Is March a good time to visit San Diego?

Yes, March is one of the better shoulder-season months here. The coast warms to an average high around 67 degrees with lows near 54, rain is light at about 1.5 inches over roughly 6 days, and the crowds are thin until spring break hits in late March. You also get three things you cannot get most of the year at once: the tail end of gray-whale season, the Anza-Borrego desert wildflower bloom in a good year, and the clocks springing forward on March 8 for long, light evenings. Pack layers, because mornings and nights are still cool.

Is the ocean warm enough to swim in March?

Only in a wetsuit. The ocean in March sits around 58 degrees, measured off Scripps Pier in La Jolla, which is close to the coldest water of the year before it slowly warms through spring. Surfers are out in full wetsuits, and the winter swell is still firing, but this is not casual bare-skin swimming weather. March is better for walking the beach, tide pooling on a good morning, and watching the last of the winter surf than for getting in without a wetsuit.

What should I pack for San Diego in March?

Pack layers built around mild days and cool nights. Bring jeans or pants, a mix of short and long sleeves, and a warm sweater or fleece for 54-degree mornings and evenings, plus a light jacket and a packable rain shell since March still sees a few wet days. Add a t-shirt and sunglasses for the warm afternoons, since a clear March day in the mid-60s feels genuinely warm in the sun, and the UV index runs a moderate 5. Closed walking shoes beat sandals most days, and if you head to the mountains around Julian, bring a heavy coat because it can be near freezing with snow.

Can you see whales in San Diego in March?

Yes, March is the back half of gray-whale season. Pacific gray whales migrate past San Diego from December into April, and by March you are watching the northbound return, when mothers travel with newborn calves and often hug the coastline more closely on the way back to the Arctic. Sightings taper as the month goes on and wind down by April. You can watch for free from the cliffs at Cabrillo National Monument on Point Loma, which sits right on the migration route, or take a boat tour out of Point Loma or Mission Bay. The big blue whales do not arrive until summer.

San Diego Weather in March: What to Pack

Q: How warm does San Diego get in March?

At the coast, March averages a high around 66 to 67 degrees and an overnight low near 54, so it is mild and warming but not hot. Nearly every March day climbs past 60 in the afternoon, and it feels warm in direct sun. Nights and early mornings stay cool, in the low-to-mid 50s. The coast does not freeze, though the record March low at the airport is near 36 degrees, and a rare heat spell has pushed the record high close to 99. The desert around Borrego Springs runs much warmer, into the mid-70s, and the mountains around Julian and Palomar stay cold with a chance of snow.

Q: Does it rain in San Diego in March?

A little. March averages about 1.5 inches of rain over roughly 6 rainy days, which puts it near the tail of our wet season as the rain starts easing toward the dry summer. That is still a dry month by most of the country's standards, and the large majority of March days get no rain at all. The rain usually comes as a passing storm or two, then clears back to sun, rather than settling in for days. It is worth a glance at the forecast, but March rarely derails a trip.

San Diego weather in March is mild, warming, and one of the best-kept shoulder-season secrets on the calendar, so this is the trip where you pack layers and get a little bit of everything. We have lived here for 25 years, and March is the month we quietly root for visitors to book, because it hands you spring without the summer crowds or the summer prices. You get the tail of whale season, a shot at the desert super bloom, the year’s first stretch of long light evenings once the clocks jump forward, and beaches that are still yours until spring break lands late in the month. Here is what March is really like, and how a local plans around it.

The short answer: March is mild and warming. Coastal highs average about 67 degrees, lows about 54, with roughly 1.5 inches of rain over about 6 rainy days as the wet season eases off. The ocean is still cold, near 58 degrees, so it is wetsuit-only water. Days cross the 12-hour mark around the equinox, and daylight saving time springs forward on March 8, pushing sunset from about 5:52 p.m. the night before to nearly 6:52 p.m. the next evening. The upside is real: the tail of gray-whale season, the Anza-Borrego wildflower bloom in a good year, thin crowds until late-month spring break, and shoulder-season hotel rates.

How warm does San Diego get in March?

At the coast, March is mild and clearly on the way up. The average high runs about 66 to 67 degrees and the average overnight low sits near 54. Nearly every March day climbs past 60 in the afternoon and feels warm in direct sun, while mornings and nights stay cool enough that you will reach for a jacket. This is the month the weather visibly turns the corner from winter toward spring.

The coast does not freeze, but a clear, still March night early in the month can still feel cold, and the record March low at the airport is around 36 degrees. On the warm end, March has surprised people: a rare spring heat spell has pushed the record March high close to 99 degrees, though a normal clear day tops out in the mid-60s and feels warmer than the number in the sun. The takeaway is range. Plan for a cool 54-degree morning and a bright 67-degree afternoon in the same day, and you will be dressed right.

Does it rain in San Diego in March?

A little, and less than the dead of winter. March averages around 1.5 inches of rain across roughly 6 rainy days, which puts it near the back end of our wet season as the rain starts tapering toward the dry summer stretch. That still sounds like more than it feels, because it is a dry month by most of the country’s standards and the large majority of March days get no rain at all.

The rain usually arrives as a passing storm or two, then clears back to blue for a run of sunny days, rather than settling in as steady gray. That pattern is easy to plan around: keep a flexible indoor backup in your pocket for a wet afternoon and you will still bank plenty of clear ones. One thing to clear up, since people mix these up: March cloud is not the “June Gloom” marine layer that shows up in late spring and burns off to sun. March gray can mean an actual passing storm, so a quick look at the forecast pays off this month. If you are curious how strange San Diego weather gets at the cold end, our piece on whether it snows in San Diego covers the mountains, where March storms genuinely still drop snow.

Coast vs. inland vs. mountains vs. desert: the March spread

San Diego County is not one climate, and March is one of the most fun months to feel the spread, because the desert is warming into t-shirt weather while the mountains still hold snow. Daytime highs run fairly close across the coast and inland valleys; the big differences show up overnight and up in elevation.

Where you are	March average high	March average low	The reality
Immediate coast (beaches, La Jolla, Point Loma)	~67°F	~54°F	Mild, warming days; cool mornings; a few passing storms
Inland valleys (Escondido, El Cajon, Santee)	upper 60s–low 70s	mid-40s	A touch warmer by day, noticeably colder at night
Mountains (Julian, Laguna, Palomar)	mid-50s–low-60s	near freezing	Cold nights; snow still possible in March storms
Desert (Borrego Springs, Anza-Borrego)	mid-70s	upper-40s	Warmest days in the county; peak wildflower season

The practical read: March is the month the desert becomes the move for warm, dry, comfortable days, which lines up perfectly with wildflower season (more on that below). At the same time, the mountains around Julian can still see snow after a March storm, and Palomar Mountain averages several inches of snowfall in March, so the county genuinely gives you desert bloom and mountain snow in the same weekend. If a storm rolls through, give it a day and check the Julian and Laguna Mountain reports.

How cold is the ocean in March?

Cold enough that you will want a wetsuit. The water sits around 58 degrees, measured off Scripps Pier in La Jolla, which is close to the annual low before it slowly begins warming through spring. This is not casual swimming water yet. Surfers are out in full wetsuits, and you will see the occasional cold-plunge crowd, but a bare-skin swim is a quick, bracing in-and-out at best.

What March does still give you is the last of the winter surf and some of the year’s most dramatic ocean-watching. Winter’s bigger, more consistent swells run into March before they ease off, and there is no better seat than the bluffs at Sunset Cliffs, where the low sun and the winter waves put on a show. March is also a transitional month for tide pools: the best tide-pool window is fall and winter, when the lowest tides fall during daylight, and by spring those extreme low tides start shifting toward nighttime. You can still catch a good morning, so check a chart and aim for a low tide around 0.7 feet or below. Our full guide to the best tide pools in San Diego has the timing and parking, and the La Jolla tide pools post narrows it to the exact low-tide windows.

Whale watching in March

The best reason to be at the coast in March has nothing to do with swimming: it is the whales, and March is the back half of the show. Pacific gray whales migrate past San Diego from December into April, and by March you are watching the northbound return, when mothers travel with newborn calves and often hug the coastline more closely on the way back to the Arctic. That makes March a strong month for catching cow-calf pairs, even as overall sightings taper toward April.

You can watch for free from the cliffs at Cabrillo National Monument on Point Loma, which sits right on the migration route (it is a national park site with an entrance fee and afternoon closing hours, so check before you go). For a closer look, take a boat tour out of Point Loma or Mission Bay. Bring binoculars and look for the spout first, then the fluke. One thing to set expectations on: the giant blue whales people ask about are a summer species here, arriving roughly June through September, so March is a gray-whale month, not a blue-whale one. For the winter half of the season, our guides to San Diego weather in January and February cover peak gray-whale viewing, and the La Jolla leopard sharks post has the warm-season wildlife for when you come back in summer.

The Anza-Borrego super bloom: the local move for a March trip

Here is the March wildcard worth planning a day around: the desert wildflower bloom in Anza-Borrego Desert State Park, about a two-hour drive east of the coast around the town of Borrego Springs. In a good year the bloom typically peaks from late February into March, painting the desert floor with orange, yellow, purple, and white wildflowers, plus the tall red-tipped ocotillo stalks that light up the same season.

The catch, and the reason this is a local move and not a sure thing: a real “super bloom” depends on well-timed winter rain and mild temperatures, and it varies a lot year to year. Some springs are spectacular, others are quiet. So do not drive out on faith. Check the current wildflower reports from the Anza-Borrego Foundation or the park’s wildflower hotline before you go, and if the reports are good, aim for a weekday morning to beat both the heat and the Borrego Springs weekend traffic. The easy, open viewing fields along Henderson Canyon Road are the classic spot. Even in an off year, a clear March day in the desert around 75 degrees is one of the most pleasant places in the county. And if flowers are your thing regardless of the desert’s mood, the Carlsbad Flower Fields up in North County open for the season in early March with about 50 acres of ranunculus in bloom.

Sunset and daylight in March

March is when the light comes back in a big way, and it happens in one jump you should plan around. Daylight saving time begins on Sunday, March 8, 2026, when the clocks spring forward an hour at 2 a.m. Practically, that means sunset leaps from about 5:52 p.m. on Saturday the 7th to nearly 6:52 p.m. on Sunday the 8th, and evenings suddenly feel long again.

The rest of the month keeps stretching. On March 1 the sun rises around 6:14 a.m. and sets about 5:47 p.m. (before the time change), giving roughly 11.5 hours of daylight. Right around the spring equinox on March 20, day and night even out at close to 12 hours each. By March 31, sunrise is near 6:36 a.m. and sunset reaches about 7:09 p.m., for a full 12.5 hours of daylight. That later sunset is a gift for a trip: golden hour lands after dinner, and the low spring sun makes for some of the best light of the year over the water. For the month-by-month sunset times and the best places to stand, see what time the sun sets in San Diego.

What to pack for San Diego in March

Pack layers built around mild days and cool nights, because March hands you a cool morning, a warm afternoon, and a chilly evening, often in the same day. The visitor who packs only shorts is the one shivering at dinner; the one who packs only a coat is the one sweating on a bright 67-degree afternoon.

The base layers: jeans or pants, a mix of short and long sleeves, and a warm sweater or fleece. This is the daily uniform for a mild 67-degree day with a cool morning.
The jacket: a light jacket for 54-degree evenings, plus a packable rain shell. March still sees a few wet days, so the rain layer earns its spot even though it will not come out most days.
The warm-day setup: a t-shirt and sunglasses for the clear afternoons. A bright March day in the mid-60s feels warm in direct sun, and the UV index runs a moderate 5, enough to catch you on a long day out.
Shoes: closed, comfortable walking shoes for cooler and possibly wet days, not just sandals.
If you are heading to the mountains: a heavy coat, hat, and gloves. Julian and the Laguna Mountains can be near freezing and may have snow after a storm.
If you are heading to the desert: lighter clothes and sun protection for the mid-70s, plus water. The bloom fields are warm and exposed.
For the water: skip the swimsuit-only plan. If you want to get in, you need a wetsuit for the roughly 58-degree ocean.

March events worth planning around

March is a lively shoulder month, and a handful of recurring happenings are worth building a day around. Dates shift year to year, so confirm the current ones before you plan.

Anza-Borrego wildflower season

The desert bloom is the March headliner in a good year, typically peaking late February into March around Borrego Springs. Check the current wildflower reports before driving out, aim for a weekday morning, and see the open fields along Henderson Canyon Road.

Gray whale watching

March is the northbound half of gray-whale season, when cow-calf pairs pass closer to shore. Watch free from the overlook at Cabrillo National Monument on Point Loma, or book a boat tour out of Point Loma or Mission Bay. Sightings wind down toward April.

Padres baseball and spring training

The Padres wrap spring training in Peoria, Arizona through late March, and the home opener at Petco Park downtown lands in late March or early April most years, kicking off baseball season in the East Village. Check the current schedule for exact dates.

St. Patrick’s Day parade and festival

San Diego’s St. Patrick’s Day Parade and Irish Festival steps off near Balboa Park, running up Fifth Avenue with a large festival at Fifth and Laurel. It is typically held on a Saturday around March 17 and draws a big crowd; the parade is free to watch and the festival charges a small entry fee. The date moves each year, so confirm it before you go.

Carlsbad Flower Fields

Up in North County, the Carlsbad Flower Fields open for the season in early March with roughly 50 acres of ranunculus in bloom, running into May. It is a reliable spring-flower outing even in a quiet desert year, though note it is in Carlsbad, about a 35-minute drive up the coast, not the city of San Diego.

Spring break

Late March is when spring-break crowds arrive, especially at Pacific Beach, Mission Beach, and La Jolla Shores. Early March stays calm. If you want a quieter beach late in the month, our long coastline still has plenty; just skip the obvious PB and Mission Beach boardwalks on a warm weekend.

The trap to skip

The March trap is treating it like full summer. Visitors see “San Diego” and “spring” and pack for 80 degrees and warm ocean, then spend cool mornings and 58-degree surf underdressed and let down. March is mild and warming, not hot, and the water is still winter-cold. Pack layers and a wetsuit if you plan to get in, and the month rewards you.

The second trap is driving to the desert for the super bloom without checking the reports first. A bloom is never guaranteed, and nothing is worse than a two-hour drive to a brown desert. Check the Anza-Borrego wildflower updates the week you go, and have a backup plan (the Carlsbad Flower Fields, a whale-watch, a coast day) so a quiet desert year does not sink the trip.

Planning the rest of your March trip

A good March day pairs a warm-weather plan with a flexible backup for the occasional storm, and the long evenings after the clocks change give you more room to fit it all in. When the weather cooperates, chase the desert bloom, the whales, and a sunset from the cliffs; when a storm rolls through, a hotel with an indoor or heated pool is the most weather-proof way to still get in the water while the ocean sits at a cold 58 degrees. It also helps to see how March fits between its neighbors: our guides to San Diego weather in January and February cover the cooler, wetter heart of whale season, and June Gloom in San Diego explains the marine-layer gray that replaces March’s passing storms once early summer arrives. For a classic rainy-afternoon fallback in a walkable neighborhood, our guide to things to do in Little Italy has the plan.

For booking a March stay while shoulder-season rates still hold, browse the travel and lodging category in our San Diego business directory. And for whale-tour operators, desert-trip outfitters, and the rest of a spring day out, the entertainment and recreation category is a good place to start.