San Diego weather in March
“Mild and bright — an underrated time to visit.”
Roughly 8 rainy days across the month, on average.
In march, San Diego settles into its kind, mild rhythm. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 19°C (66°F), cooling to 11°C after sunset. Rainfall is moderate — around 8 rainy days spread through the month. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for San Diego in March
- •A light layer for cool mornings and evenings
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for San Diego in March
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- →Compact travel umbrellaAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
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Where to stay in San Diego
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in San Diego across trusted platforms.
Compare hotels on Booking.com→March vs. the rest of the year
How this month compares in San Diego. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit San Diego
While March has its own character in San Diego, the data-backed best months to visit San Diego are April, June, July, August. These months combine the most favourable temperatures, rainfall, and sunshine across a ten-year climate record.
See the full best-time-to-visit guide for San DiegoOther places with a similar climate right now
San Diego in March — FAQ
Q01Is March a good time to visit San Diego?
Is March a good time to visit San Diego?
Yes — it is a good time to visit, with pleasant, comfortable weather. In March, San Diego averages a high of 19°C (66°F) and a low of 11°C (52°F), with 55mm of rainfall across roughly 8 rainy days.
Q02What is the average temperature in San Diego in March?
What is the average temperature in San Diego in March?
The average high temperature in San Diego during March is 19°C (66°F), with an average low of 11°C (52°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does San Diego have in March?
How many rainy days does San Diego have in March?
San Diego averages approximately 8 rainy days in March, with a total monthly rainfall of about 55mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for San Diego in March?
What should I pack for San Diego in March?
For San Diego in March, pack layered clothing for changing temperatures, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is San Diego in March?
How crowded is San Diego in March?
Tourist crowds in San Diego during March are typically moderate. Consider this when planning accommodation — prices track crowd levels closely.