San Diego Weather in March
Thinking of visiting San Diego in March? Expect pleasant temperatures reaching 20°C (68°F) during the day, dropping to 11°C (52°F) at night, with some rainfall likely.
Rainfall in San Diego in March
You can expect rain on around 5 days based on historical patterns, with 27 mm (1.1 in) average for the month. Rain days are few and the total is low, so this is a largely dry month. Any showers that do occur tend to be brief.
Temperature in San Diego in March
If you're visiting San Diego in March, expect perfect temperatures with highs of 20°C (68°F) and overnight lows of 11°C (52°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 11°C (52°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in San Diego in March
Expect a lot of sunshine this month, with about 261 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, June, July, August, September, October and November typically offer the best weather for San Diego.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Diego's climate page.
San Diego Temperature in March
Min Temperature
11°C (52°F)
Max Temperature
20°C (68°F)
Chance of Rain
17%
Precipitation
27 mm (1.1 in)
Rainy days
5 days
Humidity
67%
Sunshine
261 hours
Percentage Sunshine
70%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Diego typically stay consistent throughout March, with daily highs averaging around 20°C (68°F). Nights are cool, with lows around 12°C (54°F).
Average temperatures in March
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in March
Historical weather for San Diego in March
Browse day-by-day weather records for San Diego spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Diego historical weather extremes in March
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in San Diego.
- On March 26, 1988, temperatures climbed to 34°C (93°F), marking the warmest March day on record.
- San Diego experienced its chilliest March day on March 29, 1998, reaching only 12°C (54°F).
- Nighttime temperatures dropped to 5°C (41°F) on March 2, 2023, marking the coldest March night on record.
Best Places in the United States of America in March
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in March →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in San Diego in March
Comfortable temperatures call for an easy wardrobe in March. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Diego in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Diego's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Diego climate overview or explore weather in the United States of America.
