San Diego Weather in April
With daytime temperatures of 21°C (70°F) and nighttime lows of 13°C (55°F), April in San Diego brings pleasant temperatures during the day. The perfect weather makes it an appealing time to visit.
Rainfall in San Diego in April
You can expect rain on around 4 days based on historical patterns, with 15 mm (0.6 in) average for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in San Diego in April
If you're visiting San Diego in April, expect perfect temperatures with highs of 21°C (70°F) and overnight lows of 13°C (55°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in San Diego in April
Enjoy a sunny month with about 280 hours of sunshine, the clear skies make San Diego even more beautiful.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 April
Min Temperature
13°C (55°F)
Max Temperature
21°C (70°F)
Chance of Rain
13%
Precipitation
15 mm (0.6 in)
Rainy days
4 days
Humidity
67%
Sunshine
280 hours
Percentage Sunshine
71%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Diego typically stay consistent throughout April, with daily highs averaging around 21°C (70°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 15°C (59°F).
Average temperatures in April
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 April
Historical weather for San Diego in April
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 April
Based on 50 years of weather observations in San Diego between 1976 and 2026, these are the recorded extremes.
- On April 20, 2009, temperatures climbed to 36°C (97°F), marking the warmest April day on record.
- San Diego experienced its chilliest April day on April 1, 1998, reaching only 13°C (55°F).
- Nighttime temperatures dropped to 5°C (41°F) on April 2, 1999, marking the coldest April night on record.
Best Places in the United States of America in April
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 April →
perfect weather
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unpleasant
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What to Wear in San Diego in April
For San Diego in April, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Almost no rain is expected, so no need to bring rain gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Diego in April
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.
