San Diego weather in April 2025

Expect 21°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in San Diego in April. Check more long-term weather averages for San Diego in April before you book your next holiday to California in 2025/2026.

  • 21°C maximum daytime temperature in April in San Diego21
    21°C max day temperature
  • 9 hours of sunshine per day
  • 4 days with some rainfall in April in San Diego4
    4 days with some rainfall
  • 11°C minimum night-time temperature in April in San Diego11
    11°C min night temperature
  • 13 hours of daylight per day in April in San Diego13
    13 hours of daylight per day
  • No heat & humidity in April in San Diego0
    No heat & humidity
  • 23 mm monthly rainfall in April in San Diego23
    23 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in April in San Diego8
    8 (Very High) UV index
  • 16°C sea temperature in April in San Diego16
    16°C sea temperature

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The April weather guide for California (San Diego) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about California

How hot is it in San Diego in April?

Daytime temperatures usually reach 21°C in San Diego in April, falling to 11°C at night.

How sunny is it in San Diego in April?

There are normally 9 hours of bright sunshine each day in San Diego in April - that's 72% of daylight hours.

How warm is the sea around San Diego in April?

The average sea temperature around San Diego in April is 16°C.

Does it rain in San Diego in April?

There are usually 4 days with some rain in San Diego in April and the average monthly rainfall is 23mm.

San Diego April sunrise & sunset times

Browse the sunrise and sunset times for San Diego in April 2025. Select a month to view San Diego sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st April 2025 05:36 18:09
Tuesday, 15th April 2025 05:19 18:19
Wednesday, 30th April 2025 05:02 18:30

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