San Diego weather in July 2025

Expect 26°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in San Diego in July. Check more long-term weather averages for San Diego in July before you book your next holiday to California in 2025/2026.

  • 26°C maximum daytime temperature in July in San Diego26
    26°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in July in San Diego1
    1 day with some rainfall
  • 17°C minimum night-time temperature in July in San Diego17
    17°C min night temperature
  • 14 hours of daylight per day in July in San Diego14
    14 hours of daylight per day
  • Low heat & humidity in July in San DiegoL
    Low heat & humidity
  • 1 mm monthly rainfall in July in San Diego1
    1 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in San Diego10
    10 (Very High) UV index
  • 20°C sea temperature in July in San Diego20
    20°C sea temperature

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The July 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 July?

Daytime temperatures usually reach 26°C in San Diego in July with low heat and humidity, falling to 17°C at night.

How sunny is it in San Diego in July?

There are normally 10 hours of bright sunshine each day in San Diego in July - that's 72% of daylight hours.

How warm is the sea around San Diego in July?

The average sea temperature around San Diego in July is 20°C.

Does it ever rain in San Diego in July?

There is usually 1 day with some rain in San Diego in July and the average monthly rainfall is 1mm.

San Diego July sunrise & sunset times

Browse the sunrise and sunset times for San Diego in July 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 July 2025 04:45 19:01
Wednesday, 16th July 2025 04:53 18:57
Thursday, 31st July 2025 05:02 18:47

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