San Jose weather in August 2025

Expect 24°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in San Jose in August. Check more long-term weather averages for San Jose in August before you book your next holiday to Costa Rica in 2025/2026.

  • 24°C maximum daytime temperature in August in San Jose24
    24°C max day temperature
  • 6 hours of sunshine per day
  • 24 days with some rainfall in August in San Jose24
    24 days with some rainfall
  • 17°C minimum night-time temperature in August in San Jose17
    17°C min night temperature
  • 12 hours of daylight per day in August in San Jose12
    12 hours of daylight per day
  • Low heat & humidity in August in San JoseL
    Low heat & humidity
  • 282 mm monthly rainfall in August in San Jose282
    282 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in San Jose11
    11+ (Extreme) UV index

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The August weather guide for Costa Rica (San Jose) 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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How hot is it in San Jose in August?

Daytime temperatures usually reach 24°C in San Jose in August, falling to 17°C at night.

How sunny is it in San Jose in August?

There are normally 6 hours of bright sunshine each day in San Jose in August - that's 50% of daylight hours.

Does it rain in San Jose in August?

There are usually 24 days with some rain in San Jose in August and the average monthly rainfall is 282mm.

San Jose August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:26 17:59
Saturday, 16th August 2025 05:27 17:54
Sunday, 31st August 2025 05:27 17:46

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