Tamarindo weather in September 2025

Expect 86°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Tamarindo in September. Check more long-term weather averages for Tamarindo in September before you book your next holiday to Costa Rica in 2025/2026.

  • 86°F maximum daytime temperature in September in Tamarindo86
    86°F max day temperature
  • 5 hours of sunshine per day
  • 23 days with some rainfall in September in Tamarindo23
    23 days with some rainfall
  • 73°F minimum night-time temperature in September in Tamarindo73
    73°F min night temperature
  • 12 hours of daylight per day in September in Tamarindo12
    12 hours of daylight per day
  • Very high heat & humidity in September in TamarindoVH
    Very High heat & humidity
  • 14.0 inches monthly rainfall in September in Tamarindo14.0
    14.0 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Tamarindo11
    11+ (Extreme) UV index
  • 82°F sea temperature in September in Tamarindo82
    82°F sea temperature

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The September weather guide for Costa Rica (Tamarindo) 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)  |  Imperial (°F)

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How hot is it in Tamarindo in September?

Daytime temperatures usually reach 86°F in Tamarindo in September with very high heat and humidity, falling to 73°F at night.

How sunny is it in Tamarindo in September?

There are normally 5 hours of bright sunshine each day in Tamarindo in September - that's 42% of daylight hours.

How warm is the sea around Tamarindo in September?

The average sea temperature around Tamarindo in September is 82°F.

Does it rain in Tamarindo in September?

There are usually 23 days with some rain in Tamarindo in September and the average monthly rainfall is 14.0 inches.

Tamarindo September sunrise & sunset times

Browse the sunrise and sunset times for Tamarindo in September 2025. Select a month to view Tamarindo sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:34 17:52
Monday, 15th September 2025 05:33 17:44
Tuesday, 30th September 2025 05:32 17:34

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