Tamarindo weather in September 2026

Expect daytime maximum temperatures of 30°C in Tamarindo, Costa Rica in September and very high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 23 days with some rainfall and typically 356 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Tamarindo30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 23 days with some rainfall in September in Tamarindo23
    23 days with some rainfall
  • 23°C minimum night-time temperature in September in Tamarindo23
    23°C 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
  • 356 mm monthly rainfall in September in Tamarindo356
    356 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Tamarindo11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Tamarindo28
    28°C 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Tamarindo in September?

Daytime temperatures usually reach 24°C in Tamarindo in September, falling to 17°C at night.

How sunny is it in Tamarindo in September?

There are normally 6 hours of bright sunshine each day in Tamarindo in September - that's 49% of daylight hours.

Does it rain in Tamarindo in September?

There are usually 24 days with some rain in Tamarindo in September and the average monthly rainfall is 372mm.

Tamarindo September sunrise & sunset times

Browse the sunrise and sunset times for Tamarindo in September 2026. Select a month to view Tamarindo sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:34 17:52
Tuesday, 15th September 2026 05:33 17:44
Wednesday, 30th September 2026 05:32 17:34

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