Quepos weather in September 2025

Expect daytime maximum temperatures of 84°F in Quepos, 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 22 days with some rainfall and typically 20.4 inches of rainfall in the month.

  • 84°F maximum daytime temperature in September in Quepos84
    84°F max day temperature
  • 5 hours of sunshine per day
  • 22 days with some rainfall in September in Quepos22
    22 days with some rainfall
  • 72°F minimum night-time temperature in September in Quepos72
    72°F min night temperature
  • 12 hours of daylight per day in September in Quepos12
    12 hours of daylight per day
  • Very high heat & humidity in September in QueposVH
    Very High heat & humidity
  • 20.4 inches monthly rainfall in September in Quepos20.4
    20.4 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Quepos11
    11+ (Extreme) UV index
  • 82°F sea temperature in September in Quepos82
    82°F sea temperature

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The September weather guide for Costa Rica (Quepos) 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 Quepos in September?

Daytime temperatures usually reach 84°F in Quepos in September with very high heat and humidity, falling to 72°F at night.

How sunny is it in Quepos in September?

There are normally 5 hours of bright sunshine each day in Quepos in September - that's 44% of daylight hours.

How warm is the sea around Quepos in September?

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

Does it rain in Quepos in September?

There are usually 22 days with some rain in Quepos in September and the average monthly rainfall is 20.4 inches.

Quepos September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:28 17:45
Monday, 15th September 2025 05:26 17:37
Tuesday, 30th September 2025 05:25 17:28

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