Dominical weather in September 2026

Expect daytime maximum temperatures of 84°F in Dominical, Costa Rica in September and 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 18.5 inches of rainfall in the month.

  • 84°F maximum daytime temperature in September in Dominical84
    84°F max day temperature
  • 5 hours of sunshine per day
  • 22 days with some rainfall in September in Dominical22
    22 days with some rainfall
  • 72°F minimum night-time temperature in September in Dominical72
    72°F min night temperature
  • 12 hours of daylight per day in September in Dominical12
    12 hours of daylight per day
  • High heat & humidity in September in DominicalH
    High heat & humidity
  • 18.5 inches monthly rainfall in September in Dominical18.5
    18.5 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Dominical11
    11+ (Extreme) UV index
  • 82°F sea temperature in September in Dominical82
    82°F sea temperature

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

Daytime temperatures usually reach 75°F in Dominical in September, falling to 63°F at night.

How sunny is it in Dominical in September?

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

Does it rain in Dominical in September?

There are usually 24 days with some rain in Dominical in September and the average monthly rainfall is 14.6 inches.

Dominical September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:27 17:44
Tuesday, 15th September 2026 05:25 17:36
Wednesday, 30th September 2026 05:24 17:27

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