Guyana weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Guyana in September. Check more long-term weather averages for Guyana in September before you book your next holiday to Guyana in 2025/2026.

  • 31°C maximum daytime temperature in September in Guyana (Georgetown)31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 13 days with some rainfall in September in Guyana (Georgetown)13
    13 days with some rainfall
  • 24°C minimum night-time temperature in September in Guyana (Georgetown)24
    24°C min night temperature
  • 12 hours of daylight per day in September in Guyana (Georgetown)12
    12 hours of daylight per day
  • Very high heat & humidity in September in Guyana (Georgetown)VH
    Very High heat & humidity
  • 74 mm monthly rainfall in September in Guyana (Georgetown)74
    74 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Guyana (Georgetown)11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Guyana (Georgetown)29
    29°C sea temperature

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The September weather guide for Guyana (Georgetown) 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.

Top Guyana destinations

Below are average maximum temperatures at popular countries, regions and places in Guyana in September. Select a holiday destination to see more weather parameters.

All Guyana destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Guyana in September?

Daytime temperatures usually reach 31°C in Georgetown, Guyana in September with very high heat and humidity, falling to 24°C at night.

How sunny is it in Guyana in September?

There are normally 8 hours of bright sunshine each day in Georgetown, Guyana in September - that's 64% of daylight hours.

How warm is the sea around Guyana in September?

The average sea temperature around Georgetown, Guyana in September is 29°C.

Does it rain in Guyana in September?

There are usually 13 days with some rain in Georgetown, Guyana in September and the average monthly rainfall is 74mm.

Guyana September sunrise & sunset times

Browse the sunrise and sunset times for Guyana in September 2025. Select a month to view Guyana sunrise and sunset times for the next 12 months. The Guyana sunrise and sunset times shown below are for Georgetown.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:45 18:00
Monday, 15th September 2025 05:43 17:52
Tuesday, 30th September 2025 05:41 17:44

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