Gizo weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Gizo in September. Check more long-term weather averages for Gizo in September before you book your next holiday to Solomon Islands in 2025/2026.

  • 31°C maximum daytime temperature in September in Gizo31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in September in Gizo19
    19 days with some rainfall
  • 23°C minimum night-time temperature in September in Gizo23
    23°C min night temperature
  • 12 hours of daylight per day in September in Gizo12
    12 hours of daylight per day
  • High heat & humidity in September in GizoH
    High heat & humidity
  • 281 mm monthly rainfall in September in Gizo281
    281 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Gizo11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Gizo28
    28°C sea temperature

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The September weather guide for Solomon Islands (Gizo) 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 Gizo in September?

Daytime temperatures usually reach 31°C in Gizo in September with high heat and humidity, falling to 23°C at night.

How sunny is it in Gizo in September?

There are normally 6 hours of bright sunshine each day in Gizo in September - that's 46% of daylight hours.

How warm is the sea around Gizo in September?

The average sea temperature around Gizo in September is 28°C.

Does it rain in Gizo in September?

There are usually 19 days with some rain in Gizo in September and the average monthly rainfall is 281mm.

Gizo September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:34 18:31
Monday, 15th September 2025 06:26 18:30
Tuesday, 30th September 2025 06:18 18:28

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