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Rennell weather in September 2025
Expect 30°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Rennell in September. Check more long-term weather averages for Rennell in September before you book your next holiday to Solomon Islands in 2025/2026.
- 3030°C max day temperature
- 6 hours of sunshine per day
- 1414 days with some rainfall
- 2222°C min night temperature
- 1212 hours of daylight per day
- HHigh heat & humidity
- 176176 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2828°C sea temperature
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Recommended for the Solomon Islands
The September weather guide for Solomon Islands (Rennell) 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)
How hot is it in Rennell in September?
Daytime temperatures usually reach 30°C in Rennell in September with high heat and humidity, falling to 22°C at night.
How sunny is it in Rennell in September?
There are normally 6 hours of bright sunshine each day in Rennell in September - that's 53% of daylight hours.
How warm is the sea around Rennell in September?
The average sea temperature around Rennell in September is 28°C.
Does it rain in Rennell in September?
There are usually 14 days with some rain in Rennell in September and the average monthly rainfall is 176mm.
Rennell September sunrise & sunset times
Browse the sunrise and sunset times for Rennell in September 2025. Select a month to view Rennell sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 06:23 | 18:16 |
Monday, 15th September 2025 | 06:14 | 18:16 |
Tuesday, 30th September 2025 | 06:04 | 18:15 |
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