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.

  • 30°C maximum daytime temperature in September in Rennell30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in September in Rennell14
    14 days with some rainfall
  • 22°C minimum night-time temperature in September in Rennell22
    22°C min night temperature
  • 12 hours of daylight per day in September in Rennell12
    12 hours of daylight per day
  • High heat & humidity in September in RennellH
    High heat & humidity
  • 176 mm monthly rainfall in September in Rennell176
    176 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Rennell11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Rennell28
    28°C sea temperature

More about the Rennell

Rennell by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for the Solomon Islands

Holiday Autos discount code: up to 10% off global car hire

  • Save up to 10% on cheap car hire worldwide
  • Exclusive Holiday Autos discount code automatically applied
  • Travel before 31st December 2024 (inclusive)
Show discount codeShow discount code ******vel
Redeem Holiday Autos discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Holiday Autos offers

Holiday AutosCar hire finder

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)

Back to top

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

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^