Fernando de Noronha weather in September 2025

Expect 29°C daytime maximum temperatures in the shade in Fernando de Noronha in September based on long-term weather averages. There is usually 16 days with some rainfall and 30 mm of average monthly rainfall in September.

  • 29°C maximum daytime temperature in September in Fernando de Noronha29
    29°C max day temperature
  • 16 days with some rainfall in September in Fernando de Noronha16
    16 days with some rainfall
  • 23°C minimum night-time temperature in September in Fernando de Noronha23
    23°C min night temperature
  • 12 hours of daylight per day in September in Fernando de Noronha12
    12 hours of daylight per day
  • High heat & humidity in September in Fernando de NoronhaH
    High heat & humidity
  • 30 mm monthly rainfall in September in Fernando de Noronha30
    30 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Fernando de Noronha11
    11+ (Extreme) UV index
  • 26°C sea temperature in September in Fernando de Noronha26
    26°C sea temperature

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Fernando de Noronha by month

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The September weather guide for Brazil (Fernando de Noronha) 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 Fernando de Noronha in September?

Daytime temperatures usually reach 29°C in Fernando de Noronha in September with high heat and humidity, falling to 23°C at night.

How warm is the sea around Fernando de Noronha in September?

The average sea temperature around Fernando de Noronha in September is 26°C.

Does it rain in Fernando de Noronha in September?

There are usually 16 days with some rain in Fernando de Noronha in September and the average monthly rainfall is 30mm.

Fernando de Noronha September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:08 18:11
Monday, 15th September 2025 06:02 18:07
Tuesday, 30th September 2025 05:55 18:04

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