Rota weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Rota in September. Check more long-term weather averages for Rota in September before you book your next holiday to Northern Mariana Islands in 2025/2026.

  • 31°C maximum daytime temperature in September in Rota31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in September in Rota20
    20 days with some rainfall
  • 25°C minimum night-time temperature in September in Rota25
    25°C min night temperature
  • 12 hours of daylight per day in September in Rota12
    12 hours of daylight per day
  • High heat & humidity in September in RotaH
    High heat & humidity
  • 345 mm monthly rainfall in September in Rota345
    345 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Rota11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Rota29
    29°C sea temperature

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The September weather guide for Northern Mariana Islands (Rota) 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 Rota in September?

Daytime temperatures usually reach 31°C in Rota in September with high heat and humidity, falling to 25°C at night.

How sunny is it in Rota in September?

There are normally 5 hours of bright sunshine each day in Rota in September - that's 38% of daylight hours.

How warm is the sea around Rota in September?

The average sea temperature around Rota in September is 29°C.

Does it rain in Rota in September?

There are usually 20 days with some rain in Rota in September and the average monthly rainfall is 345mm.

What is the chance of a typhoon in Rota in September?

On average 2.3 days in September in Rota are likely to be affected by the passage of one or more tropical storms.

Rota September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:07 18:31
Monday, 15th September 2025 06:08 18:21
Tuesday, 30th September 2025 06:09 18:10

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