British Indian Ocean Territory weather in January 2025

Expect 30°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in British Indian Ocean Territory in January. Check more long-term weather averages for British Indian Ocean Territory in January before you book your next holiday to British Indian Ocean Territory in 2025/2026.

  • 30°C maximum daytime temperature in January in British Indian Ocean Territory (Diego Garcia)30
    30°C max day temperature
  • 16 days with some rainfall in January in British Indian Ocean Territory (Diego Garcia)16
    16 days with some rainfall
  • 25°C minimum night-time temperature in January in British Indian Ocean Territory (Diego Garcia)25
    25°C min night temperature
  • 12 hours of daylight per day in January in British Indian Ocean Territory (Diego Garcia)12
    12 hours of daylight per day
  • High heat & humidity in January in British Indian Ocean Territory (Diego Garcia)H
    High heat & humidity
  • 291 mm monthly rainfall in January in British Indian Ocean Territory (Diego Garcia)291
    291 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in British Indian Ocean Territory (Diego Garcia)11
    11+ (Extreme) UV index
  • 29°C sea temperature in January in British Indian Ocean Territory (Diego Garcia)29
    29°C sea temperature

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The January weather guide for British Indian Ocean Territory, represented by Diego Garcia, (Diego Garcia) 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 the British Indian Ocean Territory in January?

Daytime temperatures usually reach 30°C in Diego Garcia, British Indian Ocean Territory in January with high heat and humidity, falling to 25°C at night.

How warm is the sea around the British Indian Ocean Territory in January?

The average sea temperature around Diego Garcia, British Indian Ocean Territory in January is 29°C.

Does it rain in the British Indian Ocean Territory in January?

There are usually 16 days with some rain in Diego Garcia, British Indian Ocean Territory in January and the average monthly rainfall is 291mm.

What is the chance of a cyclone in the British Indian Ocean Territory in January?

On average less than 1 day in January in Diego Garcia, British Indian Ocean Territory is likely to be affected by the passage of one or more tropical storms.

British Indian Ocean Territory January sunrise & sunset times

Browse the sunrise and sunset times for British Indian Ocean Territory in January 2025. Select a month to view British Indian Ocean Territory sunrise and sunset times for the next 12 months. The British Indian Ocean Territory sunrise and sunset times shown below are for Diego Garcia.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 06:58 19:30
Thursday, 16th January 2025 07:05 19:35
Friday, 31st January 2025 07:11 19:37

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