British Indian Ocean Territory weather in January 2025

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Expect 86°F 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.

86
86°F max day temperature
16
16 days with some rainfall
77
77°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
11.5
11.5 inches of monthly rainfall
11
11+ (Extreme) UV index
84
84°F 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) | Imperial (°F)

How hot is it in the British Indian Ocean Territory in January?

Daytime temperatures usually reach 86°F in Diego Garcia, British Indian Ocean Territory in January with high heat and humidity, falling to 77°F 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 84°F.

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 11.5 inches.

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.

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

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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British Indian Ocean Territory - quick facts
Time difference	UK +6 hours
Language(s)	English
Currency	Pound Sterling, US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Tourist info	British Indian Ocean Territory Administration