British Indian Ocean Territory weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in British Indian Ocean Territory in August. Check more long-term weather averages for British Indian Ocean Territory in August before you book your next holiday to British Indian Ocean Territory in 2025/2026.

  • 29°C maximum daytime temperature in August in British Indian Ocean Territory (Diego Garcia)29
    29°C max day temperature
  • 14 days with some rainfall in August in British Indian Ocean Territory (Diego Garcia)14
    14 days with some rainfall
  • 24°C minimum night-time temperature in August in British Indian Ocean Territory (Diego Garcia)24
    24°C min night temperature
  • 12 hours of daylight per day in August in British Indian Ocean Territory (Diego Garcia)12
    12 hours of daylight per day
  • Moderate heat & humidity in August in British Indian Ocean Territory (Diego Garcia)M
    Moderate heat & humidity
  • 152 mm monthly rainfall in August in British Indian Ocean Territory (Diego Garcia)152
    152 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in British Indian Ocean Territory (Diego Garcia)11
    11+ (Extreme) UV index
  • 26°C sea temperature in August in British Indian Ocean Territory (Diego Garcia)26
    26°C sea temperature

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The August 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 August?

Daytime temperatures usually reach 29°C in Diego Garcia, British Indian Ocean Territory in August with moderate heat and humidity, falling to 24°C at night.

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

The average sea temperature around Diego Garcia, British Indian Ocean Territory in August is 26°C.

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

There are usually 14 days with some rain in Diego Garcia, British Indian Ocean Territory in August and the average monthly rainfall is 152mm.

British Indian Ocean Territory August sunrise & sunset times

Browse the sunrise and sunset times for British Indian Ocean Territory in August 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
Friday, 1st August 2025 07:23 19:11
Saturday, 16th August 2025 07:18 19:11
Sunday, 31st August 2025 07:12 19:10

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