British Indian Ocean Territory weather in July 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 July. Check more long-term weather averages for British Indian Ocean Territory in July before you book your next holiday to British Indian Ocean Territory in 2025/2026.

  • 29°C maximum daytime temperature in July in British Indian Ocean Territory (Diego Garcia)29
    29°C max day temperature
  • 14 days with some rainfall in July in British Indian Ocean Territory (Diego Garcia)14
    14 days with some rainfall
  • 24°C minimum night-time temperature in July in British Indian Ocean Territory (Diego Garcia)24
    24°C min night temperature
  • 12 hours of daylight per day in July in British Indian Ocean Territory (Diego Garcia)12
    12 hours of daylight per day
  • Moderate heat & humidity in July in British Indian Ocean Territory (Diego Garcia)M
    Moderate heat & humidity
  • 143 mm monthly rainfall in July in British Indian Ocean Territory (Diego Garcia)143
    143 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in British Indian Ocean Territory (Diego Garcia)10
    10 (Very High) UV index
  • 27°C sea temperature in July in British Indian Ocean Territory (Diego Garcia)27
    27°C sea temperature

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The July 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 July?

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

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

The average sea temperature around Diego Garcia, British Indian Ocean Territory in July is 27°C.

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

There are usually 14 days with some rain in Diego Garcia, British Indian Ocean Territory in July and the average monthly rainfall is 143mm.

British Indian Ocean Territory July sunrise & sunset times

Browse the sunrise and sunset times for British Indian Ocean Territory in July 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
Tuesday, 1st July 2025 07:23 19:06
Wednesday, 16th July 2025 07:24 19:09
Thursday, 31st July 2025 07:23 19:11

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