British Indian Ocean Territory weather live forecast

Today's maximum temperature in the British Indian Ocean Territory is expected to be 81°F. Select a day from the live weather forecast for the British Indian Ocean Territory (Diego Garcia) for more weather parameters.

5-day weather forecast updated at 04:03 on Thursday 18th September 2025 GMT

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The 5-day weather forecast for British Indian Ocean Territory, represented by Diego Garcia, (Diego Garcia) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

British Indian Ocean Territory weather forecast by day

Below are the detailed weather forecasts for the British Indian Ocean Territory for the next 5 days. The forecasts shown are for Diego Garcia and may not represent the whole of the British Indian Ocean Territory. Browse more destinations in British Indian Ocean Territory to view more weather forecasts.

British Indian Ocean Territory weather for Thursday 18th September 2025

Expect isolated thunderstorms in British Indian Ocean Territory with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 10 mph from the east.

  • 81°F maximum temperature81
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 72% chance of some rain72
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 10 mph from the East10
    mph wind from E

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British Indian Ocean Territory weather for Friday 19th September 2025

Expect isolated thunderstorms in British Indian Ocean Territory with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 20-30 mm of rainfall expected with 77% chance of some rain and a gentle breeze of 11 mph from the east.

  • 81°F maximum temperature81
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 77% chance of some rain77
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 11 mph from the East11
    mph wind from E

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British Indian Ocean Territory weather for Saturday 20th September 2025

Expect isolated thunderstorms in British Indian Ocean Territory with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a gentle breeze of 11 mph from the east.

  • 82°F maximum temperature82
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 86% chance of some rain86
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 11 mph from the East11
    mph wind from E

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British Indian Ocean Territory weather for Sunday 21st September 2025

Expect isolated thunderstorms in British Indian Ocean Territory with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 20-30 mm of rainfall expected with 85% chance of some rain and a gentle breeze of 9 mph from the east.

  • 82°F maximum temperature82
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 85% chance of some rain85
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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British Indian Ocean Territory weather for Monday 22nd September 2025

Expect isolated thunderstorms in British Indian Ocean Territory with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 87% chance of some rain and a light breeze of 7 mph from the south-east.

  • 82°F maximum temperature82
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 87% chance of some rain87
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 7 mph from the South-East7
    mph wind from SE

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Metric (°C)  |  Imperial (°F)

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