Diego Garcia weather

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

The weather guide for Diego Garcia, British Indian Ocean Territory shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Diego Garcia?

The hottest time of year in Diego Garcia is normally April. Expect maximum daytime temperatures to reach 31°C with very high heat and humidity.

Which month has the most rain in Diego Garcia?

In terms of rainfall, January is usually the wettest month in Diego Garcia with 291mm on average. There are normally 16 days in January with some rain.

When is the sea warmest in Diego Garcia?

The sea is usually at its warmest in Diego Garcia in April when the water temperature reaches 29°C.

Metric (°C / mm)  |  Imperial (°F / inches)

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Compare Diego Garcia weather with the USA

Below the Diego Garcia weather chart shows average maximum daytime temperature for Diego Garcia, British Indian Ocean Territory and the USA (Washington).

Maximum daytime temperature (°C)

Diego Garcia, British Indian Ocean Territory
USA (Washington)
30
5
31
7
31
13
31
19
30
24
29
29
29
31
29
30
29
26
29
20
30
14
30
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: Diego Garcia, British Indian Ocean Territory cyclone season

% of month affected by tropical storms
1.3%
0
0
0
0
0
0
0
<1%
1.5%
2.1%
1.5%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Diego Garcia, British Indian Ocean Territory tropical storm risk chart above shows the cyclone season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

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