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British Indian Ocean Territory weather by month
Check out the British Indian Ocean Territory weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in British Indian Ocean Territory (°C)
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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Min temperature (night-time) | ![]() |
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Heat & Humidity | ![]() |
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Sea temperature | ![]() |
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Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in British Indian Ocean Territory
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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UV Index (Maximum) | ![]() |
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Rainfall in British Indian Ocean Territory
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
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Average monthly rainfall (mm) | ![]() |
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More about the British Indian Ocean Territory
British Indian Ocean Territory by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for the British Indian Ocean Territory
The climate guide for British Indian Ocean Territory, represented by Diego Garcia, (Diego Garcia) shows long term monthly 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.
British Indian Ocean Territory weather in January
Expect daytime maximum temperatures of 30°C in British Indian Ocean Territory in January and high heat and humidity based on long-term weather averages. There are 16 days with some rainfall and typically 291 mm of rainfall in the month.
- 30°C max day temperature
30
- 16 days with some rainfall
16
- 25°C min night temperature
25
- 12 hours of daylight per day
12
- High heat & humidity
H
- 291 mm of monthly rainfall
291
- 11+ (Extreme) UV index
11
- 29°C sea temperature
29
British Indian Ocean Territory weather in February
Expect daytime maximum temperatures of 31°C in British Indian Ocean Territory in February and high heat and humidity based on long-term weather averages. There are 14 days with some rainfall and typically 248 mm of rainfall in the month.
- 31°C max day temperature
31
- 14 days with some rainfall
14
- 25°C min night temperature
25
- 12 hours of daylight per day
12
- High heat & humidity
H
- 248 mm of monthly rainfall
248
- 11+ (Extreme) UV index
11
- 28°C sea temperature
28
British Indian Ocean Territory weather in March
Expect daytime maximum temperatures of 31°C in British Indian Ocean Territory in March and very high heat and humidity based on long-term weather averages. There are 15 days with some rainfall and typically 195 mm of rainfall in the month.
- 31°C max day temperature
31
- 15 days with some rainfall
15
- 26°C min night temperature
26
- 12 hours of daylight per day
12
- Very High heat & humidity
VH
- 195 mm of monthly rainfall
195
- 11+ (Extreme) UV index
11
- 29°C sea temperature
29
British Indian Ocean Territory weather in April
Expect daytime maximum temperatures of 31°C in British Indian Ocean Territory in April and very high heat and humidity based on long-term weather averages. There are 15 days with some rainfall and typically 171 mm of rainfall in the month.
- 31°C max day temperature
31
- 15 days with some rainfall
15
- 26°C min night temperature
26
- 12 hours of daylight per day
12
- Very High heat & humidity
VH
- 171 mm of monthly rainfall
171
- 11+ (Extreme) UV index
11
- 29°C sea temperature
29
British Indian Ocean Territory weather in May
Expect daytime maximum temperatures of 30°C in British Indian Ocean Territory in May and high heat and humidity based on long-term weather averages. There are 16 days with some rainfall and typically 164 mm of rainfall in the month.
- 30°C max day temperature
30
- 16 days with some rainfall
16
- 25°C min night temperature
25
- 12 hours of daylight per day
12
- High heat & humidity
H
- 164 mm of monthly rainfall
164
- 11 (Extreme) UV index
11
- 28°C sea temperature
28
British Indian Ocean Territory weather in June
Expect daytime maximum temperatures of 29°C in British Indian Ocean Territory in June and high heat and humidity based on long-term weather averages. There are 14 days with some rainfall and typically 138 mm of rainfall in the month.
- 29°C max day temperature
29
- 14 days with some rainfall
14
- 25°C min night temperature
25
- 12 hours of daylight per day
12
- High heat & humidity
H
- 138 mm of monthly rainfall
138
- 10 (Very High) UV index
10
- 27°C sea temperature
27
British Indian Ocean Territory weather in July
Expect daytime maximum temperatures of 29°C in British Indian Ocean Territory in July based on long-term weather averages. There are 14 days with some rainfall and typically 143 mm of rainfall in the month.
- 29°C max day temperature
29
- 14 days with some rainfall
14
- 24°C min night temperature
24
- 12 hours of daylight per day
12
- Moderate heat & humidity
M
- 143 mm of monthly rainfall
143
- 10 (Very High) UV index
10
- 27°C sea temperature
27
British Indian Ocean Territory weather in August
Expect daytime maximum temperatures of 29°C in British Indian Ocean Territory in August based on long-term weather averages. There are 14 days with some rainfall and typically 152 mm of rainfall in the month.
- 29°C max day temperature
29
- 14 days with some rainfall
14
- 24°C min night temperature
24
- 12 hours of daylight per day
12
- Moderate heat & humidity
M
- 152 mm of monthly rainfall
152
- 11+ (Extreme) UV index
11
- 26°C sea temperature
26
British Indian Ocean Territory weather in September
Expect daytime maximum temperatures of 29°C in British Indian Ocean Territory in September and high heat and humidity based on long-term weather averages. There are 16 days with some rainfall and typically 228 mm of rainfall in the month.
- 29°C max day temperature
29
- 16 days with some rainfall
16
- 24°C min night temperature
24
- 12 hours of daylight per day
12
- High heat & humidity
H
- 228 mm of monthly rainfall
228
- 11+ (Extreme) UV index
11
- 27°C sea temperature
27
British Indian Ocean Territory weather in October
Expect daytime maximum temperatures of 29°C in British Indian Ocean Territory in October and high heat and humidity based on long-term weather averages. There are 18 days with some rainfall and typically 245 mm of rainfall in the month.
- 29°C max day temperature
29
- 18 days with some rainfall
18
- 25°C min night temperature
25
- 12 hours of daylight per day
12
- High heat & humidity
H
- 245 mm of monthly rainfall
245
- 11+ (Extreme) UV index
11
- 28°C sea temperature
28
British Indian Ocean Territory weather in November
Expect daytime maximum temperatures of 30°C in British Indian Ocean Territory in November and high heat and humidity based on long-term weather averages. There are 17 days with some rainfall and typically 201 mm of rainfall in the month.
- 30°C max day temperature
30
- 17 days with some rainfall
17
- 25°C min night temperature
25
- 12 hours of daylight per day
12
- High heat & humidity
H
- 201 mm of monthly rainfall
201
- 11+ (Extreme) UV index
11
- 28°C sea temperature
28
British Indian Ocean Territory weather in December
Expect daytime maximum temperatures of 30°C in British Indian Ocean Territory in December and high heat and humidity based on long-term weather averages. There are 17 days with some rainfall and typically 254 mm of rainfall in the month.
- 30°C max day temperature
30
- 17 days with some rainfall
17
- 25°C min night temperature
25
- 13 hours of daylight per day
13
- High heat & humidity
H
- 254 mm of monthly rainfall
254
- 11+ (Extreme) UV index
11
- 29°C sea temperature
29
More about the British Indian Ocean Territory
British Indian Ocean Territory by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for the British Indian Ocean Territory
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The climate guide for British Indian Ocean Territory, represented by Diego Garcia, (Diego Garcia) shows long term monthly 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)
Tropical storm risk: British Indian Ocean Territory cyclone season
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Compare British Indian Ocean Territory with the UK
Below the British Indian Ocean Territory chart shows average maximum daytime temperature for British Indian Ocean Territory (Diego Garcia) and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
Compare more British Indian Ocean Territory weather >>
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