Which is the hottest month in the British Indian Ocean Territory?

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

Best time to visit the British Indian Ocean Territory

Q: When is the best time to visit the British Indian Ocean Territory?

The best time to visit the British Indian Ocean Territory (Diego Garcia) is June, July, August, September and October based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in the British Indian Ocean Territory?

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

Q: When is the sea warmest in the British Indian Ocean Territory?

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

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When is the best time to visit British Indian Ocean Territory?

The best time to visit British Indian Ocean Territory (Diego Garcia) is June, July, August, September and October based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

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Jan
1.5
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Mar
1.5
Apr
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May
2.5
Jun
2.5
Jul
2.5
Aug
2.5
Sep
2.5
Oct
2
Nov
2
Dec

Change criteria

Max Day Temperature (°C)

30
Jan
31
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Mar
31
Apr
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May
29
Jun
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Jul
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Aug
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Sep
29
Oct
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Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The 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) & today's weather forecast provided by meteoblue. Find out more about our data sources.

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

More about the British Indian Ocean Territory

Explore our complete guide to the British Indian Ocean Territory with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for the British Indian Ocean Territory.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

British Indian Ocean Territory travel guide - essential info

Below is a beginner's guide to the British Indian Ocean Territory with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

British Indian Ocean Territory - quick facts
Time difference	UK +6 hours
Language(s)	English
Currency	Pound Sterling, US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes

British Indian Ocean Territory tourist information

British Indian Ocean Territory Admin

✝ = requirements for UK travellers.

British Indian Ocean Territory travel guidance

Check the latest travel guidance and advice on visiting the British Indian Ocean Territory from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for the British Indian Ocean Territory - UK FCDO

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around the British Indian Ocean Territory.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

British Indian Ocean Territory travel health

Find out more about staying safe when travelling to the British Indian Ocean Territory with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for the British Indian Ocean Territory - CDC

Check out the general travel tips for staying safe and healthy in the British Indian Ocean Territory, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

British Indian Ocean Territory travel features

Do you want to learn more about the British Indian Ocean Territory? Read our latest features covering travel tips and insider destination guides on where to go and what to do in the British Indian Ocean Territory.

We don't currently have any travel features on the British Indian Ocean Territory. Discover more about holiday destinations around the world with this selection of general travel articles.

British Indian Ocean Territory FAQs

Read our frequently asked questions about travelling to the British Indian Ocean Territory including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in the British Indian Ocean Territory?

In terms of rainfall, January is usually the wettest month in Diego Garcia, British Indian Ocean Territory with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in the British Indian Ocean Territory?

The sunniest time of year in Diego Garcia, British Indian Ocean Territory is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in the British Indian Ocean Territory?

The sea is usually at its warmest in Diego Garcia, British Indian Ocean Territory in January when the water temperature reaches 0°C.

What is the time difference between the British Indian Ocean Territory and the UK?

The time difference between the British Indian Ocean Territory and the UK is UK time+6 hours.

What is the main language spoken in the British Indian Ocean Territory?

The main language spoken in the British Indian Ocean Territory is English.

Learn a language for the British Indian Ocean Territory with Rosetta Stone^*, Busuu^* and Rocket Languages^*.

What is the currency in the British Indian Ocean Territory?

The currency in the British Indian Ocean Territory is the Pound Sterling (GBP) and the US Dollar (USD).

Which plugs are used in the British Indian Ocean Territory?

British Indian Ocean Territory uses electrical plug type A + B (120 Volts).

Which side of the road do they drive on in the British Indian Ocean Territory?

They drive on the right side of the road in the British Indian Ocean Territory.

Do you need a visa for the British Indian Ocean Territory?

Yes, UK passport holders do need a visa to enter the British Indian Ocean Territory.

British Indian Ocean Territory travel deals

Holidays to the British Indian Ocean Territory

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