British Indian Ocean Territory weather in June 2025

Q: How hot is it in the British Indian Ocean Territory in June?

Daytime temperatures usually reach 29°C in Diego Garcia, British Indian Ocean Territory in June with high heat and humidity, falling to 25°C at night.

Q: How warm is the sea around the British Indian Ocean Territory in June?

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

Q: Does it rain in the British Indian Ocean Territory in June?

There are usually 14 days with some rain in Diego Garcia, British Indian Ocean Territory in June and the average monthly rainfall is 138mm.

Expect 84°F daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in British Indian Ocean Territory in June. Check more long-term weather averages for British Indian Ocean Territory in June before you book your next holiday to British Indian Ocean Territory in 2025/2026.

84
84°F max day temperature
14
14 days with some rainfall
77
77°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
5.4
5.4 inches of monthly rainfall
10
10 (Very High) UV index
81
81°F sea temperature

More about the British Indian Ocean Territory

Save 40% on annual memberships with exclusive offer
Sign up to Secret Flight Club for FREE 7-day trial
Members usually save up to 81% with flight deals

Show discount code

******L40

Redeem Secret Flight Club discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Secret Flight Club offers

The June 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) | Imperial (°F)

How hot is it in the British Indian Ocean Territory in June?

Daytime temperatures usually reach 84°F in Diego Garcia, British Indian Ocean Territory in June with high heat and humidity, falling to 77°F at night.

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

The average sea temperature around Diego Garcia, British Indian Ocean Territory in June is 81°F.

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

There are usually 14 days with some rain in Diego Garcia, British Indian Ocean Territory in June and the average monthly rainfall is 5.4 inches.

British Indian Ocean Territory June sunrise & sunset times

Browse the sunrise and sunset times for British Indian Ocean Territory in June 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.

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

Date	Sunrise times	Sunset times
Sunday, 1st June 2025	07:16	19:00
Sunday, 15th June 2025	07:20	19:02
Monday, 30th June 2025	07:23	19:05

Be inspired

Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers

We promise not to share your details

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^

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
Tourist info	British Indian Ocean Territory Administration