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UV Index in Brunei

Live UV forecast for 7 cities

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UV climate of Brunei: overview

Brunei stretches from 4.5836° to 5.0176° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 10.5 in Bandar Seri Begawan (peak in April), while in Tutong the yearly maximum is only ≈ 10.5.

UV index by month by climate zone

ZoneCitiesJFMAMJJASONDPeak
Equatorial7 9.4 9.9 10.4 10.5 10.2 9.9 10.1 10.4 10.5 10.3 9.8 9.3 10.5

Calculated clear-sky noon peaks at the average latitude of each zone. In the equatorial belt the UV stays high all year round, with two maxima around the equinoxes. Real values vary with clouds, altitude and ozone.

Sunniest cities in Brunei (highest UV)

Bandar Seri Begawan · 10.5 in April Kuala Belait · 10.5 in April Liang · 10.5 in April Mentiri · 10.5 in April Sengkurong · 10.5 in April

Cities with the mildest sun

Tutong · max 10.5 Serasa · max 10.5 Sengkurong · max 10.5 Mentiri · max 10.5 Liang · max 10.5

When do you need SPF in Brunei?

Using Bandar Seri Begawan as a reference: the UV index reaches 6+ in January, February, March, April, May, June, July, August, September, October, November and December. In the sunniest zones (see table) SPF 30–50+ is needed almost year-round; in the mildest — only in late spring and summer.

FAQ: UV index in Brunei

What is the highest UV index in Brunei?

The calculated clear-sky maximum is ≈ 10.5 — in Bandar Seri Begawan around April. Values above this occur only near the equator and in high mountains.

Which city in Brunei is the sunniest?

Bandar Seri Begawan (peak ≈ 10.5), followed by Kuala Belait and Liang. The mildest sun is in Tutong (max ≈ 10.5).

When is SPF needed in Brunei?

In Bandar Seri Begawan and similar latitudes the UV reaches 6+ in January, February, March, April, May, June, July, August, September, October, November and December: use SPF 30–50+ on sunny days. Protection is advised from UV 3.

Is UV 11+ possible in Brunei?

No — the local maximum is ≈ 10.5. UV 11+ occurs only near the equator, in deserts and high mountains.