Very hot, humid tropical climate most of the year. Heavy rainfall in the monsoon season, November to December. Average temperature is 28°C (82ºF).

Lightweight cottons and linens. Waterproofing is advisable all year.

Brunei is a small coastal state just 443km (277 miles) north of the equator in the northwest corner of Borneo, bordered on all landward sides by Sarawak (Malaysia), which splits Brunei into two parts. The landscape is mainly equatorial jungle cut by rivers. Most settlements are situated at estuaries. The state is made up of four districts: Brunei-Muara (the capital district), Tutong and Belait (Brunei’s centre of oil and gas exploitation, in the west of the country); and Temburong, the eastern district, which has large areas of virgin rainforest. The islands in Brunei Bay fall within the Brunei-Muara or Temburong districts.