Explore historical and projected climate data, climate data by sector, impacts, key vulnerabilities and what adaptation measures are being taken. Explore the overview for a general context of how climate change is affecting Brunei.

Country Summary

This page presents high-level information for Brunei's climate zones and its seasonal cycle for mean temperature and precipitation for the latest climatology, 1991-2020. Climate zone classifications are derived from the Köppen-Geiger climate classification system, which divides climates into five main climate groups divided based on seasonal precipitation and temperature patterns. The five main groups are A (tropical), B (dry), C (temperate), D (continental), and E (polar). All climates except for those in the E group are assigned a seasonal precipitation sub-group (second letter).  Climate classifications are identified by hovering your mouse over the legend. A narrative overview of Brunei's country context and climate is provided following the visualizations.

Köppen-Geiger Climate Classification, 1991-2020
  • Af
  • Am
  • As/Aw
  • BWh
  • BWk
  • BSh
  • BSk
  • Csa
  • Csb
  • Csc
  • Cwa
  • Cwb
  • Cwc
  • Cfa
  • Cfb
  • Cfc
  • Dsa
  • Dsb
  • Dsc
  • Dsd
  • Dwa
  • Dwb
  • Dwc
  • Dwd
  • Dfa
  • Dfb
  • Dfc
  • Dfd
  • ET
  • EF

Brunei Darussalam is located on the northwest coast of the island of Borneo in South East Asia between latitude 4°30’N and longitude 114°04’E. It has a total land area of 5,765 km2 and a coastline of 168 km bounded by the South China Sea on the north and the East Malaysian states of Sarawak and Sabah on the east and west respectively. Brunei’s economy is highly dependent on oil production and export. Oil accounts for about 60% of GDP and 90% of the country’s exports. The plummeting oil prices since the past years and the need for a sustainable economy have driven the country to realign its goals towards the development of local capacity and expertise in other industries and to diversify the economy in order to reduce its dependency on a single industry. The population of Brunei in 2014 was 411,900 inhabitants with an annual growth rate of 1.27%. Brunei Darussalam has an equatorial climate influenced by the monsoon systems known as northeast monsoon and southwest monsoon. The country generally experiences wet and hot conditions throughout the year with average annual rainfall of 3,000 mm and mean daily temperature of 28.04°C between 2010 and 2014 (Second National Communications, 2017).