Brunei Climate – June 2026 Update
This month in numbers
Brunei experienced its 4th warmest June on record in 2026, with an average temperature of 27.33°C, marking an anomaly of +1.3°C compared to the 1961–1990 baseline. Globally, June 2026 was the 3rd warmest June for land temperatures, with an anomaly of +1°C.
What changed
The period of April to June 2026 was Brunei's 7th warmest such period on record, with an average temperature of 27.29°C, an anomaly of +1.2°C. This trend aligns with the global picture, as global land temperatures for the same three-month period ranked as the 2nd warmest on record, with an anomaly of +1°C. Brunei is currently experiencing the Southwest Monsoon season, which began in late May and is expected to continue until September. This season is typically characterised by more stable atmospheric conditions and a reduction in localised thunderstorms.
What’s driving change?
The warmer conditions in Brunei are influenced by the ongoing El Niño–Southern Oscillation (ENSO) in its El Niño phase, which began in June and is expected to persist through the second half of 2026, potentially strengthening between August and September. El Niño conditions are generally associated with reduced rainfall and higher temperatures in Brunei. Additionally, a positive () is forecast to develop between July and August, which could lead to below-normal rainfall across much of the southern ASEAN region. Brunei also experienced active weather conditions from July 8th to 10th due to the indirect influence of Typhoon Bavi, bringing occasional thundershowers and strong winds.
Looking ahead
Rainfall in Brunei is expected to be slightly below normal for June and July 2026, and below normal in August 2026, according to the Brunei Darussalam Meteorological Department.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Year-on-Year Trends
The 4byo Climate Helix – Brunei
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Brunei – Monthly Temperature – All Years
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Records – Brunei
Our World in Data / NOAA - Anomalies vs 1901-2000 mean
Shifting Seasons
Weakly seasonalKöppen Af · TropicalBrunei is weakly seasonal - temperature barely changes across the year (1.2°C range) and rainfall is fairly even. The clearest climate signal here is overall warming: monthly temperature has risen in every month.
Baseline vs recent monthly temperature climatology. Biggest warming: Nov (+2.0°C).
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Rainfall & Precipitation
Rainfall & Rain Days – Totals
Headline: anomaly vs the 1961–1990 mean. Small figure: the actual value. Rank: position in the full record (1st = highest ever). Record: highest (or lowest) value on record with its year.
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Brunei
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
FAQs
FAQs
How is the climate in Brunei changing?
Brunei is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
Where does the climate data for Brunei come from?
Climate data for Brunei comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Brunei climate data cover?
Temperature, rainfall and emissions data for Brunei Brunei climate profile with temperature anomalies, rainfall (CRU TS), warm/wet-season shift analysis, CO₂ emissions (Our World in Data) and electricity generation mix — all vs the 1961–1990 baseline..
How often is the Brunei climate update refreshed?
The Brunei climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.