Climate averages 1991–2020

Bintulu weather
in May.

A hot, very wet month: one of the warmest and the 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 30.7°C Daytime mean, May
Average low 24.2°C Night-time mean, May
Rainfall 183 mm 23 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Bintulu · average highYear overview

May is a hot month in Bintulu: daytime highs average 30.7°C and nights cool to about 24.2°C. By daytime temperature it is one of the warmest months of the year.

Expect about 183 mm of rain on roughly 23 days, which makes May a very wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average May day.

The nearest other city in this atlas is Sibu (166 km away). In May its highs average 30.5°C, about as warm as Bintulu, with 218 mm of rain.

Among the 72 cities listed in Malaysia, Bintulu ranks 7th of 72 for the warmest May highs and 19th of 72 for the driest May (rainfall, lowest first). The mean May high of those 72 cities is 30.1°C; Bintulu is 0.7°C warmer than that mean.

From May to June, average highs fall by 0.1°C to 30.6°C, and monthly rainfall falls from 183 mm to 177 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 20253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 3500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Bintulu climate table

1991–2020
Monthly climate averages for Bintulu, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 29.1°C23.2°C23.2°C29926.212.012 h
February 29.4°C23.3°C23.3°C19321.812.012 h
March 30.1°C23.5°C23.5°C16522.612.112 h
April 30.5°C23.8°C23.8°C18824.212.212 h
May, selected 30.7°C24.2°C24.2°C18322.712.312 h
June 30.6°C24.0°C24.0°C17720.412.312 h
July 30.5°C23.8°C23.8°C17019.612.312 h
August 30.7°C23.8°C23.8°C19621.012.212 h
September 30.4°C23.6°C23.6°C21323.812.112 h
October 29.8°C23.4°C23.4°C27427.312.012 h
November 29.6°C23.3°C23.3°C29128.412.012 h
December 29.3°C23.3°C23.3°C34828.711.912 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Bintulu

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bintulu) is explained once on the Bintulu year overview and on the Sources, method and limits page.