Climate Overview
The climate in Tambunan is warm and mild. The average annual temperature is 22°C and approximately 2868mm of precipitation falls per year. Tambunan receives a notable amount of rainfall throughout the year, including during its driest month. Tambunan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Tambunan has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is April, when average highs reach 28°C and the mean temperature sits around 23°C. July is the coolest month, with minimum temperatures around 18°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Tambunan is a very wet location, receiving approximately 2868mm of precipitation annually, which averages out to around 239mm per month. The wettest month is June, averaging 313mm of rainfall. May and October also tend to see above-average precipitation. The driest month is February, with just 104mm. That's 209mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Tambunan is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Tambunan, which began on March 20, 2026. Tambunan sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in April at around 28°C, while the coldest stretch bottoms out in July near 18°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 18 to 28°C. Rainfall is heavy, totalling around 633mm across the season with a monthly average of 211mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 18 to 27°C. Rainfall is heavy, totalling around 825mm across the season with a monthly average of 275mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 18 to 27°C. Rainfall is heavy, totalling around 823mm across the season with a monthly average of 274mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 18 to 27°C. Rainfall is heavy, totalling around 587mm across the season with a monthly average of 196mm. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Tambunan based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
