Climate Insights for Tambunan

The climate in Tambunan is warm and mild. The average annual temperature is 23°C and approximately 2677mm 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.

Tambunan has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is April, when average highs reach 29°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 19°C and an average of 22°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Tambunan is a very wet location, receiving approximately 2677mm of precipitation annually, which averages out to around 223mm per month. The wettest month is June, averaging 307mm of rainfall. October and May also tend to see above-average precipitation. The driest month is February, with just 98mm. That's 208mm 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.

Tambunan is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 0km/h gap between the calmest and windiest months.

It is currently summer in Tambunan, which began on June 21, 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 29°C, while the coldest stretch bottoms out in July near 19°C. Autumn is next, beginning on September 23, 2026 — 89 days from now.

The best time to visit Tambunan is during February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 98mm per month. By contrast, April can be uncomfortably hot with highs reaching 29°C, while July is the coldest period with lows dropping to 19°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

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.