Climate Overview
The climate in Tarakan is hot. The average annual temperature is 28°C and approximately 3143mm of precipitation falls per year. Tarakan receives a notable amount of rainfall throughout the year, including during its driest month. Tarakan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Tarakan has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Tarakan is a very wet location, receiving approximately 3143mm of precipitation annually, which averages out to around 262mm per month. The wettest month is December, averaging 392mm of rainfall. November and October also tend to see above-average precipitation. The driest month is February, with just 195mm. That's 196mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Tarakan is relatively calm, with an average annual wind speed of 2km/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 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, 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 1km/h gap between the calmest and windiest months.
Seasons
90 days until Autumn
It is currently summer in Tarakan, which began on June 21, 2026. Tarakan sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in August at around 31°C, while the coldest stretch bottoms out in July near 25°C. Autumn is next, beginning on September 23, 2026 — 90 days from now.
Spring
Temperatures range from 25 to 31°C. Rainfall is heavy, totalling around 664mm across the season with a monthly average of 221mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 31°C. Rainfall is heavy, totalling around 763mm across the season with a monthly average of 254mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 31°C. Rainfall is heavy, totalling around 874mm across the season with a monthly average of 291mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 842mm across the season with a monthly average of 281mm. Winds are generally light, averaging 2km/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 Tarakan 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.
