Climate Overview
The climate in Gunungsitoli is hot. The average annual temperature is 27°C and approximately 4152mm of precipitation falls per year. Gunungsitoli receives a notable amount of rainfall throughout the year, including during its driest month. Gunungsitoli sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Gunungsitoli has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is February, when average highs reach 30°C and the mean temperature sits around 28°C. September 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
Gunungsitoli is a very wet location, receiving approximately 4152mm of precipitation annually, which averages out to around 346mm per month. The wettest month is November, averaging 498mm of rainfall. October and December also tend to see above-average precipitation. The driest month is June, with just 239mm. That's 259mm less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Gunungsitoli is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
87 days until Winter
It is currently autumn in Gunungsitoli, which began on September 23, 2026. Gunungsitoli sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in February at around 30°C, while the coldest stretch bottoms out in September near 25°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 1061mm across the season with a monthly average of 354mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 859mm across the season with a monthly average of 286mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 1309mm across the season with a monthly average of 436mm. Winds are generally light, averaging 6km/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 923mm across the season with a monthly average of 308mm. Winds are generally light, averaging 5km/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 Gunungsitoli 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.
