Climate Overview
The climate in Poso is warm and mild. The average annual temperature is 24°C and approximately 3744mm of precipitation falls per year. Poso receives a notable amount of rainfall throughout the year, including during its driest month. Poso sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Poso has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is October, when average highs reach 29°C and the mean temperature sits around 24°C. January is the coolest month, with minimum temperatures around 21°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
Poso is a very wet location, receiving approximately 3744mm of precipitation annually, which averages out to around 312mm per month. The wettest month is April, averaging 442mm of rainfall. May and March also tend to see above-average precipitation. The driest month is August, with just 208mm. That's 234mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Poso is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 4km/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
3 days until Spring
It is currently winter in Poso, which began on June 21, 2026. Poso sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in October at around 29°C, while the coldest stretch bottoms out in January near 21°C. Spring is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 21 to 29°C. Rainfall is heavy, totalling around 910mm across the season with a monthly average of 303mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 21 to 28°C. Rainfall is heavy, totalling around 811mm across the season with a monthly average of 270mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 21 to 28°C. Rainfall is heavy, totalling around 1245mm across the season with a monthly average of 415mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 21 to 29°C. Rainfall is heavy, totalling around 779mm across the season with a monthly average of 260mm. 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 Poso 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.
