Climate Overview
The climate in Biaru is warm and mild. The average annual temperature is 25°C and approximately 4337mm of precipitation falls per year. Biaru receives a notable amount of rainfall throughout the year, including during its driest month. Biaru sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Biaru has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is January, when average highs reach 30°C and the mean temperature sits around 25°C. July 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
Biaru is a very wet location, receiving approximately 4337mm of precipitation annually, which averages out to around 361mm per month. The wettest month is April, averaging 471mm of rainfall. December and March also tend to see above-average precipitation. The driest month is July, with just 243mm. That's 228mm 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
Biaru 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 February, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.
Seasons
1 day until Spring
It is currently winter in Biaru, which began on June 21, 2026. Biaru sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in January at around 30°C, while the coldest stretch bottoms out in July near 21°C. Spring is next, beginning on September 23, 2026 (1 days from now).
Spring
Temperatures range from 21 to 30°C. Rainfall is heavy, totalling around 1062mm across the season with a monthly average of 354mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 1191mm across the season with a monthly average of 397mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 1224mm across the season with a monthly average of 408mm. 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 28°C. Rainfall is heavy, totalling around 860mm across the season with a monthly average of 287mm. Winds are generally light, averaging 4km/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 Biaru 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.
