Climate Overview
The climate in Bulolo is warm and mild. The average annual temperature is 19°C and approximately 4124mm of precipitation falls per year. Bulolo receives a notable amount of rainfall throughout the year, including during its driest month. Bulolo sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Bulolo has relatively stable temperatures year-round, staying within a 10°C range. February is the warmest month, though highs remain moderate at 25°C with a mean of 20°C. July is the coolest month, with minimum temperatures around 15°C and an average of 18°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
Bulolo is a very wet location, receiving approximately 4124mm of precipitation annually, which averages out to around 344mm per month. The wettest month is March, averaging 480mm of rainfall. April and December also tend to see above-average precipitation. The driest month is July, with just 237mm. That's 243mm less than March, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Bulolo is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 3km/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
3 days until Spring
It is currently winter in Bulolo, which began on June 21, 2026. Bulolo 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 25°C, while the coldest stretch bottoms out in July near 15°C. Spring is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 15 to 24°C. Rainfall is heavy, totalling around 972mm across the season with a monthly average of 324mm. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 16 to 25°C. Rainfall is heavy, totalling around 1173mm across the season with a monthly average of 391mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 16 to 24°C. Rainfall is heavy, totalling around 1220mm across the season with a monthly average of 407mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 15 to 22°C. Rainfall is heavy, totalling around 759mm across the season with a monthly average of 253mm. Winds are generally light, averaging 3km/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 Bulolo 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.
