Climate Insights for Boyolali

The climate in Boyolali is warm and mild. The average annual temperature is 24°C and approximately 2968mm of precipitation falls per year. Boyolali receives a notable amount of rainfall throughout the year, including during its driest month. Boyolali sits near the equator, so seasonal temperature differences are minimal throughout the year.

Boyolali has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is April, when average highs reach 29°C and the mean temperature sits around 25°C. August is the coolest month, with minimum temperatures around 19°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

Boyolali is a very wet location, receiving approximately 2968mm of precipitation annually, which averages out to around 247mm per month. The wettest month is February, averaging 469mm of rainfall. January and March also tend to see above-average precipitation. The driest month is August, with just 32mm. That's 436mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Boyolali is relatively calm, with an average annual wind speed of 8km/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 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 9km/h in winter, 9km/h in spring, 7km/h in summer, 7km/h in autumn.

It is currently autumn in Boyolali, which began on March 20, 2026. Boyolali sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in April at around 29°C, while the coldest stretch bottoms out in August near 19°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Boyolali is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 39mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 29°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Boyolali 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.