Climate Insights for Boyolali

The climate in Boyolali is warm and mild. The average annual temperature is 22°C and approximately 266mm of precipitation falls per year. July is the wettest month, receiving around 33mm of rainfall. Boyolali sits near the equator, so seasonal temperature differences are minimal throughout the year.

Boyolali has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is February, when average highs reach 27°C and the mean temperature sits around 25°C. December is the coolest month, with minimum temperatures around 19°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows. The sharpest temperature change occurs between January and February, with a 3°C shift in average temperatures.

Boyolali is a quite dry location, receiving approximately 266mm of precipitation annually, which averages out to around 22mm per month. The wettest month is January, averaging 33mm of rainfall. February and March also tend to see above-average precipitation. The driest month is August, with just 3mm. That's 30mm less than January, 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 7km/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 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 6km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently winter in Boyolali, which began on June 21, 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 February at around 27°C, while the coldest stretch bottoms out in December near 19°C. Spring is next, beginning on September 23, 2026 — 22 days from now.

The best time to visit Boyolali is during January, March, April, May, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 21mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 27°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

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.