Climate Insights for Banyumas

The climate in Banyumas is hot. The average annual temperature is 26°C and approximately 2839mm of precipitation falls per year. Banyumas receives a notable amount of rainfall throughout the year, including during its driest month. Banyumas sits near the equator, so seasonal temperature differences are minimal throughout the year.

Banyumas has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is April, when average highs reach 30°C and the mean temperature sits around 27°C. August is the coolest month, with minimum temperatures around 22°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.

Banyumas is a very wet location, receiving approximately 2839mm of precipitation annually, which averages out to around 237mm per month. The wettest month is January, averaging 413mm of rainfall. December and February also tend to see above-average precipitation. The driest month is August, with just 37mm. That's 375mm 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.

Banyumas is relatively calm, with an average annual wind speed of 11km/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 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/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 13km/h in winter, 12km/h in spring, 9km/h in summer, 9km/h in autumn.

It is currently autumn in Banyumas, which began on March 20, 2026. Banyumas 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 30°C, while the coldest stretch bottoms out in August near 22°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Banyumas is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 52mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 30°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 Banyumas 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.