Climate Overview
The climate in Banda Aceh is hot. The average annual temperature is 27°C and approximately 2529mm of precipitation falls per year. Banda Aceh receives a notable amount of rainfall throughout the year, including during its driest month. Banda Aceh sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Banda Aceh has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is June, when average highs reach 30°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 24°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Banda Aceh is a very wet location, receiving approximately 2529mm of precipitation annually, which averages out to around 211mm per month. The wettest month is November, averaging 408mm of rainfall. October and May also tend to see above-average precipitation. The driest month is February, with just 96mm. That's 311mm less than November, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Banda Aceh is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 6km/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. Wind tends to pick up during the summer months. The seasonal averages are 9km/h in winter, 7km/h in spring, 12km/h in summer, 9km/h in autumn.
Seasons
3 days until Autumn
It is currently summer in Banda Aceh, which began on June 21, 2026. Banda Aceh sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in June at around 30°C, while the coldest stretch bottoms out in January near 24°C. Autumn is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 619mm across the season with a monthly average of 206mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 447mm across the season with a monthly average of 149mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 30°C. Rainfall is heavy, totalling around 917mm across the season with a monthly average of 306mm. Winds are generally light, averaging 9km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 30°C. Rainfall is heavy, totalling around 546mm across the season with a monthly average of 182mm. Winds are generally light, averaging 9km/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 Banda Aceh 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.
