Climate Insights for Belawan

The climate in Belawan is hot. The average annual temperature is 26°C and approximately 121mm of precipitation falls per year. February is the wettest month, receiving around 33mm of rainfall. Belawan sits near the equator, so seasonal temperature differences are minimal throughout the year.

Belawan has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is March, when average highs reach 29°C and the mean temperature sits around 29°C. December is the coolest month, with minimum temperatures around 24°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.

Belawan is a quite dry location, receiving approximately 121mm of precipitation annually, which averages out to around 10mm 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 0mm. That's 32mm 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.

Belawan is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 4km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in Belawan, which began on June 21, 2026. Belawan sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in March at around 29°C, while the coldest stretch bottoms out in December near 24°C. Autumn is next, beginning on September 23, 2026 — 22 days from now.

The best time to visit Belawan is during September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 4mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 29°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Belawan 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.