Climate Overview
The climate in Bitung is hot. The average annual temperature is 26°C and approximately 3100mm of precipitation falls per year. Bitung receives a notable amount of rainfall throughout the year, including during its driest month. Bitung sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Bitung has relatively stable temperatures year-round, staying within a 7°C range. The warmest month is May, when average highs reach 30°C and the mean temperature sits around 27°C. September is the coolest month, with minimum temperatures around 23°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Bitung is a very wet location, receiving approximately 3100mm of precipitation annually, which averages out to around 258mm per month. The wettest month is June, averaging 382mm of rainfall. May and July also tend to see above-average precipitation. The driest month is August, with just 155mm. That's 227mm less than June, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Bitung is relatively calm, with an average annual wind speed of 2km/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 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
93 days until Autumn
It is currently summer in Bitung, which began on June 21, 2026. Bitung sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 30°C, while the coldest stretch bottoms out in September near 23°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 24 to 30°C. Rainfall is heavy, totalling around 796mm across the season with a monthly average of 265mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 29°C. Rainfall is heavy, totalling around 824mm across the season with a monthly average of 275mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 751mm across the season with a monthly average of 250mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 29°C. Rainfall is heavy, totalling around 730mm across the season with a monthly average of 243mm. Winds are generally light, averaging 2km/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 Bitung 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.
