Climate Overview
The climate in Ban Chalong is hot. The average annual temperature is 28°C and approximately 2275mm of precipitation falls per year. October is the wettest month, receiving around 328mm of rainfall. Ban Chalong sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Ban Chalong has relatively stable temperatures year-round, staying within a 3°C range. The warmest month is April, when average highs reach 29°C and the mean temperature sits around 28°C. December is the coolest month, with minimum temperatures around 26°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.
Precipitation
Ban Chalong is a very wet location, receiving approximately 2275mm of precipitation annually, which averages out to around 190mm per month. The wettest month is October, averaging 328mm of rainfall. September and May also tend to see above-average precipitation. The driest month is February, with just 15mm. That's 312mm less than October, 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.
Wind
Ban Chalong is relatively calm, with an average annual wind speed of 5km/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 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.
Seasons
93 days until Autumn
It is currently summer in Ban Chalong, which began on June 21, 2026. Ban Chalong 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 29°C, while the coldest stretch bottoms out in December near 26°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 427mm across the season with a monthly average of 142mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 671mm across the season with a monthly average of 224mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 850mm across the season with a monthly average of 283mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 327mm across the season with a monthly average of 109mm. Winds are generally light, averaging 5km/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 Ban Chalong 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.
