Climate Overview
The climate in Ban Ko Lan is hot. The average annual temperature is 28°C and approximately 1209mm of precipitation falls per year. September is the wettest month, receiving around 243mm of rainfall. Ban Ko Lan is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, June. The coldest months are December, January, February, when temperatures can drop to 25°C.
Temperature
Ban Ko Lan has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is May, when average highs reach 31°C and the mean temperature sits around 30°C. December is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.
Precipitation
Ban Ko Lan is a fairly wet location, receiving approximately 1209mm of precipitation annually, which averages out to around 101mm per month. The wettest month is September, averaging 243mm of rainfall. October and May also tend to see above-average precipitation. The driest month is February, with just 14mm. That's 228mm less than September, 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 Ko Lan 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 March, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, 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 2km/h gap between the calmest and windiest months.
Seasons
93 days until Autumn
It is currently summer in Ban Ko Lan, which began on June 21, 2026. Ban Ko Lan is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in May at around 31°C, while the coldest stretch bottoms out in December near 25°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 27 to 31°C. Precipitation is moderate at around 248mm for the season, averaging 83mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 28 to 30°C. Rainfall is heavy, totalling around 364mm across the season with a monthly average of 121mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 509mm across the season with a monthly average of 170mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 29°C. Rainfall is relatively light, with around 88mm over the season and a monthly average of 29mm. Winds are generally light, averaging 4km/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 Ko Lan 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.
