Climate Overview
The climate in Samut Prakan is hot. The average annual temperature is 29°C and approximately 1170mm of precipitation falls per year. September is the wettest month, receiving around 243mm of rainfall. Samut Prakan is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, May, June. The coldest months are December, January, February, when temperatures can drop to 23°C.
Temperature
Samut Prakan has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is April, when average highs reach 33°C and the mean temperature sits around 30°C. December is the coolest month, with minimum temperatures around 23°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.
Precipitation
Samut Prakan is a moderately rainy area, receiving approximately 1170mm of precipitation annually, which averages out to around 98mm per month. The wettest month is September, averaging 243mm of rainfall. October and July also tend to see above-average precipitation. The driest month is December, with just 18mm. That's 225mm 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
Samut Prakan is mildly breezy, with an average annual wind speed of 16km/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 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 15km/h in winter, 17km/h in spring, 18km/h in summer, 13km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Samut Prakan, which began on March 20, 2026. Samut Prakan 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 April at around 33°C, while the coldest stretch bottoms out in December near 23°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 27 to 33°C. Precipitation is moderate at around 237mm for the season, averaging 79mm per month. Winds are moderate at around 17km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 33°C. Rainfall is heavy, totalling around 368mm across the season with a monthly average of 123mm. Winds are moderate at around 18km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 32°C. Rainfall is heavy, totalling around 501mm across the season with a monthly average of 167mm. Winds are generally light, averaging 13km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 32°C. Rainfall is relatively light, with around 65mm over the season and a monthly average of 22mm. Winds are moderate at around 15km/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 Samut Prakan 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.
