Climate Overview
The climate in Prachuap Khiri Khan is hot. The average annual temperature is 28°C and approximately 1411mm of precipitation falls per year. October is the wettest month, receiving around 254mm of rainfall. Prachuap Khiri Khan is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, March. The coldest months are January, February, December, when temperatures can drop to 24°C.
Temperature
Prachuap Khiri Khan has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is May, when average highs reach 32°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 24°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Prachuap Khiri Khan is a fairly wet location, receiving approximately 1411mm of precipitation annually, which averages out to around 118mm per month. The wettest month is October, averaging 254mm of rainfall. September and May also tend to see above-average precipitation. The driest month is February, with just 25mm. That's 229mm 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
Prachuap Khiri Khan 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 August, 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
91 days until Autumn
It is currently summer in Prachuap Khiri Khan, which began on June 21, 2026. Prachuap Khiri Khan 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 32°C, while the coldest stretch bottoms out in January near 24°C. Autumn is next, beginning on September 23, 2026 — 91 days from now.
Spring
Temperatures range from 26 to 32°C. Rainfall is heavy, totalling around 303mm across the season with a monthly average of 101mm. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 375mm across the season with a monthly average of 125mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 546mm across the season with a monthly average of 182mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 30°C. Precipitation is moderate at around 187mm for the season, averaging 62mm per month. 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 Prachuap Khiri Khan 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.
