Climate Overview
The climate in Prachuap Khiri Khan is hot. The average annual temperature is 27°C and approximately 1434mm of precipitation falls per year. Prachuap Khiri Khan receives a notable amount of rainfall throughout the year, including during its driest month. Prachuap Khiri Khan 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 January, February, December, when temperatures can drop to 23°C.
Temperature
Prachuap Khiri Khan has relatively stable temperatures year-round, staying within a 7°C range. The warmest month is April, when average highs reach 30°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 23°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.
Precipitation
Prachuap Khiri Khan is a fairly wet location, receiving approximately 1434mm of precipitation annually, which averages out to around 120mm per month. The wettest month is October, averaging 235mm of rainfall. September and July also tend to see above-average precipitation. The driest month is February, with just 33mm. That's 203mm 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 mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in October, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Prachuap Khiri Khan, which began on March 20, 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 April at around 30°C, while the coldest stretch bottoms out in January near 23°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 312mm across the season with a monthly average of 104mm. Winds are moderate at around 16km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 419mm across the season with a monthly average of 140mm. Winds are moderate at around 19km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 563mm across the season with a monthly average of 188mm. Winds are moderate at around 17km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 29°C. Rainfall is relatively light, with around 141mm over the season and a monthly average of 47mm. Winds are moderate at around 19km/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.
