Climate Overview
The climate in Phetchaburi is hot. The average annual temperature is 28°C and approximately 1030mm of precipitation falls per year. October is the wettest month, receiving around 251mm of rainfall. Phetchaburi 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 January, December, February, when temperatures can drop to 24°C.
Temperature
Phetchaburi 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 30°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 4°C between highs and lows.
Precipitation
Phetchaburi is a moderately rainy area, receiving approximately 1030mm of precipitation annually, which averages out to around 86mm per month. The wettest month is October, averaging 251mm of rainfall. September and May also tend to see above-average precipitation. The driest month is December, with just 20mm. That's 231mm 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
Phetchaburi is relatively calm, with an average annual wind speed of 11km/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 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 8km/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 be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 12km/h in winter, 12km/h in spring, 10km/h in summer, 10km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in Phetchaburi, which began on September 23, 2026. Phetchaburi 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. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 27 to 32°C. Precipitation is moderate at around 204mm for the season, averaging 68mm per month. Winds are generally light, averaging 12km/h. Light layers work well as temperatures warm through the season. It is a great time to be outdoors.
Summer
Temperatures range from 27 to 32°C. Precipitation is moderate at around 257mm for the season, averaging 86mm per month. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 504mm across the season with a monthly average of 168mm. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 30°C. Rainfall is relatively light, with around 66mm over the season and a monthly average of 22mm. Winds are generally light, averaging 12km/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 Phetchaburi 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.
