Climate Overview
The climate in Wiang Sa is hot. The average annual temperature is 27°C and approximately 2001mm of precipitation falls per year. October is the wettest month, receiving around 319mm of rainfall. Wiang Sa sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Wiang Sa sees moderate temperature variation throughout the year, ranging from 22°C to 36°C. March is the hottest month, with daytime highs reaching 36°C and an average of 29°C. February is the coolest month, with minimum temperatures around 22°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
Wiang Sa is a very wet location, receiving approximately 2001mm of precipitation annually, which averages out to around 167mm per month. The wettest month is October, averaging 319mm of rainfall. September and November also tend to see above-average precipitation. The driest month is February, with just 20mm. That's 298mm 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
Wiang Sa is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
91 days until Autumn
It is currently summer in Wiang Sa, which began on June 21, 2026. Wiang Sa sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in March at around 36°C, while the coldest stretch bottoms out in February near 22°C. Autumn is next, beginning on September 23, 2026 — 91 days from now.
Spring
Temperatures range from 23 to 36°C. Rainfall is heavy, totalling around 357mm across the season with a monthly average of 119mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 553mm across the season with a monthly average of 184mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 757mm across the season with a monthly average of 252mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 33°C. Rainfall is heavy, totalling around 334mm across the season with a monthly average of 111mm. Winds are generally light, averaging 2km/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 Wiang Sa 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.
