Weather in Chiang Mai Today
Current temperature in Chiang Mai: 25°C (77°F). Sunny. Today's high 31°C (88°F), low 23°C (73°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Very high UV today. Limit sun exposure around midday. Apply SPF 30+ every 2 hours and seek shade.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 28°C.
29 of the last 30 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Health & Activity Advice
UV index is 9 today — very high. Limit sun exposure around midday, apply SPF 30+ every two hours, and seek shade when possible.
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.
High humidity (90%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.
Nearby Regional Outlook
Chiang Mai Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Chiang Mai?
The hottest month in Chiang Mai is typically April, with daytime highs averaging around 35.4°C (96°F), based on 10 years of historical weather data. Overnight lows during this period average near 23.5°C (74°F). Take extra precautions during this time stay hydrated and avoid strenuous outdoor activity in peak afternoon heat.
What is the coldest month in Chiang Mai?
The coldest month in Chiang Mai is typically January, with overnight lows averaging around 16.6°C (62°F) and daytime highs near 27.2°C (81°F), based on 10 years of historical weather data.
When does the rainy season start in Chiang Mai?
Chiang Mai has a clearly defined rainy season running roughly from July to September, based on 10 years of historical rainfall data. August is typically the wettest month, averaging about 412 mm of rain. Outside this window, rainfall is much lighter for the rest of the year.
What's the best time of year to visit Chiang Mai?
The best time to visit Chiang Mai is typically December to January, when daytime highs average a comfortable 27.3°C (81°F). Rainfall during this window averages around 23 mm, well below the 412 mm seen in August, the wettest month. This is based on 10 years of historical weather data.
Is Chiang Mai's air quality safe right now?
As of the latest reading, Chiang Mai's air quality index (AQI) is 69, rated "Moderate", based on the nearest monitoring station. Air quality is acceptable, though unusually sensitive individuals may notice minor effects.