Chiang Mai Weather is very consistent and mainly features three seasons: the cool season, the hot season and the rainy season.
Chiang Mai Weather Forecast for Today, by Month & Year in Thailand
The worst time to visit Chiang Mai is during March and April which is when the ‘burning season’ starts. Temperatures start to climb to around 35 degrees during the day and the farmers start burning their crops. This leads to a murky haze hanging over the city and if you suffer from hayfever, you will certainly notice the difference in your allergies. Because of the pollution in the air, you will find that many of the beautiful views form the mountains will be obscured by haze during this time.
Today 18th May30%
High 35° / Low 24°
Chance of a Thunderstorm
Mostly sunny early then increasing clouds with some scattered thunderstorms this afternoon. High near 35C. Winds S at 10 to 15 km/h. Chance of rain 40%.
Tomorrow 19th May10%
High 36° / Low 24°
A few clouds from time to time. High 36C. Winds S at 10 to 15 km/h.
Sunday 20th May10%
High 37° / Low 25°
Mostly sunny skies. High 37C. Winds light and variable.
Monday 21st May50%
High 37° / Low 26°
Chance of a Thunderstorm
Sunny early. Scattered thunderstorms developing later in the day. High 36C. Winds S at 10 to 15 km/h. Chance of rain 50%.
Tuesday 22nd May20%
High 35° / Low 25°
Partly cloudy skies. High near 35C. Winds light and variable.
Wednesday 23rd May80%
High 34° / Low 24°
Thunderstorms likely. High 34C. Winds SSE at 10 to 15 km/h. Chance of rain 80%.
Thursday 24th May80%
High 33° / Low 24°
Scattered thunderstorms in the morning becoming more widespread in the afternoon. High 33C. Winds SSE at 10 to 15 km/h. Chance of rain 80%.
May and June remain hot during the days and nights and the monsoon season typically arrives around June and runs through to November. The days remain hot at over 30 degrees each day, however there may be torrential downpours every few days. You wont find solidly rainy days in Chiang Mai, but rather a burst of heavy rain that will last for an hour or two and then pass. During these times it is not uncommon for roads to flood, so be mindful when making travel plans. Note that rainfall in Chiang Mai is usually heaviest in the month of September.
Chiang Mai is a great place to holiday in part due to its consistent weather. Predictable weather means that you only need to pack shorts and t-shirts as Chiang Mai Weather is mostly hot and sunny. The air is not humid like Bangkok which means that once you are out of the sun, the air temperature is quite pleasant.