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Chiang Mai Weather

The weather in Chiang Mai Thailand is characterized by three seasons : hot, hotter and hottest.  The cool season, which lasts from November to February, is dominated by northeasterly winds. The hot season runs from March to May.  The hot season, which gets its name for a good reason, sees temperatures in Chiang Mai rise to as high as 40-42°C (104-108°F). However, in the evenings, breezes blow in from the nearby mountains, and these make the nights quite comfortable. 

Seasons

  • Hot Season: Hot and dry season – March to June
  • Green Season: July to October
  • Cool season: November to February

Summer Season : Monthly Normals for Chiang Mai

March April May June
High Temperature (F/C) 92 / 33 94 / 34 89 / 32 87 / 31
Low Temperature (F/C) 66 / 19 72 / 22 73 / 23 74 / 23
Precipitation (in/mm) 0.51 / 13.0 1.97 / 50.0 6.22 / 158.0 5.20 / 132.0
Average Percent Sunshine 39 38 37 25

 

Rainy Season : Monthly Normals for Chiang Mai

  July August September October
High Temperature (F/C) 86 / 30 84 / 29 85 / 29 85 / 29
Low Temperature (F/C) 73 / 23 73 / 23 72 / 22 70 / 21
Precipitation (in/mm) 6.34 / 161.0 9.29 / 236.0 8.98 / 228.0 4.80 / 122.0
Average Percent Sunshine 21 20 24 31

Winter Season : Monthly Normals for Chiang Mai

November December January February
High Temperature (F/C) 84 / 29 81 / 27 82 / 28 88 / 31
Low Temperature (F/C) 65 / 18 60 / 16 58 / 14 60 / 16
Precipitation (in/mm) 2.09 / 53.0 0.79 / 20.0 0.28 / 7.0 0.20 / 5.0
Average Percent Sunshine 33 36 39 38