Chiang Mai International Airport

VTCC · Chiang Mai, Thailand

Climate Chiang Mai International Airport 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Chiang Mai International Airport (VTCC) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 89.3 89 95 99 75 73
February 80.7 82 78 98 72 68
March 55.7 49 21 95 46 49
April 65.4 35 30 87 82 70
May 95.1 75 97 95 100 100
June 98.1 94 99 100 98 99
July 97.4 95 100 98 99
August 95.9 93 98 100 94
September 97.2 91 97 99 98
October 97.1 91 98 99 99
November 98.0 99 97 99 100
December 92.1 94 94 91 99
Average 87.0 70.8 82.0 96.6 88.4 87.4

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 98.9 98 100 100 98 100
February 99.5 100 100 100 100 98
March 84.4 81 64 100 90 79
April 87.2 73 58 98 93 92
May 99.2 97 100 97 100 100
June 99.4 100 100 100 99 100
July 99.6 100 100 100 100
August 99.0 99 99 100 98
September 99.4 98 99 99 100
October 98.8 98 99 99 100
November 99.4 100 100 100 100
December 98.4 100 99 100 100
Average 96.4 91.4 93.0 99.1 98.2 97.0

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month Average 2024 2023 2022 2021 2020
January 29.6 30 29 30 29 32
February 32.9 34 32 31 32 34
March 35.7 36 34 35 36 37
April 36.3 39 38 34 33 37
May 34.9 35 36 32 36 37
June 33.2 33 34 33 33 34
July 32.4 34 32 32 33
August 31.5 32 32 32 31
September 31.9 32 31 32 32
October 31.4 31 31 31 30
November 31.2 31 32 31 31
December 29.2 30 29 28 29
Average 32.7 34.6 32.7 31.8 31.9 33.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month Average 2024 2023 2022 2021 2020
January 16.6 18 15 16 16 15
February 16.9 17 17 17 18 17
March 20.9 21 21 23 21 21
April 23.8 26 24 24 23 24
May 24.8 26 25 24 25 25
June 25.0 26 25 25 25 25
July 24.6 25 25 25 25
August 24.3 25 24 25 24
September 24.0 24 24 24 25
October 23.1 24 22 23 23
November 21.0 22 21 22 20
December 17.5 20 20 17 16
Average 21.9 22.3 22.2 22.1 21.8 21.7

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 1.3 1 0 1 0 0
February 0.2 0 0 2 0 0
March 0.2 0 1 1 0 0
April 1.2 1 0 1 3 1
May 5.0 8 4 11 2 2
June 7.5 10 7 5 7 8
July 10.2 12 11 10 5
August 13.1 17 14 7 17
September 9.8 18 17 8 9
October 6.4 11 6 4 9
November 0.6 1 0 0 0
December 0.5 0 1 0 0
Average 4.6 3.3 6.1 6.1 3.5 4.2

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month Average 2024 2023 2022 2021 2020
January 3.3 4 3 4 4 3
February 3.6 4 4 4 3 4
March 4.1 4 4 4 4 4
April 4.5 5 4 5 4 5
May 4.8 5 5 5 5 5
June 5.0 5 5 5 5 5
July 4.5 5 4 5 4
August 4.2 4 4 5 4
September 4.2 4 4 4 4
October 4.2 4 4 4 6
November 3.7 4 3 4 4
December 3.3 3 4 3 3
Average 4.2 4.4 4.1 4.2 4.1 4.2

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month 2024 2023 2022 2021 2020
January 187° 165° 183° 176° 160°
February 164° 175° 183° 142° 176°
March 168° 165° 178° 150° 168°
April 164° 175° 230° 163° 168°
May 187° 198° 219° 175° 179°
June 208° 223° 205° 206° 206°
July 204° 190° 203° 187°
August 196° 203° 205° 193°
September 347° 335° 145° 197°
October 199° 023° 013° 001°
November 334° 343° 188° 360°
December 188° 238° 281° 154°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.