Kualanamu International Airport

WIMM · North Sumatra, Indonesia

Climate Kualanamu International Airport 2020-2024

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

Calculated from historical METAR data of Kualanamu International Airport (WIMM) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 61.6 58 72 76 57 59
February 60.9 61 74 58 72 64
March 63.6 55 65 69 70 67
April 66.2 71 69 67 66 68
May 65.9 62 76 70 64 70
June 68.5 71 63 69 73
July 65.7 67 70 74 66
August 66.5 71 73 63 66
September 64.5 62 72 66
October 66.3 61 71 71 65
November 66.7 66 73 72 66
December 60.5 58 47 68 65
Average 64.0 61.3 67.5 68.1 67.4 66.1

15th best VFR conditions of Indonesia

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 88.2 82 91 94 92 87
February 84.8 82 90 90 88 86
March 84.5 80 83 90 87 86
April 88.3 89 87 91 90 89
May 88.9 85 93 93 90 94
June 88.3 87 88 87 95
July 86.3 86 87 92 88
August 87.9 90 93 88 86
September 86.6 85 89 91
October 89.4 85 89 96 90
November 90.1 86 92 96 91
December 88.2 88 76 92 92
Average 87.1 83.4 87.5 89.7 90.6 89.4

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 29.8 30 30 31 30 30
February 30.7 32 31 31 31 31
March 31.3 32 31 31 32 32
April 31.6 33 32 32 31 32
May 31.7 32 33 32 32 31
June 30.9 32 31 31 31
July 31.2 32 32 32 31
August 31.1 31 31 31 32
September 30.5 31 31 31
October 30.6 31 30 32 31
November 30.0 30 30 31 30
December 29.5 30 28 30 30
Average 30.8 31.7 31.1 30.7 30.8 30.8

17th highest temperature of Indonesia

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 23.5 23 23 24 24 24
February 23.7 24 24 24 24 24
March 24.0 25 24 24 24 25
April 24.6 26 24 25 24 25
May 24.9 26 25 25 25 25
June 24.3 25 24 24 24
July 24.2 25 24 24 24
August 23.8 24 24 24 24
September 23.9 24 24 24
October 24.3 25 24 24 25
November 24.3 25 24 24 24
December 24.0 25 24 24 24
Average 24.1 24.6 24.2 23.9 24.1 24.3

11th lowest temperature of Indonesia

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 4.9 8 3 3 8 4
February 2.9 1 2 8 2 5
March 2.2 2 3 4 2 1
April 2.2 1 2 3 2 2
May 2.2 4 1 3 2 3
June 3.3 2 6 5 2
July 2.3 4 3 2 5
August 4.5 4 5 6 3
September 4.4 4 2 5
October 5.6 5 10 3 5
November 7.7 11 6 7 12
December 9.0 7 24 15 6
Average 3.9 3.2 3.7 5.7 4.7 4.1

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 6.1 6 6 7 6 7
February 6.8 7 7 7 7 7
March 7.0 7 7 7 7 8
April 6.3 7 7 6 6 6
May 5.8 5 6 6 7 6
June 5.8 6 6 6 6
July 6.0 6 6 6 6
August 6.0 6 6 5 6
September 6.0 6 6 6
October 5.7 5 5 7 5
November 5.9 6 6 7 6
December 6.1 6 6 7 6
Average 6.2 6.5 6.3 6.3 6.3 6.2

17th highest wind speed of Indonesia

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 317° 329° 335° 350° 322°
February 340° 347° 346° 341° 344°
March 351° 353° 346° 356° 348°
April 013° 347° 334° 006° 008°
May 064° 032° 045° 047° 039°
June 054° 038° 036° 069°
July 063° 054° 058° 079°
August 048° 054° 033° 062°
September 051° 040° 050°
October 348° 010° 007° 033°
November 315° 326° 328° 326°
December 306° 291° 307° 317°

Prevailing wind direction

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