Lester B Pearson International Airport

CYYZ · Ontario, Canada

Climate Lester B Pearson International Airport 2020-2024

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

Calculated from historical METAR data of Lester B Pearson International Airport (CYYZ) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 53.7 32 26 70 63 57
February 71.0 80 63 74 76 72
March 73.8 67 68 93 62
April 79.4 80 88 81 90
May 85.4 91 86 92 87
June 89.9 82 95 94 97
July 91.8 90 94 82 97
August 92.1 84 92 94 96
September 88.3 91 84 89 83
October 78.2 76 92 66 84
November 77.5 79 77 85 83
December 60.3 41 58 69 62
Average 77.0 54.8 74.1 83.2 82.9 82.2

36th best VFR conditions of Canada

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 5 mi 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 83.7 73 71 87 91 87
February 87.4 94 88 89 91 88
March 89.4 86 78 100 90
April 92.4 90 96 91 97
May 93.6 99 96 97 95
June 96.9 95 98 98 100
July 97.6 96 97 96 100
August 98.6 98 100 99 99
September 97.0 100 94 97 96
October 93.0 98 94 85 99
November 92.3 99 86 94 94
December 83.9 73 83 82 89
Average 91.6 83.0 91.6 92.3 93.8 94.7

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 3⅛ mi 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 -1.7 0 2 -3 0 2
February 1.5 5 3 0 -2 1
March 5.2 4 6 9 7
April 11.7 14 11 13 10
May 19.0 19 21 20 17
June 24.9 24 26 27 26
July 27.6 27 28 26 30
August 26.5 25 27 28 27
September 22.9 23 23 23 22
October 15.6 17 16 17 14
November 7.7 8 10 8 11
December 2.8 5 2 5 3
Average 12.4 2.3 14.3 14.2 14.5 14.1

30th highest temperature of Canada

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 -7.8 -4 -2 -12 -5 -4
February -6.3 -3 -5 -8 -8 -6
March -3.5 -2 -2 -2 0
April 3.0 5 3 4 2
May 9.3 9 11 9 8
June 15.2 16 15 17 15
July 18.4 18 18 18 20
August 17.5 16 18 20 17
September 14.0 15 14 14 13
October 8.0 10 7 11 6
November 0.7 0 2 1 4
December -3.3 1 -2 -1 -3
Average 4.6 -4.2 6.6 5.6 6.4 6.1

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 24.1 25 35 19 13 18
February 21.2 10 22 27 21 19
March 17.7 23 25 7 15
April 15.1 14 17 14 9
May 11.0 10 9 7 11
June 6.5 11 7 5 2
July 5.6 9 7 9 3
August 4.6 7 9 2 3
September 5.0 2 11 5 2
October 13.5 11 10 18 14
November 14.6 10 18 13 14
December 21.8 29 17 16 24
Average 13.3 17.8 14.3 13.8 10.1 10.2

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 10.2 10 9 10 9 10
February 10.9 10 12 11 10 11
March 11.2 12 11 11 11
April 10.7 10 11 10 12
May 9.0 8 9 9 9
June 9.2 8 9 10 9
July 8.3 8 9 8 8
August 8.6 9 9 8 9
September 8.7 8 8 9 9
October 9.3 10 8 8 9
November 10.1 10 10 10 10
December 9.8 8 10 10 11
Average 9.6 9.8 9.1 9.5 9.2 9.9

30th highest wind speed of Canada

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 261° 303° 298° 308° 202°
February 273° 270° 277° 291° 245°
March 314° 280° 288° 140°
April 252° 275° 302° 313°
May 335° 161° 290° 358°
June 022° 281° 239° 262°
July 271° 258° 347° 265°
August 295° 267° 208° 257°
September 116° 298° 284° 239°
October 275° 224° 358° 269°
November 266° 257° 259° 250°
December 293° 282° 253° 277°

Prevailing wind direction

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