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Climate history

Cape Portland (40.7849°S, 147.9939°E, 24m AMSL) set as my default location ›

  1. Climatology observations

    Climate History

    Cape Portland Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 21.2 21.3 20.5 18.3 15.9 14.1 13.3 13.6 14.7 16.0 17.9 19.6 17.2
    Mean Min (°C) 15.2 15.5 14.6 12.8 10.8 9.3 8.5 8.4 9.2 10.3 12.0 13.5 11.7
    Mean Rain (mm) 42.0 38.9 54.1 45.7 55.4 57.1 61.0 54.8 49.9 48.6 56.6 46.6 602.7
    Mean Rain Days 7.8 8.0 9.3 12.6 15.0 16.5 17.4 17.0 13.3 11.8 11.3 9.8 147.5

  2. Secondary menu

  3. Climatology Average Number Of Days With Temperatures

    Cape Portland Average Number Of Days With Temperatures

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Ann
    ≥ 40°C
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    ≥ 35°C
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    ≥ 30°C
    0.1
    0.1
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.2
    ≤ 2°C
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    ≤ 0°C
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0

  4. Climatology Daily Records

    Cape Portland Daily Records

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Ann
    High Max. (°C)
    31.9
    30.3
    29.7
    24.5
    21.6
    18.0
    17.6
    18.1
    21.4
    23.0
    29.7
    28.4
    31.9
    Low Max. (°C)
    16.2
    14.9
    14.2
    11.5
    10.4
    10.1
    9.3
    9.2
    10.5
    11.2
    12.5
    13.1
    9.2
    High Min. (°C)
    20.6
    20.1
    20.3
    18.8
    16.5
    15.2
    13.4
    12.8
    13.7
    15.3
    16.9
    18.8
    20.6
    Low Min. (°C)
    8.6
    8.7
    6.8
    6.1
    4.3
    2.8
    3.1
    2.2
    3.1
    3.8
    4.6
    6.7
    2.2
    High Rain (mm)
    160.8
    73.2
    121.2
    53.6
    51.2
    40.2
    56.2
    41.0
    29.8
    34.8
    80.4
    62.4
    160.8

  5. Climatology Monthly Records

    Cape Portland Monthly Records

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Ann
    High Mn. Max. (°C)
    22.7
    22.7
    22.1
    19.6
    17.1
    15.2
    14.0
    14.9
    15.8
    17.4
    19.4
    21.1
    17.8
    Low Mn. Max. (°C)
    19.3
    19.8
    19.2
    16.4
    14.4
    13.0
    12.5
    12.7
    13.3
    14.5
    16.7
    18.2
    16.5
    High Mn. Min. (°C)
    16.5
    16.8
    16.0
    13.9
    12.4
    10.3
    9.9
    10.1
    10.5
    11.2
    13.2
    14.7
    12.2
    Low Mn. Min. (°C)
    13.5
    14.2
    13.1
    10.4
    9.0
    7.6
    7.4
    7.1
    7.8
    8.9
    10.7
    11.9
    10.8
    High Rain (mm)
    182.0
    130.4
    183.4
    100.4
    176.8
    135.6
    109.2
    147.6
    100.0
    110.2
    145.2
    118.2
    966.8
    Low Rain (mm)
    0.8
    5.0
    10.0
    13.6
    13.0
    16.2
    0.0
    0.0
    0.0
    5.4
    5.8
    5.2
    306.8

  6. Climatology Station Details

    Swan Island
    40.73°S, 148.13°E  15m AMSL
    Commenced 2001
    Rainfall records: 23.0 years between 2001 and 2025
    Min. temperature records: 23.0 years 2001 and 2025
    Max. temperature records: 23.0 years between 2001 and 2025

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