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Climate history

Portland (38.351°S, 141.5877°E, 9m AMSL) set as my default location ›

  1. Climatology observations

    Climate History

    Portland Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 21.4 21.2 20.3 18.3 16.2 14.3 13.8 14.6 15.9 17.3 18.6 19.8 17.7
    Mean Min (°C) 14.8 15.1 14.1 12.3 10.8 9.1 8.4 8.7 9.5 10.5 12.0 13.1 11.5
    Mean Rain (mm) 31.7 25.3 34.7 46.3 73.3 91.1 100.1 96.7 72.3 53.7 43.5 39.0 711.3
    Mean Rain Days 7.6 7.1 11.6 15.2 19.3 20.0 21.8 22.8 18.7 16.3 12.1 10.6 183.5

  2. Secondary menu

  3. Climatology Average Number Of Days With Temperatures

    Portland Average Number Of Days With Temperatures

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Ann
    ≥ 40°C
    0.3
    0.0
    0.1
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.1
    0.5
    ≥ 35°C
    1.2
    0.7
    0.6
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.4
    0.7
    3.6
    ≥ 30°C
    2.4
    1.9
    1.7
    0.4
    0.0
    0.0
    0.0
    0.0
    0.0
    0.8
    1.5
    2.0
    10.9
    ≤ 2°C
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.1
    0.0
    0.0
    0.0
    0.0
    0.0
    0.1
    ≤ 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

    Portland Daily Records

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Ann
    High Max. (°C)
    42.4
    39.8
    40.6
    35.2
    28.3
    21.0
    20.0
    25.2
    29.3
    35.0
    37.1
    45.1
    45.1
    Low Max. (°C)
    14.0
    15.0
    14.0
    12.1
    11.0
    9.7
    9.0
    9.8
    10.1
    10.5
    11.4
    13.0
    9.0
    High Min. (°C)
    28.5
    24.8
    24.9
    22.4
    17.7
    14.4
    13.1
    14.5
    17.7
    20.2
    22.2
    23.0
    28.5
    Low Min. (°C)
    6.6
    8.1
    7.5
    5.8
    3.0
    2.9
    1.4
    2.3
    3.0
    3.5
    4.8
    5.7
    1.4
    High Rain (mm)
    73.8
    47.0
    41.4
    38.4
    54.2
    53.0
    39.2
    49.0
    39.0
    46.2
    55.6
    48.0
    73.8

  5. Climatology Monthly Records

    Portland Monthly Records

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Ann
    High Mn. Max. (°C)
    23.9
    24.5
    23.2
    20.9
    17.6
    15.2
    14.7
    16.7
    17.8
    19.7
    21.7
    22.5
    18.4
    Low Mn. Max. (°C)
    18.4
    18.7
    18.6
    16.1
    14.7
    13.0
    13.0
    13.1
    13.9
    15.1
    16.5
    16.8
    16.5
    High Mn. Min. (°C)
    15.9
    16.7
    15.9
    13.5
    12.4
    10.4
    9.7
    10.2
    10.9
    11.5
    14.2
    14.3
    12.0
    Low Mn. Min. (°C)
    13.2
    13.7
    13.0
    11.0
    9.6
    7.9
    7.2
    7.8
    8.7
    9.5
    10.8
    11.7
    11.0
    High Rain (mm)
    145.2
    64.4
    62.4
    96.8
    173.0
    157.4
    196.6
    243.0
    134.8
    112.4
    87.4
    102.8
    997.6
    Low Rain (mm)
    0.0
    0.0
    7.6
    9.0
    19.8
    44.2
    37.2
    37.0
    24.4
    6.2
    10.8
    9.0
    487.2

  6. Climatology Station Details

    Cape Nelson
    38.43°S, 141.54°E  46m AMSL
    Commenced 1995
    Rainfall records: 28.0 years between 1995 and 2024
    Min. temperature records: 28.0 years 1995 and 2024
    Max. temperature records: 28.0 years between 1995 and 2024

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