Observatory Island Weather Forecast

    • 15
    • 24

    Partly cloudy

    • 13
    • 26

    Becoming windy. Partly cloudy

    • 14
    • 32

    Sunny

    • 19
    • 37

    Windy. Partly cloudy

    • 17
    • 22

    Cloudy

    • 16
    • 22

    Shower or two

    • 16
    • 21

    Cloudy

Today 23 Dec Esperance

Partly cloudy. Light winds becoming southeasterly 25 to 35 km/h in the morning then tending easterly 15 to 20 km/h in the late evening.

Esperance Coastal Waters

Bremer Bay to Israelite Bay
Wind
East to southeasterly about 10 knots increasing to 10 to 15 knots in the middle of the day. Winds reaching up to 20 knots west of Esperance during the afternoon and evening.
Seas
Around 1 metre.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres around midday.
Weather
Cloudy.
Weather Situation
A firm ridge persists across much of southern WA. A west coast trough is deepening and will move offshore on Wednesday before moving inland on Friday ahead of a weak cold front.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Observatory Island Temperature Statistics View More

December Temperature

Esperance (13km)

  • Lowest 14 December, 2025

    11.2 °C

  • Average December

    19.8 °C

  • Highest 16 December, 2025

    44.1 °C

Climate (2020–Present)

Esperance (13km)

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  • Average Low 2020–2025

    12.6 °C

  • Average 2020–2025

    16.6 °C

  • Average High 2020–2025

    22.3 °C
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