San Clemente Island - Mosquito Cove Weather Forecast

    • 53
    • 69

    Partly Sunny

    • 53
    • 66

    Mostly Cloudy

    • 54
    • 66

    Patchy Fog

    • 54
    • 66

    Partly Sunny

    • 52
    • 64

    Mostly Cloudy

    • 51
    • 63

    Mostly Cloudy

    • 53
    • 63

    Partly Sunny

Today 21 May Catalina and Santa Barbara Islands

Areas of low Clouds and fog. Highs in the lower to mid 70s.

Tonight 21 May Catalina and Santa Barbara Islands

Areas of low Clouds and fog. Lows in the 50s to lower 60s.

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  • Temperature Real-Time

San Clemente Island - Mosquito Cove Temperature Statistics

May Temperature

San Clemente Island NALF (14.9 miles)

  • Lowest 5 May, 2026

    60.1 °F

  • Average May

    67.7 °F

  • Highest 19 May, 2026

    75 °F

Climate (2021–Present)

San Clemente Island NALF (14.9 miles)

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  • Average Low 2021–2026

    57.6 °F

  • Average 2021–2026

    62 °F

  • Average High 2021–2026

    66.4 °F
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