San Clemente Island - Mosquito Cove Weather Forecast

    • 54
    • 64

    Increasing Clouds

    • 54
    • 68

    Partly Sunny

    • 54
    • 74

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 55
    • 69

    Partly Sunny

    • 57
    • 71

    Partly Sunny

Today 29 May Catalina and Santa Barbara Islands

Partly cloudy. Highs in the mid to upper 60s.

Tonight 29 May Catalina and Santa Barbara Islands

Clear in the evening then low Clouds and fog. Lows in the upper 40s and 50s.

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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

    67.8 °F

  • Highest 20 May, 2026

    77 °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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