San Clemente Island - Northwest Harbor Weather Forecast

    • 54
    • 61

    Mostly Cloudy

    • 54
    • 60

    Windy

    • 54
    • 60

    Partly Sunny

    • 55
    • 62

    Patchy Fog

    • 54
    • 62

    Patchy Fog

    • 55
    • 63

    Partly Sunny

    • 55
    • 63

    Mostly Sunny

Today 25 Apr Catalina and Santa Barbara Islands

Mostly cloudy in the morning then partly cloudy. Highs in the mid 50s to mid 60s. Areas of west Winds 15 to 25 Mph in the afternoon.

Tonight 25 Apr Catalina and Santa Barbara Islands

Mostly cloudy. Lows in the upper 40s to mid 50s.

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  • Temperature Forecast NOAA

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San Clemente Island - Northwest Harbor Temperature Statistics

April Temperature

San Clemente Island NALF (0.6 miles)

  • Lowest 8 April, 2024

    51.1 °F

  • Average April

    60.1 °F

  • Highest 9 April, 2024

    73 °F

Climate (2019–Present)

San Clemente Island NALF (0.6 miles)

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  • Average Low 2019–2024

    56.5 °F

  • Average 2019–2024

    61 °F

  • Average High 2019–2024

    66 °F
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