Bonny Doon Beach Weather Forecast

    • 56
    • 60

    Decreasing Clouds

    • 56
    • 61

    Mostly Cloudy

    • 58
    • 66

    Partly Sunny

    • 58
    • 66

    Partly Sunny

    • 57
    • 65

    Partly Sunny

    • 55
    • 64

    Partly Sunny

Today 21 Sep Northern Monterey Bay

Mostly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the upper 60s. Southwest Winds 5 to 10 Mph.

Tonight 21 Sep Northern Monterey Bay

Partly cloudy in the evening then becoming cloudy. Patchy fog. Lows in the mid 50s. Southwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Bonny Doon Beach Temperature Statistics

September Temperature

Watsonville, Watsonville Municipal Airport (21.7 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    66.1 °F

  • Highest 9 September, 2026

    102.7 °F

Climate (2021–2026)

Watsonville, Watsonville Municipal Airport (21.7 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.3 °F
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