Where is the sea warmest in California in September?

Carpinteria Beach in United States has the warmest sea in California in September, averaging about 27.0 °C. Morro Strand (27.0 °C) and San Simeon State Beach follow close behind.

How many beaches in California are warm enough to swim in September?

25 of the top 25 ranked beaches in California average 22 °C or more in September, which most swimmers find comfortable without a wetsuit.

How are these September sea temperatures calculated?

Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical September rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

Seasonal ranking

Warmest sea temperature in California in September

Where the sea is warmest across California during September, ranked by long-term monthly average water temperature. Carpinteria Beach (California, United States) tops the list at around 27°C. Open any spot for today's live water temperature and a 7-day swim forecast.

1
Carpinteria Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
2
Morro Strand
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
3
San Simeon State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
4
Bolinas Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
5
Muir Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
6
Pacifica State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
7
Ocean Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
8
Gray Whale Cove
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
9
Montara State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
10
Pescadero State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
11
Manresa State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
12
Sunset State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
13
Windansea Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
14
Rodeo Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
15
Drakes Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
16
Bodega Bay Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
17
Goat Rock Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
18
Manchester State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
19
Big River Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
20
Van Damme Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
21
San Gregorio State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
22
Waddell Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
23
Natural Bridges State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
24
New Brighton State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average
25
Rio Del Mar State Beach
California · United States · Pacific Ocean
Warm — comfortable swimming
27°C
September average

Warmest sea in September elsewhere

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California in September — frequently asked questions

Where is the sea warmest in California in September?: Carpinteria Beach in United States has the warmest sea in California in September, averaging about 27.0 °C. Morro Strand (27.0 °C) and San Simeon State Beach follow close behind.
How many beaches in California are warm enough to swim in September?: 25 of the top 25 ranked beaches in California average 22 °C or more in September, which most swimmers find comfortable without a wetsuit.
How are these September sea temperatures calculated?: Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical September rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

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