Typical temperatures for beaches along the Pacific Ocean in California during the month of September are listed below in degrees Fahrenheit and Celsius.
You can jump to a separate table for each region of the state: Southern Coast, Los Angeles Area, Central Coast, San Francisco Area and Northern Coast.
The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.
Southern California Coast
Average temperatures for September
| High °F |
Low °F |
Place |
High °C |
Low °C |
| 75 |
62 |
Imperial Beach |
24 |
17 |
| 81 |
59 |
Laguna Beach |
27 |
15 |
| 74 |
64 |
Newport Beach |
23 |
18 |
| 71 |
64 |
Oceanside |
22 |
18 |
| 77 |
66 |
San Diego |
25 |
19 |
| 78 |
63 |
Santa Catalina Island |
26 |
17 |
Los Angeles Area
Average daily temperatures in September
| High °F |
Low °F |
Place |
High °C |
Low °C |
| 82 |
64 |
Long Beach |
28 |
18 |
| 74 |
60 |
Oxnard |
23 |
15 |
| 73 |
57 |
Point Mugu |
23 |
14 |
| 70 |
61 |
Santa Monica |
21 |
16 |
Central California Coast
September temperatures: daily averages
| High °F |
Low °F |
Place |
High °C |
Low °C |
| 77 |
50 |
Big Sur State Park |
25 |
10 |
| 75 |
55 |
Lompoc |
24 |
13 |
| 68 |
54 |
Monterey |
20 |
12 |
| 72 |
56 |
Morro Bay |
22 |
13 |
| 72 |
54 |
Pismo Beach |
22 |
12 |
| 74 |
54 |
Salinas |
24 |
12 |
| 78 |
60 |
Santa Barbara |
25 |
15 |
San Francisco Area
Average temperatures for September
| High °F |
Low °F |
Place |
High °C |
Low °C |
| 66 |
51 |
Bodega Bay |
19 |
11 |
| 66 |
51 |
Half Moon Bay |
19 |
11 |
| 65 |
55 |
San Francisco, Fort Funston |
18 |
13 |
| 72 |
49 |
San Gregorio |
22 |
10 |
| 77 |
53 |
Santa Cruz |
25 |
12 |
Northern California Coast
Normal temperatures for September
| High °F |
Low °F |
Place |
High °C |
Low °C |
| 65 |
50 |
Crescent City |
18 |
10 |
| 64 |
51 |
Eureka |
18 |
10 |
| 65 |
49 |
Fort Bragg |
18 |
9 |
| 67 |
48 |
Fort Ross State Park |
20 |
9 |
| 67 |
50 |
Klamath |
19 |
10 |
| 70 |
54 |
Shelter Cove |
21 |
12 |