Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Santa Monica features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 14 °C (57 °F) and 23 °C (74 °F) through the year, but rarely can drop to 4 °C (39 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 326 mm (12.9 inches) and receives 27 rainy days on the 1 mm (0.04 inches) threshold annually. Santa Monica enjoys an average of 3548 hours of sunshine throughout the year, and daylight varies from 9 hours 54 minutes to 14 hours 22 minutes per day.
The warmest months in Santa Monica are July, August and September, with daily mean temperatures ranging from 22 to 23 °C (72 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 14 °C (57 - 57 °F) throughout the day. On average each year, Santa Monica experiences 97 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 29°C (84°F) |
28°C (83°F) |
27°C (80°F) |
33°C (92°F) |
31°C (88°F) |
33°C (91°F) |
38°C (101°F) |
34°C (93°F) |
37°C (100°F) |
37°C (99°F) |
32°C (89°F) |
27°C (80°F) |
| Mean maximum | 24°C (76°F) |
24°C (75°F) |
25°C (77°F) |
29°C (85°F) |
27°C (82°F) |
29°C (85°F) |
32°C (91°F) |
32°C (89°F) |
33°C (92°F) |
33°C (91°F) |
30°C (86°F) |
24°C (75°F) |
| Average high | 18°C (65°F) |
18°C (65°F) |
19°C (66°F) |
21°C (70°F) |
21°C (70°F) |
24°C (75°F) |
27°C (81°F) |
28°C (82°F) |
27°C (80°F) |
25°C (78°F) |
22°C (72°F) |
18°C (65°F) |
| Daily mean | 14°C (57°F) |
14°C (57°F) |
14°C (58°F) |
17°C (62°F) |
17°C (63°F) |
20°C (68°F) |
22°C (73°F) |
23°C (74°F) |
22°C (72°F) |
20°C (69°F) |
17°C (63°F) |
14°C (57°F) |
| Average low | 10°C (50°F) |
10°C (50°F) |
11°C (51°F) |
13°C (55°F) |
14°C (57°F) |
16°C (61°F) |
19°C (66°F) |
19°C (67°F) |
18°C (65°F) |
16°C (61°F) |
13°C (55°F) |
10°C (50°F) |
| Mean minimum | 5°C (42°F) |
5°C (42°F) |
7°C (44°F) |
10°C (50°F) |
11°C (52°F) |
14°C (57°F) |
16°C (62°F) |
17°C (63°F) |
15°C (59°F) |
12°C (54°F) |
9°C (48°F) |
6°C (43°F) |
| Minimum | 5°C (40°F) |
4°C (39°F) |
6°C (43°F) |
9°C (49°F) |
10°C (50°F) |
13°C (56°F) |
16°C (60°F) |
16°C (61°F) |
14°C (57°F) |
10°C (50°F) |
6°C (44°F) |
5°C (42°F) |
Compare temperature, precipitation, sunshine, UV index in Santa Monica, California, United States with other places around the world.
Santa Monica usually has the most precipitation in January, March and December, with an average of 5 rainy days and 73 mm (2.9 inches) of precipitation per month. The driest months in Santa Monica are June, August and September. On average, 1 mm (0.1 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 68 (2.7) | 53 (2.1) | 71 (2.8) | 15 (0.6) | 10 (0.4) | 1 (0.1) | 2 (0.1) | 1 (0.0) | 2 (0.1) | 7 (0.3) | 17 (0.7) | 80 (3.1) |
| Average precipitation days (≥ 1 mm) | 4 | 5 | 8 | 2 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 5 |
The sunniest months in Santa Monica are June, July and August, when the sun shines an average of 12 hours 0 minutes a day. Least sunny months in Santa Monica: January, February and December receive an average of 7 hours 2 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 187 | 228 | 280 | 314 | 347 | 364 | 380 | 360 | 313 | 291 | 255 | 224 |
| Mean daily daylight hours | 10h 9m | 10h 58m | 11h 59m | 13h 3m | 13h 56m | 14h 22m | 14h 7m | 13h 20m | 12h 19m | 11h 17m | 10h 22m | 9h 54m |
Santa Monica experiences the highest level of ultraviolet (UV) radiation in June, July and September, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Santa Monica UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
Discover in-depth weather details for every month in Santa Monica. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Santa Monica's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.