Santa Monica Climate by Month
Santa Monica, California, United States
Mild all year, with little rain, mostly from December to March.
Mild all year, with little rain, mostly from December to March: that's Santa Monica's climate in short. September is the warmest month, with highs around 78°F (26°C); February is the coolest at 67°F (19°C), and nights dip to 49°F (10°C). It gets only 11 in (290 mm) of rain a year. May to September are almost completely dry.
- Warmest month
- 78°F(26°C)
- Average high, September
- Coldest nights
- 49°F(10°C)
- Average low, January
- Rain per year
- 11 in(290 mm)
- Wettest: February
- Humidity
- 58%
- Sunniest: July
Best and worst months in Santa Monica
Best for weatherThe most comfortable weather comes in July, August and October, with highs around 76°F (24°C) and almost no rain.
Least pleasantJanuary and February are the least pleasant; February is the coldest, with highs of only 67°F (19°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Santa Monica weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 68°F(20°C) | 49°F(10°C) | 2.6 in(65 mm) | 54% | 2.7 |
| FebFebruary | 67°F(19°C) | 50°F(10°C) | 2.6 in(66 mm) | 54% | 3.3 |
| MarMarch | 68°F(20°C) | 51°F(11°C) | 1.8 in(45 mm) | 58% | 4.7 |
| AprApril | 69°F(21°C) | 52°F(11°C) | 0.8 in(21 mm) | 60% | 6.0 |
| MayMay | 70°F(21°C) | 56°F(13°C) | 0.1 in(3 mm) | 66% | 6.3 |
| JunJune | 72°F(22°C) | 58°F(15°C) | 0.0 in(1 mm) | 67% | 6.6 |
| JulJulyBest | 75°F(24°C) | 61°F(16°C) | 0.0 in(0 mm) | 68% | 6.6 |
| AugAugustBest | 77°F(25°C) | 62°F(17°C) | 0.0 in(0 mm) | 64% | 6.5 |
| SepSeptember | 78°F(26°C) | 62°F(17°C) | 0.1 in(2 mm) | 60% | 5.4 |
| OctOctoberBest | 76°F(24°C) | 58°F(15°C) | 0.4 in(10 mm) | 53% | 4.0 |
| NovNovember | 72°F(22°C) | 53°F(12°C) | 1.1 in(28 mm) | 47% | 3.2 |
| DecDecember | 68°F(20°C) | 50°F(10°C) | 1.9 in(49 mm) | 47% | 2.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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