San Clemente, California Climate by Month
San Clemente, California, United States
Warm summers and mild winters, with little rain, mostly from December to March.
Warm summers and mild winters, with little rain, mostly from December to March: that's San Clemente's climate in short. Afternoon highs range from 67°F (19°C) in February to 81°F (27°C) in August, and December nights average 45°F (7°C). It gets only 11 in (283 mm) of rain a year. May to October are almost completely dry.
- Warmest month
- 81°F(27°C)
- Average high, August
- Coldest nights
- 45°F(7°C)
- Average low, December
- Rain per year
- 11 in(283 mm)
- Wettest: February
- Humidity
- 62%
- Sunniest: July
Best and worst months in San Clemente
Best for weatherThe most comfortable weather comes in June, July and October, with highs around 77°F (25°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
San Clemente weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 67°F(20°C) | 45°F(7°C) | 2.0 in(52 mm) | 59% | 2.9 |
| FebFebruary | 67°F(19°C) | 46°F(8°C) | 2.4 in(62 mm) | 59% | 3.4 |
| MarMarch | 67°F(20°C) | 47°F(8°C) | 1.7 in(42 mm) | 63% | 4.8 |
| AprApril | 70°F(21°C) | 49°F(10°C) | 0.9 in(23 mm) | 63% | 5.9 |
| MayMay | 72°F(22°C) | 54°F(12°C) | 0.3 in(7 mm) | 67% | 6.2 |
| JunJuneBest | 74°F(24°C) | 57°F(14°C) | 0.1 in(2 mm) | 70% | 6.6 |
| JulJulyBest | 79°F(26°C) | 60°F(16°C) | 0.1 in(2 mm) | 65% | 6.7 |
| AugAugust | 81°F(27°C) | 62°F(16°C) | 0.1 in(2 mm) | 65% | 6.5 |
| SepSeptember | 80°F(27°C) | 60°F(16°C) | 0.2 in(5 mm) | 63% | 5.4 |
| OctOctoberBest | 77°F(25°C) | 56°F(13°C) | 0.4 in(9 mm) | 58% | 4.1 |
| NovNovember | 72°F(22°C) | 49°F(9°C) | 1.0 in(25 mm) | 55% | 3.3 |
| DecDecember | 67°F(20°C) | 45°F(7°C) | 2.0 in(52 mm) | 52% | 2.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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