Santa Ana, California Climate by Month
Santa Ana, California, United States
Warm summers and mild winters, with little rain, mostly from December to March.
The climate in Santa Ana is one of warm summers and mild winters, with little rain, mostly from December to March. Expect highs of 85°F (29°C) in August and 69°F (21°C) in December, with the coldest nights (December) near 46°F (8°C). It gets only 12 in (295 mm) of rain a year. May to September are almost completely dry.
- Warmest month
- 85°F(29°C)
- Average high, August
- Coldest nights
- 46°F(8°C)
- Average low, December
- Rain per year
- 12 in(295 mm)
- Wettest: February
- Humidity
- 56%
- Sunniest: June
Best and worst months in Santa Ana
Best for weatherThe most comfortable weather comes in April, May and November, with highs around 75°F (24°C) and about 0.6 in (16 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; February is the coldest, with highs of only 70°F (21°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 May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Santa Ana weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 70°F(21°C) | 47°F(8°C) | 2.4 in(61 mm) | 54% | 2.8 |
| FebFebruary | 70°F(21°C) | 48°F(9°C) | 2.8 in(70 mm) | 53% | 3.3 |
| MarMarch | 71°F(22°C) | 50°F(10°C) | 1.8 in(46 mm) | 56% | 4.8 |
| AprAprilBest | 74°F(23°C) | 52°F(11°C) | 0.8 in(21 mm) | 56% | 5.9 |
| MayMayBest | 75°F(24°C) | 57°F(14°C) | 0.2 in(5 mm) | 60% | 6.2 |
| JunJune | 78°F(26°C) | 60°F(16°C) | 0.1 in(2 mm) | 61% | 6.7 |
| JulJuly | 82°F(28°C) | 64°F(18°C) | 0.0 in(1 mm) | 61% | 6.6 |
| AugAugust | 85°F(29°C) | 65°F(18°C) | 0.0 in(1 mm) | 58% | 6.5 |
| SepSeptember | 84°F(29°C) | 63°F(17°C) | 0.2 in(4 mm) | 57% | 5.4 |
| OctOctober | 80°F(27°C) | 58°F(14°C) | 0.5 in(12 mm) | 54% | 4.0 |
| NovNovemberBest | 75°F(24°C) | 51°F(10°C) | 0.9 in(22 mm) | 51% | 3.2 |
| DecDecember | 69°F(21°C) | 46°F(8°C) | 2.0 in(50 mm) | 50% | 2.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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