Irvine, California Climate by Month
Irvine, California, United States
Warm summers and mild winters, with little rain, mostly from December to March.
Irvine has warm summers and mild winters, with little rain, mostly from December to March. August is the warmest month, with highs around 83°F (28°C); December is the coolest at 68°F (20°C), and nights dip to 45°F (7°C). It gets only 11 in (283 mm) of rain a year. May to September are almost completely dry.
- Warmest month
- 83°F(28°C)
- Average high, August
- Coldest nights
- 45°F(7°C)
- Average low, December
- Rain per year
- 11 in(283 mm)
- Wettest: February
- Humidity
- 58%
- Sunniest: July
Best and worst months in Irvine
Best for weatherThe most comfortable weather comes in May, June and November, with highs around 75°F (24°C) and almost no rain.
Least pleasantFebruary and December are the least pleasant; February is the coldest, with highs of only 69°F (20°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)
Irvine weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 69°F(20°C) | 46°F(8°C) | 2.3 in(59 mm) | 56% | 2.8 |
| FebFebruary | 69°F(20°C) | 47°F(8°C) | 2.7 in(68 mm) | 55% | 3.3 |
| MarMarch | 70°F(21°C) | 49°F(9°C) | 1.8 in(45 mm) | 63% | 4.8 |
| AprApril | 73°F(23°C) | 52°F(11°C) | 0.7 in(19 mm) | 57% | 5.9 |
| MayMayBest | 74°F(23°C) | 56°F(13°C) | 0.2 in(5 mm) | 62% | 6.3 |
| JunJuneBest | 77°F(25°C) | 60°F(15°C) | 0.1 in(2 mm) | 63% | 6.7 |
| JulJuly | 81°F(27°C) | 63°F(17°C) | 0.0 in(0 mm) | 63% | 6.7 |
| AugAugust | 83°F(28°C) | 64°F(18°C) | 0.0 in(1 mm) | 61% | 6.5 |
| SepSeptember | 83°F(28°C) | 62°F(17°C) | 0.2 in(4 mm) | 59% | 5.4 |
| OctOctober | 79°F(26°C) | 57°F(14°C) | 0.4 in(10 mm) | 56% | 4.1 |
| NovNovemberBest | 74°F(23°C) | 50°F(10°C) | 0.8 in(21 mm) | 53% | 3.2 |
| DecDecember | 68°F(20°C) | 45°F(7°C) | 1.9 in(49 mm) | 51% | 2.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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