Irvine weather in January
January in Irvine averages 67°F by day and 49°F at night, with 2.6 inches of precipitation. It is the 10th-warmest and 2nd-wettest month of the year here.
- Average high
- 67°F+1° vs December
- Average low
- 49°F0 nights below freezing
- Precipitation
- 2.6 in3 days with 0.1 in. or more
- Snow
- 0.0 in0 days at 90°F+
Is January a good time to visit Irvine?
Yes. January is one of the most comfortable months in Irvine by our rule (highs of 62 to 86°F, lows of 42°F or more and under 4.5 inches of precipitation). The most comfortable months overall are January to December.
On January 15 the sun rises at 6:55 am and sets at 5:05 pm, giving 10h 10m of daylight. Daylight all year.
What to pack for Irvine in January
- T-shirts and a light jacket or sweater
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
January nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Irvine | 67°F | 49°F | 2.6 in | |
| Tustin, CA | 4 mi | 67°F | 49°F | 2.6 in |
| Santa Ana, CA | 6 mi | 69°F | 49°F | 2.9 in |
| Newport Beach, CA | 6 mi | 65°F | 50°F | 2.2 in |
| Costa Mesa, CA | 6 mi | 67°F | 49°F | 2.6 in |
| Lake Forest, CA | 8 mi | 68°F | 43°F | 3.1 in |
| Orange, CA | 8 mi | 69°F | 49°F | 2.9 in |
Frequently asked questions
What is the weather like in Irvine in January?
In January, Irvine averages a high of 67°F and a low of 49°F, with 2.6 inches of precipitation (NOAA 1991-2020 normals).
Is January a good time to visit Irvine?
Yes. January is one of Irvine's most comfortable months by our rule: highs between 62°F and 86°F, lows of 42°F or more and modest rain.
Does it snow in Irvine in January?
Rarely. The January snowfall normal is under half an inch.
Before and after: Irvine in December and Irvine in February. All twelve months: Irvine weather by month.
NOAA NCEI 1991-2020 climate normals, station Santa Ana John Wayne Airport, CA, 3.1 miles from the city center; snowfall from Tustin Irvine Rch, CA.