Best time to visit Irvine
United States · 20-year averages
June is the best month in Irvine, scoring 100 out of 100, with February the weakest at 76. The 24-point spread means timing is worth planning around without being decisive. The good window runs May to November — 7 months within ten points of the best.
September is the warmest month at 23.4 °C and February the coolest at 17 °C — a 6.4 °C spread across the year.
There is a real wet season here. January, February, March and December carry the rain — up to 7 wet days in a month — while May to September drop as low as 0. That 7-day gap is the biggest single difference between a good month and a bad one in Irvine, and it moves further than the temperature does.
Daylight runs from 9.9 hours in winter to 14.4 in summer, enough to notice on a sightseeing itinerary.
The three strongest months are June, July, August. The one to think twice about is February. Each month below has its own page with rainfall reliability, extremes, daylight and crowd levels.
Irvine month by month
| Month | High °C | Low °C | Rain days | Daylight h | Score | Verdict |
|---|---|---|---|---|---|---|
| January | 17.6 | 13 | 5 | 10.1 | 82 | Prime time |
| February | 17 | 12.7 | 7 | 11 | 76 | A good month |
| March | 17.4 | 13.1 | 5 | 11.9 | 82 | Prime time |
| April | 17.8 | 13.5 | 3 | 13 | 87 | Prime time |
| May | 18.7 | 14.7 | 1 | 13.9 | 94 | Prime time |
| June | 20.1 | 16 | 0 | 14.4 | 100 | Prime time |
| July | 22.4 | 18.2 | 0 | 14.2 | 100 | Prime time |
| August | 23.1 | 18.9 | 0 | 13.4 | 100 | Prime time |
| September | 23.4 | 19 | 0 | 12.4 | 100 | Prime time |
| October | 22.2 | 17.7 | 2 | 11.4 | 97 | Prime time |
| November | 20.2 | 15.6 | 3 | 10.4 | 94 | Prime time |
| December | 17.5 | 13.3 | 6 | 9.9 | 80 | Prime time |
Planning the rest of the trip
- Flight time to Irvine how long you are actually in the air
- Irvine time zone and the difference from home
- Days until your trip count down to the departure date
- Gyms & clubs in Irvine keep training while you are there