Click on a day for an hourly weather forecast
The temperatures in Irvine in October are comfortable with low of 17°C and and high up to 23°C.
You can expect a few rainy days in Irvine during October, but usually the weather is comfortable in October.
Our weather forecast can give you a great sense of what weather to expect in Irvine in October 2025.
If you’re planning to visit Irvine in the near future, we highly recommend that you review the 14 day weather forecast for Irvine before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 18° / 11° | 3 | 28 | 0 | 64 mm | Good | Irvine in January |
| February | 18° / 11° | 3 | 26 | 0 | 61 mm | Good | Irvine in February |
| March | 18° / 11° | 2 | 29 | 0 | 46 mm | Good | Irvine in March |
| April | 19° / 12° | 1 | 29 | 0 | 22 mm | Good | Irvine in April |
| May | 20° / 14° | 1 | 30 | 0 | 22 mm | Good | Irvine in May |
| June | 22° / 15° | 0 | 30 | 0 | 7 mm | Good | Irvine in June |
| July | 24° / 18° | 2 | 29 | 0 | 37 mm | Perfect | Irvine in July |
| August | 25° / 19° | 1 | 30 | 0 | 29 mm | Perfect | Irvine in August |
| September | 26° / 19° | 1 | 29 | 0 | 20 mm | Perfect | Irvine in September |
| October | 23° / 17° | 1 | 30 | 0 | 29 mm | Perfect | Irvine in October |
| November | 21° / 14° | 1 | 29 | 0 | 35 mm | Good | Irvine in November |
| December | 18° / 11° | 3 | 28 | 0 | 87 mm | Good | Irvine in December |