Click on a day for an hourly weather forecast
The temperatures in Irvine in August are comfortable with low of 19°C and and high up to 25°C.
You can expect a few rainy days in Irvine during August, but usually the weather is comfortable in August.
Our weather forecast can give you a great sense of what weather to expect in Irvine in August 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 |