Click on a day for an hourly weather forecast
The temperatures in Santa Ana in October are comfortable with low of 17°C and and high up to 25°C.
You can expect a few rainy days in Santa Ana 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 Santa Ana in October 2025.
If you’re planning to visit Santa Ana in the near future, we highly recommend that you review the 14 day weather forecast for Santa Ana before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 20° / 11° | 3 | 28 | 0 | 70 mm | Good | Santa Ana in January |
| February | 19° / 11° | 2 | 26 | 0 | 68 mm | Good | Santa Ana in February |
| March | 20° / 11° | 2 | 29 | 0 | 44 mm | Good | Santa Ana in March |
| April | 21° / 13° | 1 | 29 | 0 | 23 mm | Good | Santa Ana in April |
| May | 22° / 14° | 1 | 30 | 0 | 15 mm | Good | Santa Ana in May |
| June | 25° / 16° | 0 | 30 | 0 | 4 mm | Perfect | Santa Ana in June |
| July | 27° / 19° | 1 | 30 | 0 | 25 mm | Perfect | Santa Ana in July |
| August | 28° / 20° | 1 | 30 | 0 | 19 mm | Perfect | Santa Ana in August |
| September | 28° / 20° | 1 | 29 | 0 | 15 mm | Perfect | Santa Ana in September |
| October | 25° / 17° | 1 | 30 | 0 | 23 mm | Perfect | Santa Ana in October |
| November | 22° / 14° | 1 | 29 | 0 | 31 mm | Good | Santa Ana in November |
| December | 19° / 11° | 3 | 28 | 0 | 82 mm | Good | Santa Ana in December |