Click on a day for an hourly weather forecast
The temperatures in Oceanside in August are comfortable with low of 19°C and and high up to 25°C.
You can expect a few rainy days in Oceanside 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 Oceanside in August 2025.
If you’re planning to visit Oceanside in the near future, we highly recommend that you review the 14 day weather forecast for Oceanside before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 19° / 12° | 2 | 29 | 0 | 37 mm | Good | Oceanside in January |
| February | 18° / 11° | 2 | 27 | 0 | 39 mm | Good | Oceanside in February |
| March | 18° / 12° | 1 | 30 | 0 | 26 mm | Good | Oceanside in March |
| April | 19° / 13° | 1 | 30 | 0 | 13 mm | Good | Oceanside in April |
| May | 20° / 14° | 0 | 31 | 0 | 14 mm | Good | Oceanside in May |
| June | 22° / 16° | 0 | 30 | 0 | 7 mm | Good | Oceanside in June |
| July | 24° / 18° | 1 | 30 | 0 | 26 mm | Perfect | Oceanside in July |
| August | 25° / 19° | 1 | 30 | 0 | 14 mm | Perfect | Oceanside in August |
| September | 26° / 19° | 1 | 29 | 0 | 14 mm | Perfect | Oceanside in September |
| October | 24° / 17° | 1 | 30 | 0 | 12 mm | Perfect | Oceanside in October |
| November | 21° / 15° | 1 | 29 | 0 | 24 mm | Good | Oceanside in November |
| December | 18° / 12° | 2 | 29 | 0 | 39 mm | Good | Oceanside in December |