Click on a day for an hourly weather forecast
The temperatures in Slough in August are usually low and can range between 11°C and 19°C.
You can expect about 3 to 8 days of rain in Slough during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Slough in August 2025.
If you’re planning to visit Slough in the near future, we highly recommend that you review the 14 day weather forecast for Slough before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 1° | 6 | 19 | 5 | 47 mm | Awful | Slough in January |
| February | 7° / 1° | 7 | 17 | 5 | 43 mm | Bad | Slough in February |
| March | 10° / 2° | 5 | 24 | 2 | 40 mm | Bad | Slough in March |
| April | 12° / 3° | 4 | 25 | 1 | 38 mm | Ok | Slough in April |
| May | 15° / 6° | 5 | 26 | 0 | 53 mm | Good | Slough in May |
| June | 18° / 9° | 5 | 25 | 0 | 62 mm | Good | Slough in June |
| July | 19° / 11° | 4 | 27 | 0 | 59 mm | Good | Slough in July |
| August | 19° / 11° | 5 | 26 | 0 | 57 mm | Good | Slough in August |
| September | 17° / 9° | 3 | 27 | 0 | 36 mm | Good | Slough in September |
| October | 13° / 7° | 5 | 26 | 0 | 48 mm | Ok | Slough in October |
| November | 9° / 4° | 7 | 23 | 1 | 58 mm | Bad | Slough in November |
| December | 7° / 2° | 6 | 22 | 2 | 53 mm | Bad | Slough in December |