Click on a day for an hourly weather forecast
The temperatures in Slough in May are quite cold with temperatures between 6°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Slough during the month of May. 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 May 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 |