Click on a day for an hourly weather forecast
The temperatures in Watford in May are quite cold with temperatures between 8°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Watford 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 Watford in May 2025.
If you’re planning to visit Watford in the near future, we highly recommend that you review the 14 day weather forecast for Watford before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 8 | 20 | 3 | 73 mm | Awful | Watford in January |
| February | 8° / 3° | 8 | 16 | 4 | 70 mm | Awful | Watford in February |
| March | 11° / 4° | 5 | 25 | 1 | 58 mm | Ok | Watford in March |
| April | 14° / 6° | 4 | 25 | 1 | 49 mm | Good | Watford in April |
| May | 17° / 8° | 5 | 26 | 0 | 65 mm | Good | Watford in May |
| June | 20° / 11° | 5 | 25 | 0 | 93 mm | Good | Watford in June |
| July | 22° / 14° | 5 | 26 | 0 | 75 mm | Good | Watford in July |
| August | 22° / 14° | 5 | 26 | 0 | 77 mm | Good | Watford in August |
| September | 20° / 12° | 4 | 26 | 0 | 50 mm | Good | Watford in September |
| October | 15° / 9° | 6 | 25 | 0 | 77 mm | Good | Watford in October |
| November | 11° / 6° | 7 | 23 | 0 | 72 mm | Bad | Watford in November |
| December | 8° / 4° | 8 | 21 | 2 | 86 mm | Awful | Watford in December |