Click on a day for an hourly weather forecast
The temperatures in Brecon in May are quite cold with temperatures between 6°C and 14°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Brecon. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Brecon in May 2025.
If you’re planning to visit Brecon in the near future, we highly recommend that you review the 14 day weather forecast for Brecon before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 10 | 13 | 8 | 144 mm | Awful | Brecon in January |
| February | 6° / 2° | 9 | 12 | 8 | 123 mm | Awful | Brecon in February |
| March | 8° / 2° | 8 | 18 | 5 | 88 mm | Awful | Brecon in March |
| April | 11° / 4° | 6 | 23 | 1 | 73 mm | Ok | Brecon in April |
| May | 14° / 6° | 8 | 23 | 0 | 103 mm | Ok | Brecon in May |
| June | 16° / 9° | 7 | 23 | 0 | 118 mm | Ok | Brecon in June |
| July | 18° / 11° | 7 | 24 | 0 | 110 mm | Ok | Brecon in July |
| August | 18° / 11° | 7 | 24 | 0 | 109 mm | Ok | Brecon in August |
| September | 16° / 9° | 6 | 24 | 0 | 89 mm | Good | Brecon in September |
| October | 12° / 7° | 9 | 22 | 0 | 137 mm | Bad | Brecon in October |
| November | 9° / 4° | 10 | 18 | 2 | 143 mm | Awful | Brecon in November |
| December | 6° / 3° | 11 | 15 | 5 | 156 mm | Awful | Brecon in December |