Click on a day for an hourly weather forecast
The temperatures in Portrush in May are quite cold with temperatures between 7°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Portrush. 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 Portrush in May 2025.
If you’re planning to visit Portrush in the near future, we highly recommend that you review the 14 day weather forecast for Portrush before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 2° | 11 | 14 | 6 | 98 mm | Awful | Portrush in January |
| February | 7° / 2° | 10 | 11 | 7 | 105 mm | Awful | Portrush in February |
| March | 9° / 3° | 10 | 17 | 4 | 89 mm | Awful | Portrush in March |
| April | 11° / 4° | 7 | 21 | 2 | 77 mm | Awful | Portrush in April |
| May | 13° / 7° | 9 | 22 | 0 | 95 mm | Bad | Portrush in May |
| June | 16° / 9° | 8 | 22 | 0 | 117 mm | Ok | Portrush in June |
| July | 17° / 11° | 9 | 22 | 0 | 131 mm | Ok | Portrush in July |
| August | 17° / 11° | 10 | 21 | 0 | 129 mm | Ok | Portrush in August |
| September | 15° / 9° | 7 | 23 | 0 | 85 mm | Ok | Portrush in September |
| October | 12° / 7° | 10 | 21 | 0 | 118 mm | Bad | Portrush in October |
| November | 9° / 5° | 10 | 19 | 1 | 112 mm | Bad | Portrush in November |
| December | 6° / 3° | 10 | 17 | 3 | 97 mm | Awful | Portrush in December |