Click on a day for an hourly weather forecast
The temperatures in Coleraine in August are usually low and can range between 12°C and 16°C.
You can expect rain for roughly half of the month of August in Coleraine. 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 Coleraine in August 2025.
If you’re planning to visit Coleraine in the near future, we highly recommend that you review the 14 day weather forecast for Coleraine before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 4° | 12 | 16 | 3 | 122 mm | Awful | Coleraine in January |
| February | 7° / 4° | 11 | 14 | 4 | 119 mm | Awful | Coleraine in February |
| March | 9° / 4° | 10 | 20 | 2 | 105 mm | Awful | Coleraine in March |
| April | 10° / 6° | 8 | 22 | 1 | 84 mm | Bad | Coleraine in April |
| May | 12° / 8° | 9 | 22 | 0 | 107 mm | Bad | Coleraine in May |
| June | 15° / 10° | 9 | 21 | 0 | 122 mm | Ok | Coleraine in June |
| July | 16° / 12° | 10 | 21 | 0 | 149 mm | Ok | Coleraine in July |
| August | 16° / 12° | 10 | 21 | 0 | 142 mm | Ok | Coleraine in August |
| September | 15° / 11° | 8 | 22 | 0 | 107 mm | Ok | Coleraine in September |
| October | 13° / 9° | 10 | 21 | 0 | 134 mm | Bad | Coleraine in October |
| November | 10° / 7° | 10 | 20 | 0 | 133 mm | Bad | Coleraine in November |
| December | 8° / 5° | 11 | 18 | 2 | 120 mm | Awful | Coleraine in December |