Click on a day for an hourly weather forecast
The temperatures in Borgarnes in August are quite cold with temperatures between 9°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Borgarnes. 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 Borgarnes in August 2025.
If you’re planning to visit Borgarnes in the near future, we highly recommend that you review the 14 day weather forecast for Borgarnes before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -1° | 10 | 8 | 13 | 138 mm | Awful | Borgarnes in January |
| February | 2° / -1° | 10 | 7 | 12 | 119 mm | Awful | Borgarnes in February |
| March | 3° / -1° | 10 | 7 | 14 | 118 mm | Awful | Borgarnes in March |
| April | 5° / 1° | 11 | 11 | 8 | 101 mm | Awful | Borgarnes in April |
| May | 9° / 4° | 9 | 20 | 3 | 88 mm | Awful | Borgarnes in May |
| June | 12° / 8° | 7 | 23 | 0 | 74 mm | Bad | Borgarnes in June |
| July | 14° / 9° | 7 | 24 | 0 | 82 mm | Ok | Borgarnes in July |
| August | 13° / 9° | 8 | 23 | 0 | 97 mm | Bad | Borgarnes in August |
| September | 10° / 7° | 11 | 18 | 1 | 135 mm | Bad | Borgarnes in September |
| October | 6° / 4° | 11 | 18 | 2 | 111 mm | Awful | Borgarnes in October |
| November | 3° / 1° | 10 | 11 | 9 | 96 mm | Awful | Borgarnes in November |
| December | 1° / -2° | 8 | 11 | 11 | 103 mm | Awful | Borgarnes in December |