Click on a day for an hourly weather forecast
The temperatures in Stykkisholmur in September are quite cold with temperatures between 6°C and 9°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Stykkisholmur. 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.
Please note that Stykkisholmur can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Stykkisholmur in September 2025.
If you’re planning to visit Stykkisholmur in the near future, we highly recommend that you review the 14 day weather forecast for Stykkisholmur before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -2° | 10 | 4 | 18 | 109 mm | Awful | Stykkisholmur in January |
| February | 1° / -2° | 9 | 5 | 15 | 96 mm | Awful | Stykkisholmur in February |
| March | 1° / -2° | 9 | 5 | 17 | 105 mm | Awful | Stykkisholmur in March |
| April | 4° / 0° | 9 | 10 | 11 | 75 mm | Awful | Stykkisholmur in April |
| May | 7° / 3° | 9 | 18 | 4 | 71 mm | Awful | Stykkisholmur in May |
| June | 11° / 7° | 5 | 24 | 0 | 53 mm | Ok | Stykkisholmur in June |
| July | 12° / 8° | 6 | 25 | 0 | 52 mm | Ok | Stykkisholmur in July |
| August | 12° / 8° | 7 | 24 | 0 | 79 mm | Bad | Stykkisholmur in August |
| September | 9° / 6° | 10 | 19 | 1 | 119 mm | Bad | Stykkisholmur in September |
| October | 5° / 3° | 11 | 14 | 6 | 95 mm | Awful | Stykkisholmur in October |
| November | 2° / 0° | 10 | 8 | 12 | 88 mm | Awful | Stykkisholmur in November |
| December | 0° / -2° | 9 | 6 | 16 | 85 mm | Awful | Stykkisholmur in December |