Click on a day for an hourly weather forecast
The temperatures in Kotka in August are comfortable with low of 15°C and and high up to 19°C.
You can expect rain for roughly half of the month of August in Kotka. 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 Kotka in August 2025.
If you’re planning to visit Kotka in the near future, we highly recommend that you review the 14 day weather forecast for Kotka before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -5° | 7 | 4 | 21 | 87 mm | Awful | Kotka in January |
| February | -3° / -6° | 5 | 5 | 19 | 77 mm | Awful | Kotka in February |
| March | 0° / -4° | 8 | 6 | 18 | 69 mm | Awful | Kotka in March |
| April | 4° / 1° | 7 | 14 | 8 | 59 mm | Awful | Kotka in April |
| May | 10° / 7° | 7 | 23 | 1 | 77 mm | Bad | Kotka in May |
| June | 15° / 12° | 7 | 23 | 0 | 90 mm | Ok | Kotka in June |
| July | 19° / 15° | 6 | 25 | 0 | 114 mm | Good | Kotka in July |
| August | 19° / 15° | 8 | 23 | 0 | 162 mm | Ok | Kotka in August |
| September | 15° / 12° | 7 | 23 | 0 | 121 mm | Ok | Kotka in September |
| October | 9° / 6° | 11 | 16 | 4 | 125 mm | Awful | Kotka in October |
| November | 5° / 3° | 11 | 12 | 8 | 109 mm | Awful | Kotka in November |
| December | 1° / -2° | 10 | 5 | 18 | 110 mm | Awful | Kotka in December |