Click on a day for an hourly weather forecast
The temperatures in Karjaa 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 Karjaa. 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 Karjaa in August 2026.
If you’re planning to visit Karjaa in the near future, we highly recommend that you review the 14 day weather forecast for Karjaa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -5° | 7 | 6 | 20 | 86 mm | Awful | Karjaa in January |
| February | -2° / -5° | 6 | 5 | 19 | 76 mm | Awful | Karjaa in February |
| March | 1° / -3° | 8 | 9 | 16 | 65 mm | Awful | Karjaa in March |
| April | 5° / 2° | 6 | 18 | 6 | 54 mm | Awful | Karjaa in April |
| May | 11° / 7° | 6 | 24 | 1 | 71 mm | Ok | Karjaa in May |
| June | 16° / 11° | 6 | 24 | 0 | 92 mm | Good | Karjaa in June |
| July | 20° / 15° | 6 | 25 | 0 | 119 mm | Good | Karjaa in July |
| August | 19° / 15° | 8 | 23 | 0 | 147 mm | Ok | Karjaa in August |
| September | 15° / 12° | 7 | 23 | 0 | 111 mm | Ok | Karjaa in September |
| October | 9° / 6° | 10 | 18 | 3 | 118 mm | Awful | Karjaa in October |
| November | 5° / 3° | 10 | 13 | 6 | 106 mm | Awful | Karjaa in November |
| December | 1° / -1° | 10 | 5 | 16 | 105 mm | Awful | Karjaa in December |