Click on a day for an hourly weather forecast
The weather in Helsinki in December is very cold with temperatures between -1°C and 1°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Helsinki during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Helsinki is going to experience quite a number of days of snow during December. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!
Our weather forecast can give you a great sense of what weather to expect in Helsinki in December 2024.
If you’re planning to visit Helsinki in the near future, we highly recommend that you review the 14 day weather forecast for Helsinki before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -5° | 4 | 8 | 19 | 60 mm | Awful | Helsinki in January |
| February | -2° / -5° | 4 | 7 | 17 | 51 mm | Awful | Helsinki in February |
| March | 1° / -3° | 7 | 10 | 15 | 46 mm | Awful | Helsinki in March |
| April | 5° / 2° | 6 | 18 | 6 | 42 mm | Awful | Helsinki in April |
| May | 11° / 7° | 5 | 25 | 1 | 60 mm | Ok | Helsinki in May |
| June | 16° / 12° | 6 | 24 | 0 | 83 mm | Good | Helsinki in June |
| July | 20° / 16° | 6 | 25 | 0 | 106 mm | Good | Helsinki in July |
| August | 19° / 15° | 7 | 24 | 0 | 135 mm | Ok | Helsinki in August |
| September | 15° / 12° | 6 | 24 | 0 | 91 mm | Good | Helsinki in September |
| October | 9° / 6° | 8 | 20 | 3 | 90 mm | Awful | Helsinki in October |
| November | 5° / 3° | 7 | 18 | 5 | 76 mm | Awful | Helsinki in November |
| December | 1° / -1° | 7 | 11 | 14 | 72 mm | Awful | Helsinki in December |