Click on a day for an hourly weather forecast
The temperatures in Porvoo in October are quite cold with temperatures between 5°C and 8°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Porvoo. 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.
You can expect a few days of snow in Porvoo during October. It’s important to get out your snow boots and warm mittens to stay warm while you explore Porvoo.
Our weather forecast can give you a great sense of what weather to expect in Porvoo in October 2025.
If you’re planning to visit Porvoo in the near future, we highly recommend that you review the 14 day weather forecast for Porvoo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -6° | 5 | 6 | 21 | 51 mm | Awful | Porvoo in January |
| February | -2° / -6° | 4 | 6 | 19 | 44 mm | Awful | Porvoo in February |
| March | 1° / -4° | 6 | 8 | 18 | 47 mm | Awful | Porvoo in March |
| April | 7° / 1° | 5 | 17 | 8 | 39 mm | Bad | Porvoo in April |
| May | 14° / 7° | 4 | 26 | 1 | 39 mm | Good | Porvoo in May |
| June | 18° / 11° | 5 | 25 | 0 | 64 mm | Good | Porvoo in June |
| July | 22° / 14° | 5 | 26 | 0 | 82 mm | Good | Porvoo in July |
| August | 20° / 14° | 5 | 26 | 0 | 100 mm | Good | Porvoo in August |
| September | 15° / 10° | 6 | 24 | 0 | 86 mm | Good | Porvoo in September |
| October | 8° / 5° | 9 | 19 | 3 | 96 mm | Awful | Porvoo in October |
| November | 4° / 1° | 8 | 14 | 8 | 80 mm | Awful | Porvoo in November |
| December | 0° / -3° | 6 | 8 | 17 | 60 mm | Awful | Porvoo in December |