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The weather in Lahti in October is very cold with temperatures between 3°C and 7°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Lahti. 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 Lahti during October. It’s important to get out your snow boots and warm mittens to stay warm while you explore Lahti.
Our weather forecast can give you a great sense of what weather to expect in Lahti in October 2025.
If you’re planning to visit Lahti in the near future, we highly recommend that you review the 14 day weather forecast for Lahti before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -5° / -9° | 4 | 4 | 24 | 68 mm | Awful | Lahti in January |
| February | -4° / -9° | 3 | 3 | 22 | 62 mm | Awful | Lahti in February |
| March | 0° / -6° | 6 | 6 | 21 | 56 mm | Awful | Lahti in March |
| April | 7° / 0° | 6 | 14 | 10 | 56 mm | Bad | Lahti in April |
| May | 15° / 6° | 6 | 24 | 1 | 67 mm | Good | Lahti in May |
| June | 20° / 10° | 6 | 24 | 0 | 80 mm | Good | Lahti in June |
| July | 22° / 13° | 6 | 25 | 0 | 90 mm | Good | Lahti in July |
| August | 20° / 11° | 4 | 27 | 0 | 68 mm | Good | Lahti in August |
| September | 15° / 8° | 5 | 25 | 0 | 62 mm | Good | Lahti in September |
| October | 7° / 3° | 9 | 18 | 5 | 79 mm | Awful | Lahti in October |
| November | 2° / -1° | 7 | 13 | 10 | 73 mm | Awful | Lahti in November |
| December | -2° / -5° | 6 | 4 | 22 | 75 mm | Awful | Lahti in December |