Weather in Kuusamo in September 2025
Average weather
Average temperature in Kuusamo in September
Going from a maximum of +20°C during the day to a minimum of +2°C during the night, the temperature in September averages around +13°C.
The average maximum temperature goes down 28% by the end of the month, compared with the beginning of the month, from +17°C to +12°C.
Is Kuusamo warm or cold in September?
Kuusamo is typically cool in September.
Maximum temperatures go down compared to the previous month from +16°C to +10°C. The minimum temperature also goes down from +9°C to +4°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how September is compared to other months in Kuusamo:
Climate in Kuusamo in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +16°C | +10°C | +3°C | ||||
| Min. temperature | ||||||
| 0°C | -4°C | -20°C | ||||
| Max. temperature | ||||||
| +29°C | +21°C | +15°C | ||||
| Rainfall | ||||||
| 74 mm | 54 mm | 28 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 82% | 87% | 90% | ||||
| Air pressure | ||||||
| 1011 HPa | 1010 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 3 | 2 | 1 | ||||
| Cloudy days | ||||||
| 9 | 11 | 13 | ||||
| Rainy days | ||||||
| 19 | 16 | 8 | ||||
| Snowy days | ||||||
| 0 | 1 | 10 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +16°C in the day, the average maximum temperature lowers to +10°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 74 mm to 54 mm. Humidity rises from 82% to 87%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 3 sunny days in August to 2 in September.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Kuusamo is gradually decreasing during September, going from 5 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Kuusamo?
Climate Change over Years
The climate in Kuusamo in September has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+1°C) and the highest in 2020 (+6°C). The driest year was 1990 with only 201 mm of rainfall, and the wettest year was 2015 with 481 mm.
FAQ
Is September a good time to visit Kuusamo?
Can you sunbathe in Kuusamo in September?
Is Kuusamo rainy in September?
Is it sunny in Kuusamo in September?
Other cities in Finland
Monthly weather in Kuusamo
Source of the data
For this page, we’ve looked at the typical weather in Kuusamo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.