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Rovaniemi in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Rovaniemi in September will be like? Take a look at our weather guide for Rovaniemi, based on historical data.
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September

Weather in Rovaniemi in September 2025

OK Weather
Chill
🌧️
Rainy
If you plan to visit Rovaniemi in September, the weather is typically alright, with an average high temperature of +52°F during the day and approximately 2 sunny days. Expect some rainy, though, as there are typically 15 rainy days in the month and around 54 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+52°F
Avg. max. temperature
+19°F
Min.
+73°F
Max.
54 mm
Total precipitation
83%
Avg. humidity
2 m/s
Avg. wind
2 ☀️
Sunny Days
12 ⛅️
Cloudy
15 🌦
Rainy
Our opinion: Rovaniemi has OK weather in September.

Average temperature in Rovaniemi in September

Here are the expected maximum, average and minimum temperatures in Rovaniemi for September based on the historical data.
Last Year
Historical Data

Going from a maximum of +70°F during the day to a minimum of +30°F during the night, the temperature in September averages around +57°F.

The average maximum temperature goes down 14% by the end of the month, compared with the beginning of the month, from +59°F to +54°F.

Is Rovaniemi warm or cold in September?

Rovaniemi is typically chill in September.

Maximum temperatures go down compared to the previous month from +63°F to +52°F. The minimum temperature also goes down from +48°F to +39°F.

Pack a jumper and a jacket as there will be cooler temperatures.

Take a look at how September is compared to other months in Rovaniemi:

Climate in Rovaniemi in September

Rovaniemi weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+63°F+52°F+37°F
Min. temperature
+30°F+19°F-11°F
Max. temperature
+84°F+73°F+57°F
Rainfall
76 mm54 mm34 mm
Wind
2 m/s2 m/s3 m/s
Humidity
77%83%89%
Air pressure
1010 HPa1010 HPa1008 HPa
Sunny days
323
Cloudy days
101213
Rainy days
17158
Snowy days
018

September weather is still as ok as in August. It’s getting colder in September. From +63°F in the day, the average maximum temperature lowers to +52°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 76 mm to 54 mm. Humidity rises from 77% to 83%. 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

Wind speed in Rovaniemi in September based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Rovaniemi is gradually decreasing during September, going from 5 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Rovaniemi based on historical data.
Last Year
Historical Data
Typically, there is a 60% chance of rain on an average day in September, with total rainfall of approximately 142 mm. The maximum amount of rainfall per day is around 24 mm, which is considered light rain. September is a pretty wet month with over 18 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Rovaniemi wettest month is July, where a typical day has a 55% chance of precipitation and 79 mm of rainfall per day. January, on the other hand, is the driest month with a mere 0% chance of precipitation and 0 mm of rainfall per day.

How was the weather last September in Rovaniemi?

This is the weather in Rovaniemi in September 2023:
1 September
☁️
+60°F
2 September
☁️
+63°F
3 September
☁️
+62°F
4 September
🌧️
+60°F
5 September
☀️
+58°F
6 September
☀️
+58°F
7 September
☀️
+59°F
8 September
☀️
+64°F
9 September
☀️
+70°F
10 September
☁️
+60°F
11 September
☀️
+61°F
12 September
🌧️
+60°F
13 September
🌧️
+53°F
14 September
☀️
+51°F
15 September
☀️
+51°F
16 September
☁️
+51°F
17 September
🌧️
+50°F
18 September
☀️
+50°F
19 September
🌧️
+49°F
20 September
🌧️
+46°F
21 September
🌧️
+46°F
22 September
☁️
+64°F
23 September
🌧️
+61°F
24 September
☁️
+50°F
25 September
☁️
+55°F
26 September
☀️
+60°F
27 September
☀️
+54°F
28 September
☀️
+56°F
29 September
🌧️
+54°F
30 September
🌧️
+54°F
In September 2023 Rovaniemi had 12 sunny days, 8 cloudy days, and 10 rainy days. The average maximum temperature was +57°F, with an absolute maximum of +70°F and a minimum of +46°F. The average humidity was 90%, with a maximum of 100% and a minimum of 52%. The average wind speed was 4 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Rovaniemi climate has changed over the last 43 years.

The climate in Rovaniemi in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1985 (+35°F) and the highest in 2020 (+44°F). The driest year was 1997 with only 206 mm of rainfall, and the wettest year was 2020 with 551 mm.

FAQ

Frequently asked questions about the weather in Rovaniemi in September:

Is September a good time to visit Rovaniemi?

It’s always a good time to visit Rovaniemi, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Rovaniemi in September?

Not really, September is not the best time to sunbathe, unless you visit a local solarium.

Is Rovaniemi rainy in September?

Rovaniemi is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Rovaniemi in September?

Usually, it’s not very sunny in Rovaniemi in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Finland

Check out the weather for other cities in Finland.

Monthly weather in Rovaniemi

Source of the data

For this page, we’ve looked at the typical weather in Rovaniemi, 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.