Monthly climate guide
Rovaniemi weather in September
September in Rovaniemi is typically cool, with average daytime highs around 12°C (53°F) and night-time lows near 6°C (42°F). The month usually brings about 80 mm of rain (some rain) and is often cloudy. Daytime highs are 5°C cooler than August and 9°C warmer than October.
What stands out in September
- There's little difference between day and night (around 6°C).
- It cools down fast from here: October is about 9°C cooler.
- In Rovaniemi, September is early autumn.
- Just 250 km apart, but Rovaniemi runs about 2°C warmer than Ivalo this month.
Avg high
12°C
53°F
Avg low
6°C
42°F
Rainfall
80 mm
some rain
Humidity
91%
relative
Sky
75%
cloud · often cloudy
Rovaniemi weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -10°C / 14°F | -16°C / 3°F | 47 mm | 100% | 77% |
| February | -8°C / 17°F | -14°C / 6°F | 41 mm | 99% | 77% |
| March | -3°C / 26°F | -10°C / 13°F | 44 mm | 99% | 69% |
| April | 2°C / 35°F | -4°C / 24°F | 49 mm | 95% | 72% |
| May | 10°C / 51°F | 2°C / 36°F | 65 mm | 82% | 70% |
| June | 16°C / 60°F | 8°C / 46°F | 93 mm | 79% | 70% |
| July | 19°C / 67°F | 11°C / 52°F | 88 mm | 81% | 67% |
| August | 17°C / 62°F | 9°C / 49°F | 84 mm | 86% | 69% |
| September | 12°C / 53°F | 6°C / 42°F | 80 mm | 91% | 75% |
| October | 3°C / 37°F | -1°C / 30°F | 70 mm | 96% | 81% |
| November | -2°C / 28°F | -7°C / 20°F | 67 mm | 99% | 80% |
| December | -6°C / 21°F | -12°C / 11°F | 67 mm | 99% | 83% |
What to pack for September
- A warm sweater or fleece for layering
- A mid-weight jacket
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Rovaniemi?
Compare the months in the chart above to find your ideal window.
Best time to visit Rovaniemi →Other Finland cities in September
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Rovaniemi weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/finland/rovaniemi/september
<a href="https://weathercompare.eu/weather/finland/rovaniemi/september">Rovaniemi weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/finland/rovaniemi" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Rovaniemi weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/finland/rovaniemi/september">Rovaniemi weather in September</a> – WeatherCompare</p>
Rovaniemi in September: quick answers
Is September a good time to visit Rovaniemi?
September is cool in Rovaniemi, with highs around 12°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Rovaniemi in September?
Average highs are about 12°C (53°F) and average lows about 6°C (42°F), based on 10 years of daily data.
Does it rain a lot in Rovaniemi in September?
Rovaniemi typically gets around 80 mm of rain in September — some rain.
Figures are long-term averages for the area around Rovaniemi (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.