September

Weather in Finland in September: A Traveler’s Guide 🌦️🍂

September marks the transition from summer to autumn in Finland, offering a unique blend of mild temperatures, vibrant fall foliage, and fewer crowds. Whether you’re planning a city break in Helsinki, exploring Lapland’s wilderness, or chasing the northern lights, understanding Finland’s September weather is key to packing smart and enjoying your trip.

Climate Overview

Finland’s climate in September is characterized by cooling temperatures and shorter daylight hours. The month begins with lingering summer warmth but gradually shifts toward crisp autumn conditions. Key averages:
– Temperature: 8–15°C (46–59°F), cooler in the north (Lapland: 3–10°C / 37–50°F).
– Rainfall: 60–80 mm, with 12–15 rainy days.
– Daylight: 12–14 hours early in the month, dropping to 10–12 hours by late September.

For a broader look at Finland’s climate, see our Finland Climate Guide.

Regional Variations

  • Southern Finland (Helsinki, Turku): Mildest region, with occasional sunny days (up to 18°C early September). Evenings are chilly.
  • Central Finland (Tampere, Jyväskylä): Cooler, with faster foliage changes. Lakeside areas may be misty.
  • Lapland (Rovaniemi, Inari): Autumn arrives early! Temperatures near freezing at night, and northern lights become visible by late September.

What to Pack 🧳

  • Layered clothing: Light sweaters, waterproof jackets, and scarves.
  • Footwear: Waterproof shoes for trails and cities.
  • Accessories: Gloves for Lapland; sunglasses for sunny spells.

Travel Tips

✅ Best for: Nature hikes (fewer mosquitoes!), cultural festivals, and aurora spotting in Lapland.
⚠️ Note: Some summer attractions close by mid-September; check ahead.
🌍 Compare: For warmer September destinations, see Greece or Spain.

Events & Activities

  • Helsinki Design Week (early September).
  • Ruska season (Lapland’s fall colors peak late September).
  • Berry/mushroom foraging in forests.

For monthly comparisons, explore August or October weather.

Final Thought: September is ideal for travelers seeking tranquility and autumn’s golden hues. Just pack for variability, and you’ll experience Finland’s serene side! 🍁✨

Basic Information about September

Feature Details
Average Temperature Approximately 10°C to 15°C
Daylight Hours About 12 to 15 hours
Precipitation Moderate rainfall, around 50-70 mm
Average Humidity Approximately 70%
Sea Temperature Around 12°C to 15°C
Weather Conditions Transition from summer to autumn, variable weather
Average Wind Speed Approximately 10-15 km/h
Foliage Beginning of leaf color change
Tourist Activity Decreasing after summer peak, quieter period

September Weather FAQ for Finland

Question Answer
What is the typical temperature range in Finland during September? Average daytime temperatures range from 8°C to 15°C, with cooler nights often dropping below 5°C.
Does September mark the beginning of autumn in Finland? Yes, September generally signifies the start of autumn, with leaves changing color and decreasing daylight hours.
What is the average precipitation in September? Precipitation varies, but Finland typically receives around 40-60 mm of rainfall during September.
Are there any significant weather events common in September? September can bring early autumn storms, rain, and occasional frost, especially in northern regions.
How does daylight change during September? Daylight hours decrease from about 14 hours at the start of September to around 10 hours by month’s end.
Is September a good time for outdoor activities in Finland? Yes, the mild temperatures and beautiful autumn foliage make it ideal for hiking, berry picking, and nature walks.
What are the chances of snow in September? Snow is rare but possible in northern Finland towards the end of September, especially at higher elevations.
Are there any specific festivals or events in Finland during September? September hosts harvest festivals, cultural events, and the start of the Northern Lights viewing season.
How should travelers prepare for September weather in Finland? Packing layered clothing, waterproof gear, and warm accessories is recommended due to variable weather conditions.

  • Climate of Finland – An overview of Finland’s climate, including September weather trends.
  • Autumn Activities – Outdoor activities suitable for September in Finland, such as hiking and berry picking.
  • Weather Safety Tips – Important safety information related to changing weather conditions in September.