Rautavesi (Hartola) Lake

Finnish lake in Päijät-Häme region

Rautavesi near Hartola is a Päijät‑Häme lake used for boating, shoreline fishing and summer cottage recreation during warmer months.

Rautavesi (Hartola) at a Glance#

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About Rautavesi (Hartola)#

Rautavesi (Hartola) is a lake in the Päijät-Häme region of southern Finland, located within or close to the municipality of Hartola. The Finnish name Rautavesi identifies it as one of many lakes in the Finnish Lakeland.

The lake functions as part of the local freshwater landscape and is used seasonally by residents for customary lake activities typical to the region. Detailed historical records or major built features are not widely cited.

Geographically it lies in Päijät-Häme in south-central Finland near the municipal area of Hartola.

Best Time to Visit Rautavesi (Hartola)#

Late spring to early autumn is best for Rautavesi if you want boating and open-water activities; in winter the lake freezes and conditions change.

Summer (best)
June-August · 15-22°C
Warmest, best for boating, swimming and lakeside recreation.
Winter
December-March · −10 to −2°C
Lake typically freezes; popular locally for winter activities but colder and short daylight hours.

Weather & Climate near Rautavesi (Hartola)#

Climate

Rautavesi (Hartola)'s climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in July) and freezing winters (coldest in February). Temperatures range from -12°C to 21°C. Moderate rainfall (595 mm/year).

Air Quality: AQI 18 Good
Best Time to Visit
JuneAugustMay
Temperature & Rainfall
Temperature Range
31°
Warmest Month
-40°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -11° - -5° -13° 40 mm overcast 99% 2.7 m/s 0.0 low 6.1h
February Poor -12° - -5° -13° 29 mm overcast 99% 2.6 m/s 0.0 low 8.7h
March Poor -7° - 1° -7° 34 mm partly cloudy 95% 2.8 m/s 0.2 low 11.6h
April Poor -2° - 6° -1° 33 mm overcast 83% 2.8 m/s 0.5 moderate 14.5h
May Good 4° - 15° 8° 32 mm partly cloudy 76% 2.8 m/s 0.9 moderate 17.2h
June Good 10° - 19° 15° 53 mm overcast 76% 2.6 m/s 1.1 high 18.9h
July Good 12° - 21° 17° 78 mm overcast 78% 2.4 m/s 1.1 high 18.1h
August Good 11° - 19° 15° 79 mm partly cloudy 82% 2.3 m/s 0.8 moderate 15.6h
September Acceptable 6° - 13° 8° 57 mm overcast 87% 2.5 m/s 0.4 low 12.7h
October Poor 2° - 7° 2° 59 mm overcast 93% 2.8 m/s 0.1 low 9.8h
November Poor -3° - 1° -5° 54 mm overcast 97% 2.9 m/s 0.0 low 6.9h
December Poor -8° - -3° -9° 47 mm overcast 98% 2.7 m/s 0.0 low 5.1h