Lake Ruotsalainen

Lake Long Finnish lake in Päijät-Häme, boating and fishing

Ruotsalainen, in Päijät‑Häme, is a typical Finnish lake for summer cottages, saunas, boating and perch fishing; visitors combine shoreline cabins with cycling and short boat trips.

Main image

Lake Ruotsalainen is a freshwater lake in the Päijät-Häme region of southern Finland, set within a landscape of mixed forest and small settlements. It is part of the regional lake and river network used for boating, angling and seasonal recreation.

Local access points and summer cottages around the shoreline support private and day-use recreation, while the lake forms one element of the broader Finnish lakeland system. There is no record of major engineering modification of the basin.

The lake sits within Päijät-Häme and is connected to nearby waterways that serve local transport and leisure; the surrounding terrain is typical southern Finnish forest and agricultural mosaic.

Lake Ruotsalainen
Near Sysmä, Päijät-Häme, Finland
61.2436, 25.9477
Open 24 hours
Free

How to Get to Lake Ruotsalainen #

Accessible by local roads from Lahti or Heinola; regional buses service nearby towns and summer traffic increases around popular cottage areas. Parking and small boat launches are found at public piers.

Tips for Visiting Lake Ruotsalainen #

  • Rent a rowing boat from the local boathouse to explore quiet bays away from the main shoreline.
  • Visit in late May for lily pads and the brief flowering season.
  • Bring binoculars - the lake hosts warblers and migrating waterfowl in spring and autumn.

Best Time to Visit Lake Ruotsalainen #

Finnish summers are best for lake activities; shoulder seasons offer quieter birding and cooler conditions.

Summer
June-August · 15-25°C
Warm days, long evenings; ideal for boating and swimming.
Late spring-early autumn
May, September-October · 5-15°C
Good for birdwatching and quieter lakeside walks.

Weather & Climate near Lake Ruotsalainen #

Climate

Lake Ruotsalainen'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 -11°C to 21°C. Moderate rainfall (606 mm/year).

Best Time to Visit
AugustJuneMay
Temperature & Rainfall
Temperature Range
31°
Warmest Month
-35°
Coldest Month
Monthly Conditions

January

January is freezing with highs of -4°C and lows of -10°C. Moderate rainfall (42 mm) and mostly overcast skies.

32 Poor

Comfort

-7°
Feels Like Freezing
-7°C
Temperature
-10° -4°
98%
Humidity
Very Humid

Weather

42 mm
Rainfall
2.7 m/s
Wind
Calm
0.0
UV Index
Low
6.1h daylight

February

February is the coldest month with highs of -4°C and lows of -11°C. Moderate rainfall (30 mm) and mostly overcast skies.

34 Poor

Comfort

-8°
Feels Like Freezing
-8°C
Temperature
-11° -4°
99%
Humidity
Very Humid

Weather

30 mm
Rainfall
2.6 m/s
Wind
Calm
0.0
UV Index
Low
8.7h daylight

March

March is freezing with highs of 1°C and lows of -7°C. Moderate rainfall (34 mm) and partly cloudy skies.

42 Poor

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-7°
95%
Humidity
Very Humid

Weather

34 mm
Rainfall
2.7 m/s
Wind
Calm
0.2
UV Index
Low
11.6h daylight

April

April is cold with highs of 6°C and lows of -2°C. Moderate rainfall (33 mm) and mostly overcast skies.

47 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
83%
Humidity
Very Humid

Weather

33 mm
Rainfall
2.7 m/s
Wind
Calm
0.5
UV Index
Moderate
14.5h daylight

May

May is cold with highs of 15°C and lows of 4°C. Moderate rainfall (33 mm) and partly cloudy skies.

63 Good

Comfort

Feels Like Cold
C
Temperature
15°
77%
Humidity
Very Humid

Weather

33 mm
Rainfall
2.7 m/s
Wind
Calm
0.9
UV Index
Moderate
17.2h daylight

June

June is cool with highs of 20°C and lows of 10°C. Moderate rainfall (54 mm) and mostly overcast skies.

65 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
10° 20°
77%
Humidity
Very Humid

Weather

54 mm
Rainfall
2.6 m/s
Wind
Calm
1.1
UV Index
High
18.9h daylight

July

July is cool with highs of 21°C and lows of 12°C. The wettest month with 78 mm of rain and mostly overcast skies.

63 Good

Comfort

17°
Feels Like Cool
17°C
Temperature
12° 21°
78%
Humidity
Very Humid

Weather

78 mm
Rainfall
2.3 m/s
Wind
Calm
1.1
UV Index
High
18.1h daylight

August

August is cool with highs of 19°C and lows of 11°C. The wettest month with 78 mm of rain and partly cloudy skies.

67 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 19°
81%
Humidity
Very Humid

Weather

78 mm
Rainfall
2.3 m/s
Wind
Calm
0.8
UV Index
Moderate
15.6h daylight

September

September is cold with highs of 13°C and lows of 7°C. Moderate rainfall (60 mm) and mostly overcast skies.

55 Acceptable

Comfort

10°
Feels Like Cold
10°C
Temperature
13°
86%
Humidity
Very Humid

Weather

60 mm
Rainfall
2.4 m/s
Wind
Calm
0.4
UV Index
Low
12.7h daylight

October

October is cold with highs of 7°C and lows of 3°C. Moderate rainfall (62 mm) and mostly overcast skies.

43 Poor

Comfort

Feels Like Cold
C
Temperature
92%
Humidity
Very Humid

Weather

62 mm
Rainfall
2.7 m/s
Wind
Calm
0.1
UV Index
Low
9.8h daylight

November

November is cold with highs of 2°C and lows of -2°C. Moderate rainfall (54 mm) and mostly overcast skies.

35 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
97%
Humidity
Very Humid

Weather

54 mm
Rainfall
2.8 m/s
Wind
Calm
0.0
UV Index
Low
6.9h daylight

December

December is freezing with highs of -2°C and lows of -7°C. Moderate rainfall (48 mm) and mostly overcast skies.

34 Poor

Comfort

-4°
Feels Like Freezing
-4°C
Temperature
-7° -2°
98%
Humidity
Very Humid

Weather

48 mm
Rainfall
2.7 m/s
Wind
Calm
0.0
UV Index
Low
5.1h daylight

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