Oulujärvi

Lake Large Finnish lake known for fishing and islands

Oulujärvi, one of Finland’s largest lakes in Kainuu, offers boating, fishing and hundreds of islands; summer cottages and birdwatching attract domestic and international visitors.

Main image

Oulujärvi is a large lake in the Kainuu region of Finland, noted for its many islands and complex shoreline. The lake is an important regional resource for fishing, boating and summer cottage recreation.

The lake includes several inhabited and recreational islands, the largest of which is Manamansalo, where shoreline cabins, small settlements and beaches are concentrated. Seasonal boating, angling and shoreline hiking are common visitor activities, and birdlife is abundant in quieter bays.

The lake has long been used for local fisheries and recreation; modern infrastructure includes roads to main access points and local ferry services to islands in the summer months.

Oulujärvi lies within Kainuu province and is accessed from regional towns such as Kajaani and other local centres.

  • Recreation: One of Finland's larger lakes, known for a large number of islands and shallow bays that favour boating and freshwater fishing during the ice-free months.
  • Access: Access is by road connections from regional centres in Kainuu, and ferry or local boat services operate seasonally to islands such as Manamansalo.

What to See #

  • Manamansalo: A large inhabited island within the lake that is a traditional base for recreation, with shoreline beaches and summer cabins used by locals and visitors.
Oulujärvi
64.3333, 27.2500

How to Get to Oulujärvi #

Oulu is the nearest regional hub; from Oulu, drive or take local buses to towns on the lake such as Paltamo or Vaala (about 1-2 hours by road). There are ferry and boat services to some of the larger islands in summer.

Tips for Visiting Oulujärvi #

  • If driving, use the lakeside towns as bases; public transport around the lake can be limited.
  • For fishing or boating, check local regulations and seasonal restrictions.
  • Visit in late June when midsummer light is long and local summer fêtes begin.

Best Time to Visit Oulujärvi #

Summer for boating and island-hopping, winter for a stark, snowy landscape and winter sports if prepared for subzero temperatures.

Summer
June-August · 15-25°C
Long daylight, boating, and swimming in sheltered bays.
Winter
December-February · -20-0°C
Frozen expanses used for ice-fishing and winter festivals; extreme cold possible.

Weather & Climate near Oulujärvi #

Climate

Oulujärvi's climate is classified as Subarctic - Subarctic climate with mild summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -14°C to 20°C. Moderate rainfall (581 mm/year).

Best Time to Visit
JuneJulyAugust
Temperature & Rainfall
Temperature Range
29°
Warmest Month
-39°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of -7°C and lows of -14°C. Moderate rainfall (39 mm) and mostly overcast skies.

34 Poor

Comfort

-10°
Feels Like Freezing
-10°C
Temperature
-14° -7°
99%
Humidity
Very Humid

Weather

39 mm
Rainfall
2.7 m/s
Wind
Calm
0.0
UV Index
Low
5.0h daylight

February

February is freezing with highs of -6°C and lows of -14°C. Moderate rainfall (31 mm) and mostly overcast skies.

34 Poor

Comfort

-10°
Feels Like Freezing
-10°C
Temperature
-14° -6°
99%
Humidity
Very Humid

Weather

31 mm
Rainfall
2.7 m/s
Wind
Calm
0.0
UV Index
Low
8.2h daylight

March

March is freezing with highs of -1°C and lows of -9°C. Moderate rainfall (32 mm) and partly cloudy skies.

42 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-9° -1°
98%
Humidity
Very Humid

Weather

32 mm
Rainfall
2.9 m/s
Wind
Calm
0.2
UV Index
Low
11.5h daylight

April

April is cold with highs of 4°C and lows of -4°C. The driest month with just 27 mm and mostly overcast skies.

49 Poor

Comfort

Feels Like Cold
C
Temperature
-4°
92%
Humidity
Very Humid

Weather

27 mm
Rainfall
2.8 m/s
Wind
Calm
0.5
UV Index
Low
14.9h daylight

May

May is cold with highs of 11°C and lows of 2°C. Moderate rainfall (42 mm) and mostly overcast skies.

57 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
80%
Humidity
Very Humid

Weather

42 mm
Rainfall
2.9 m/s
Wind
Calm
0.8
UV Index
Moderate
18.2h daylight

June

June is cool with highs of 18°C and lows of 8°C. Moderate rainfall (59 mm) and partly cloudy skies.

69 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
18°
77%
Humidity
Very Humid

Weather

59 mm
Rainfall
2.8 m/s
Wind
Calm
1.1
UV Index
High
20.4h daylight

July

July is cool with highs of 20°C and lows of 11°C. Moderate rainfall (75 mm) and partly cloudy skies.

67 Good

Comfort

16°
Feels Like Cool
16°C
Temperature
11° 20°
80%
Humidity
Very Humid

Weather

75 mm
Rainfall
2.6 m/s
Wind
Calm
1.1
UV Index
High
19.3h daylight

August

August is cool with highs of 18°C and lows of 10°C. The wettest month with 78 mm of rain and mostly overcast skies.

61 Good

Comfort

14°
Feels Like Cool
14°C
Temperature
10° 18°
84%
Humidity
Very Humid

Weather

78 mm
Rainfall
2.6 m/s
Wind
Calm
0.7
UV Index
Moderate
16.1h daylight

September

September is cold with highs of 12°C and lows of 5°C. Moderate rainfall (56 mm) and mostly overcast skies.

55 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
89%
Humidity
Very Humid

Weather

56 mm
Rainfall
2.7 m/s
Wind
Calm
0.3
UV Index
Low
12.8h daylight

October

October is cold with highs of 5°C and lows of 0°C. Moderate rainfall (51 mm) and mostly overcast skies.

44 Poor

Comfort

Feels Like Cold
C
Temperature
95%
Humidity
Very Humid

Weather

51 mm
Rainfall
3.1 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.5h daylight

November

November is freezing with highs of 0°C and lows of -6°C. Moderate rainfall (49 mm) and mostly overcast skies.

35 Poor

Comfort

-3°
Feels Like Freezing
-3°C
Temperature
-6°
98%
Humidity
Very Humid

Weather

49 mm
Rainfall
3.0 m/s
Wind
Light Breeze
0.0
UV Index
Low
6.0h daylight

December

December is freezing with highs of -4°C and lows of -11°C. Moderate rainfall (42 mm) and mostly overcast skies.

34 Poor

Comfort

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

Weather

42 mm
Rainfall
2.7 m/s
Wind
Calm
0.0
UV Index
Low
3.6h daylight

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