Lake Kossou

Lake Large Ivorian reservoir formed by Kossou Dam

Lake Kossou formed behind the Kossou Dam on the Bandama River and is Ivory Coast’s largest reservoir; local communities fish and boat its open water and islands.

Main image
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Fisher on Lake Kossou near Kousso in Côte d'Ivoire (1).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (10).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (11).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (12).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (13).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (14).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (2).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (3).JPG
Fisher on Lake Kossou near Kousso in Côte d'Ivoire (4).JPG

Lake Kossou is a large reservoir in central Ivory Coast created by damming the Bandama River in the 1970s. It is one of the country’s principal inland lakes and was formed as part of a hydroelectric and irrigation project.

The reservoir flooded valleys and created a new shoreline with islands and shallow bays that support fishing and local transport. The lake is used for inland fisheries and by communities living along its shores.

Construction of the dam and formation of the reservoir transformed land use in the area, displacing some communities at the time and creating new opportunities for irrigation and power generation. Management of water levels and fisheries remains an ongoing local priority.

Lake Kossou lies in central Ivory Coast within the Sassandra-Marahoué administrative area, set in an agricultural and riverine landscape rather than coastal terrain.

  • Reservoir origin: Formed in the 1970s by impoundment of the Bandama River, creating one of Ivory Coast's largest inland reservoirs used for hydroelectricity and irrigation.

What to See #

  • Kossou Dam: The dam structure and hydropower installation that created the reservoir in the 1970s and controls water levels on the Bandama River.
Lake Kossou
7.2438, -5.6654

Best Time to Visit Lake Kossou #

Best visited in the dry season (November-April) to avoid heavy rains and for easier travel and boating.

Dry season
Nov-Apr · 24-32°C
Lower rainfall and easier road access make this the most practical time to visit for boating and fishing.
Rainy season
May-Oct · 24-30°C
Frequent heavy rains raise water levels and can make some access roads and activities more difficult.

Weather & Climate near Lake Kossou #

Climate

Lake Kossou's climate is classified as Tropical Savanna - Tropical Savanna climate with consistently warm temperatures year-round. Temperatures range from 20°C to 34°C. Abundant rainfall (1123 mm/year), wettest in September with a pronounced dry season.

Best Time to Visit
JanuaryDecemberNovember
Temperature & Rainfall
Temperature Range
40°
Warmest Month
12°
Coldest Month
Monthly Conditions

January

January is warm with highs of 32°C and lows of 20°C. The driest month with just 14 mm and mostly sunny skies.

97 Ideal

Comfort

26°
Feels Like Warm
26°C
Temperature
21° 32°
51%
Humidity
Humid

Weather

14 mm
Rainfall
1.2 m/s
Wind
Calm
1.5
UV Index
Very High
11.6h daylight

February

February is hot, feeling like 29°C. Moderate rainfall (46 mm) and mostly sunny skies.

81 Excellent

Comfort

29°
Feels Like Hot
28°C
Temperature
22° 34°
61%
Humidity
Humid

Weather

46 mm
Rainfall
1.5 m/s
Wind
Calm
1.7
UV Index
Very High
11.8h daylight

March

March is the hottest month, feeling like 31°C due to high humidity. Regular rainfall (87 mm) and partly cloudy skies.

73 Very Good

Comfort

31°
Feels Like Hot
28°C
Temperature
23° 33°
73%
Humidity
Very Humid

Weather

87 mm
Rainfall
1.7 m/s
Wind
Calm
1.9
UV Index
Very High
12.0h daylight

April

April is hot, feeling like 31°C due to high humidity. Significant rainfall (132 mm) and partly cloudy skies.

69 Good

Comfort

31°
Feels Like Hot
28°C
Temperature
23° 32°
79%
Humidity
Very Humid

Weather

132 mm
Rainfall
1.9 m/s
Wind
Calm
2.0
UV Index
Extreme
12.2h daylight

May

May is warm with muggy conditions (dew point 23°C). Significant rainfall (142 mm) and partly cloudy skies.

65 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 31°
82%
Humidity
Very Humid

Weather

142 mm
Rainfall
2.0 m/s
Wind
Calm
2.0
UV Index
Very High
12.3h daylight

June

June is warm with muggy conditions (dew point 23°C). Significant rainfall (144 mm) and mostly overcast skies.

69 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 30°
85%
Humidity
Very Humid

Weather

144 mm
Rainfall
1.6 m/s
Wind
Calm
1.7
UV Index
Very High
12.4h daylight

July

July is warm with highs of 28°C and lows of 21°C. Regular rainfall (99 mm) and mostly overcast skies.

73 Very Good

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 28°
84%
Humidity
Very Humid

Weather

99 mm
Rainfall
1.4 m/s
Wind
Calm
1.5
UV Index
Very High
12.4h daylight

August

August is warm with highs of 28°C and lows of 21°C. Significant rainfall (119 mm) and mostly overcast skies.

69 Good

Comfort

24°
Feels Like Warm
24°C
Temperature
21° 28°
81%
Humidity
Very Humid

Weather

119 mm
Rainfall
1.8 m/s
Wind
Calm
1.6
UV Index
Very High
12.2h daylight

September

September is warm with muggy conditions (dew point 22°C). The wettest month with heavy rain (185 mm) and mostly overcast skies.

67 Good

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 29°
83%
Humidity
Very Humid

Weather

185 mm
Rainfall
1.4 m/s
Wind
Calm
1.7
UV Index
Very High
12.1h daylight

October

October is warm with muggy conditions (dew point 22°C). Significant rainfall (106 mm) and partly cloudy skies.

75 Very Good

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 30°
83%
Humidity
Very Humid

Weather

106 mm
Rainfall
1.3 m/s
Wind
Calm
1.8
UV Index
Very High
11.8h daylight

November

November is warm with highs of 31°C and lows of 22°C. Moderate rainfall (30 mm).

89 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 31°
78%
Humidity
Very Humid

Weather

30 mm
Rainfall
1.1 m/s
Wind
Calm
1.6
UV Index
Very High
11.7h daylight

December

December is warm with highs of 31°C and lows of 21°C. Light rainfall and mostly sunny skies.

93 Ideal

Comfort

26°
Feels Like Warm
26°C
Temperature
21° 31°
63%
Humidity
Humid

Weather

19 mm
Rainfall
0.9 m/s
Wind
Calm
1.4
UV Index
High
11.6h daylight

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