Lake Coeur D Alene Water Temperature

25 miles long and 3 miles at its widest point, Lake Coeur d’Alene in Idaho is 2,128 feet above sea level and is fed by the Saint Joe and fCoeur d’Alene Rivers with the Spokane River functioning as its outflow.

A beautiful destination for anglers and sailors, the glacier reservoir lake is also a favorite for water sports fans and is 220 feet deep. The lakefront city of Coeur d’Alene has much to offer and has been described as ‘a little slice of heaven’ and is easy to reach via Spokane in Washington, just 30 miles away.

Lake Coeur D Alene is a city close to Lake Coeur D Alene. August is the month with the highest water temperature at 70.3°F / 21.3°C.
The coldest month is February with an average water temperature of 32.2°F / 0.1°C.
February is the driest at 0in / 0mm and December the wettest month with 2.9in / 72.7mm.
With an average air temperature of 71.1°F / 21.7°C, July is the warmest month in a year. January is the coldest with 28.8°F / -1.8°C average air temperature.
The Climate is described as temperate climate with warm and dry summer. Best time to Visit would be in June, July, August, September.

Lake Coeur D Alene Summary

Description	Value
Warmest Month Water Temperature:	August with 70.3°F / 21.3°C
Coldest Month Water Temperature:	February with 32.2°F / 0.1°C
Warmest Month Air Temperature:	July with 71.1°F / 21.7°C
Coldest Month Air Temperature:	January with 28.8°F / -1.8°C
Wettest Month:	December with 2.9in / 72.7mm
Driest Month:	February with 0in / 0mm
Highest Humidity	January with 85.3%
Lowest Humidity	July with 41%
Best Time to Visit:	June, July, August, September
Climate Classification	temperate climate with warm and dry summer

Lake Coeur D Alene water temperature by month

°F

Lake Coeur D Alene water temperature by month

	Max. Water Temperature (°F)	ø. Water Temperature (°F)	Min. Water Temperature (°F)
January	33.1	32.4	32
February	32.4	32.2	32
March	35.4	33.3	32.2
April	41.2	38.3	35.6
May	52.2	46.2	41.4
June	64.9	57	51.8
July	72.3	66.2	61
August	73.6	67.8	62.8
September	66	60.6	55.9
October	57.2	51.4	46.8
November	46.6	43.2	40.1
December	39.7	36.1	33.3

°C

Lake Coeur D Alene water temperature by month

	Max. Water Temperature (°C)	ø. Water Temperature (°C)	Min. Water Temperature (°C)
January	0.6	0.2	-0
February	0.2	0.1	0
March	1.9	0.7	0.1
April	5.1	3.5	2
May	11.2	7.9	5.2
June	18.3	13.9	11
July	22.4	19	16.1
August	23.1	19.9	17.1
September	18.9	15.9	13.3
October	14	10.8	8.2
November	8.1	6.2	4.5
December	4.3	2.3	0.7

The hottest water temperature typically reached in August with around 70.3°F / 21.3°C. The coldest in February with an average water temperature of 32.2°F / 0.1°C.

The average water temperature of Lake Coeur d’Alene from May to September is 68F. The May temperature is normally around 64F and the water hits its peak temperature of 74.7F approximately in July to August.

On the last Sunday in June the annual Iron Man marathon hits Lake Coeur d’Alene at 7.00 a.m. precisely, and you can watch as competitors swim two loops of the lake, totalling 2.4 miles as part of the gruelling course. Try a more sedate swim in Lake Coeur d’Alene, or hire a kayak to explore the rugged shore where gorgeous beaches nestle amid a magnificent backdrop of blue skies and mountain pines.

Lake Coeur D Alene weather by month / climate table

°F

	Max. Temperature °F	ø. Temperature °F	Min. Temperature (°F)	Precip. (in)	Rainy Days (d)	Rel. Humidity (%)
January	36.9	28.8	20.3	0.7	3	85.3%
February	40.1	29.8	21	0	1	79.4%
March	50.7	35.8	23.5	1.2	5	75.5%
April	60.6	43.9	29.8	0.5	3	65.4%
May	68.7	53.4	36	0.3	0	57.6%
June	80.4	60.6	46.6	0	0	53.7%
July	87.1	71.1	55	0	0	41%
August	87.4	70.7	55	0	0	41.3%
September	77.5	60.6	46.2	0	0	51.1%
October	66.4	47.8	34.2	0	0	67.9%
November	49.1	36.7	27.1	0	4	80.9%
December	36.7	29.1	21.6	2.9	7	84.6%

°C

	Max. Temperature °C	ø. Temperature °C	Min. Temperature (°C)	Precip. (mm)	Rainy Days (d)	Rel. Humidity (%)
January	2.7	-1.8	-6.5	17.5	3	85.3%
February	4.5	-1.2	-6.1	0	1	79.4%
March	10.4	2.1	-4.7	29.6	5	75.5%
April	15.9	6.6	-1.2	13.9	3	65.4%
May	20.4	11.9	2.2	7.2	0	57.6%
June	26.9	15.9	8.1	0	0	53.7%
July	30.6	21.7	12.8	0	0	41%
August	30.8	21.5	12.8	0	0	41.3%
September	25.3	15.9	7.9	0	0	51.1%
October	19.1	8.8	1.2	0	0	67.9%
November	9.5	2.6	-2.7	0	4	80.9%
December	2.6	-1.6	-5.8	72.7	7	84.6%

February is the most draught at 0in / 0mm and December the month with the most rain around 2.9in / 72.7mm. The avg. temperature is around 71.1°F / 21.7°C, July is the hottest month in a year. January is the coolest with 28.8°F / -1.8°C avg. temperature.

Best Time to Visit Lake Coeur D Alene

The summer season is perfect for water sports and sailing and there are several marinas on the lake. Waters are warm enough for swimming from May till September, and air temperatures range from highs of 68 to 86F and lows of 42 to 56F during this period, though on average you can expect warm, sunny days with air temperatures of around 81.5F in August. Rainfall is low during summer, approximately 0.5 to 1.6 inches per month.

Visit Lake Couer d’Alene in winter to see the largest floating laser and light show in America. From Thanksgiving weekend on, you can take a cruise along the shoreline of the Coeur d’Alene Resort to see animated light displays and more, wrap up warm as temperatures are around 44F in November to 34.6F in December.

Activities around Lake Coeur D Alene

Diving is also popular in Lake Couer d’Alene and there are a number of Model T Ford automobiles which are popular dive sites, relics from the early 1900’s when the lake used to freeze over in winter and people took ill advised shortcuts over the ice.

Activities & POI in Lake Coeur D Alene

Type of Activity	List
Beach	Silver Beach, Sanders Beach, North Idaho Beach
Attraction	Higgens Point
Golf Course	Coeur d'Alene Golf Club
Caravan Site	Blackwell Island RV Park

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