Kootenay Lake vs Lake Coeur d'Alene
Lake Coeur d'Alene is the warmer swim right now at about 20.8°C. They are roughly 234 km apart in Canada and United States.
Kootenay Lake
British Columbia
19.8°C
mild · modelled estimate
- September average
- 19.8°C
- Warmest month
- August · 21.0°C
- Coldest month
- 3.0°C
- Swim season
- July–September
Kootenay Lake in British Columbia, Canada is swimmable in high summer, brisk either side of it, and drops close to single digits in winter.
Lake Coeur d'Alene
Idaho
20.8°C
warm · modelled estimate
- September average
- 20.8°C
- Warmest month
- August · 22.0°C
- Coldest month
- 4.0°C
- Swim season
- July–September
Idaho panhandle lake with pine-lined beaches and warm August water.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kootenay Lake | 4.2°C | 3.0°C | 4.2°C | 7.5°C | 12.0°C | 16.5°C | 19.8°C | 21.0°C | 19.8°C | 16.5°C | 12.0°C | 7.5°C |
| Lake Coeur d'Alene | 5.2°C | 4.0°C | 5.2°C | 8.5°C | 13.0°C | 17.5°C | 20.8°C | 22.0°C | 20.8°C | 17.5°C | 13.0°C | 8.5°C |
Monthly values are modelled from each lake's long-term winter and summer envelope, then refined with today's forecast air temperature for the headline reading.
Related lake comparisons
Want a different mix? Compare up to four lakes side by side or browse all lake water temperatures.
Explore every sea temperature page
Jump straight to a country, coastal region, city, seasonal ranking or comparison.
Sea temperature by country
Coastal region hubs
Water temperature today by city
Warmest sea in September
Warmest sea month by month (Europe)
Coldest sea this month
Swimming guides
The best time to swim in the MediterraneanWhat sea temperature is safe to swim in?Swimming with kids: the best European beachesHow sea-surface temperature data actually worksWhat sea temperature is good for snorkelling?The best time to swim in SpainThe best time to swim in GreeceThe best time to swim in CroatiaThe best time to swim in FloridaThe best time to swim in CaliforniaThe best time to swim in AustraliaA beginner's guide to cold-water swimmingWarmest European beaches in OctoberFamily beach safety tips for every swimmerWetsuit guide: what to wear by water temperatureThe best time to swim in the CaribbeanThe best time to swim in MexicoThe best time to swim in ThailandThe best time to swim in PortugalThe best time to swim in TurkeyThe best time to swim in EgyptThe best time to swim in FranceThe best time to swim in ItalyBest beaches for snorkelling around the worldBest beaches for surfing by water temperatureHow to survive a rip currentJellyfish and marine life safety for swimmersHow to read a water temperature forecastLake Michigan water temperature: what to expectBest lakes to swim in the United StatesGreat Lakes swimming guideThe best time to swim in HawaiiThe best time to swim in the MaldivesThe best time to swim in Bali
Popular beach comparisons
Cala Estreta vs Platja d'AroCala Estreta vs Cala Sa TunaCala Pola vs Platja de LloretPlatja de Sant Pol vs Platja GranCala Montjoi vs Platja de PalsCala Pola vs Platja de Sant PolCala Estreta vs Platja de PalsAiguablava vs Cala EstretaCambrils Playa vs Platja de la PinedaPlatja de la Pineda vs Platja LlargaPlatja del Miracle vs Salou LevantePlaya del Carabassí vs Playa del PostiguetPlaya de San Juan vs Playa del CarabassíPlaya de la Fossa vs Playa de LevantePlaya de la Fossa vs Playa de PonienteCala Finestrat vs Playa del AlbirCala el Portet vs Playa de la FossaCala del Moraig vs Playa del ArenalCompare any two beaches →