Lake Water Temperature
Freshwater temperatures for 525 of the world's most-swum lakes, lochs and reservoirs — monthly averages, the swim season, and a live estimate refined with today's air temperature. Open the interactive lake temperature map, the live sea temperature map, or compare lakes side by side. For moving water, see river & swimming hole temperatures.
United States
Lake TahoeCalifornia / Nevada20°CAugustLake MichiganGreat Lakes22°CAugustLake SuperiorGreat Lakes15°CAugustLake ErieGreat Lakes24°CAugustLake HuronGreat Lakes20°CAugustLake OntarioGreat Lakes22°CAugustLake PowellUtah / Arizona26°CAugustLake MeadNevada / Arizona29°CAugustLake HavasuArizona30°CAugustLake GeorgeNew York24°CAugustLake ChamplainVermont / New York23°CAugustLake WinnipesaukeeNew Hampshire24°CAugustLake of the OzarksMissouri28°CAugustLake TravisTexas29°CAugustLake LanierGeorgia29°CAugustLake NormanNorth Carolina29°CAugustLake OkeechobeeFlorida30°CAugustCrater LakeOregon16°CAugustLake Coeur d'AleneIdaho22°CAugustFlathead LakeMontana20°CAugustLake ChelanWashington22°CAugustLake WashingtonWashington23°CAugustLake SammamishWashington24°CAugustLake UnionWashington23°CAugustLake CrescentWashington17°CAugustPriest LakeIdaho21°CAugustLake Pend OreilleIdaho21°CAugustBear LakeUtah / Idaho22°CAugustRedfish LakeIdaho18°CAugustPayette LakeIdaho20°CAugustUtah LakeUtah25°CAugustGreat Salt LakeUtah26°CAugustLake SakakaweaNorth Dakota22°CAugustDevils LakeNorth Dakota23°CAugustLake OaheSouth Dakota23°CAugustPactola LakeSouth Dakota21°CAugustLake MinnetonkaMinnesota24°CAugustLake VermilionMinnesota22°CAugustMille Lacs LakeMinnesota23°CAugustLeech LakeMinnesota23°CAugustLake WinnibigoshishMinnesota23°CAugustGull LakeMinnesota24°CAugustLake PepinMinnesota / Wisconsin25°CAugustLake WinnebagoWisconsin24°CAugustLake MendotaWisconsin25°CAugustGreen LakeWisconsin23°CAugustLake WisconsinWisconsin25°CAugustCastle Rock LakeWisconsin25°CAugustLake CharlevoixMichigan22°CAugustTorch LakeMichigan21°CAugustHiggins LakeMichigan23°CAugustHoughton LakeMichigan25°CAugustLake St. ClairMichigan24°CAugustGrand Traverse BayMichigan21°CAugustLake CumberlandKentucky28°CAugustKentucky LakeKentucky / Tennessee29°CAugustLake BarkleyKentucky29°CAugustDale Hollow LakeTennessee28°CAugustNorris LakeTennessee28°CAugustDouglas LakeTennessee29°CAugustWatts Bar LakeTennessee29°CAugustPercy Priest LakeTennessee29°CAugustTims Ford LakeTennessee29°CAugustLake GuntersvilleAlabama30°CAugustLake MartinAlabama30°CAugustSmith LakeAlabama29°CAugustWheeler LakeAlabama30°CAugustWeiss LakeAlabama30°CAugustLake Sidney LanierGeorgia29°CAugustLake AllatoonaGeorgia29°CAugustLake OconeeGeorgia30°CAugustLake HartwellGeorgia / South Carolina29°CAugustLake SinclairGeorgia30°CAugustLake Blue RidgeGeorgia27°CAugustLake MurraySouth Carolina30°CAugustLake MarionSouth Carolina30°CAugustLake MoultrieSouth Carolina30°CAugustLake KeoweeSouth Carolina29°CAugustLake JocasseeSouth Carolina26°CAugustLake WylieNorth Carolina29°CAugustLake JamesNorth Carolina28°CAugustFontana LakeNorth Carolina26°CAugustJordan LakeNorth Carolina30°CAugustFalls LakeNorth Carolina30°CAugustLake GastonNorth Carolina / Virginia29°CAugustSmith Mountain LakeVirginia28°CAugustLake AnnaVirginia29°CAugustClaytor LakeVirginia27°CAugustDeep Creek LakeMaryland25°CAugustRaystown LakePennsylvania26°CAugustLake WallenpaupackPennsylvania26°CAugustConneaut LakePennsylvania25°CAugustLake NockamixonPennsylvania26°CAugustSeneca LakeNew York24°CAugustCayuga LakeNew York24°CAugustCanandaigua LakeNew York24°CAugustKeuka LakeNew York24°CAugustSkaneateles LakeNew York23°CAugustOneida LakeNew York25°CAugustSaranac LakeNew York22°CAugustLake PlacidNew York21°CAugustChautauqua LakeNew York25°CAugustGreenwood LakeNew Jersey / New York25°CAugustLake HopatcongNew Jersey26°CAugustCandlewood LakeConnecticut26°CAugustLake WaramaugConnecticut25°CAugustLake WinnisquamNew Hampshire24°CAugustSquam LakeNew Hampshire24°CAugustNewfound LakeNew Hampshire23°CAugustLake SunapeeNew Hampshire23°CAugustSebago LakeMaine23°CAugustMoosehead LakeMaine21°CAugustRangeley LakeMaine21°CAugustLong LakeMaine23°CAugustLake BomoseenVermont24°CAugustLake MemphremagogVermont22°CAugustLake WilloughbyVermont21°CAugustTable Rock LakeMissouri28°CAugustTruman LakeMissouri28°CAugustBull Shoals LakeArkansas / Missouri28°CAugustBeaver LakeArkansas28°CAugustLake OuachitaArkansas29°CAugustGreers Ferry LakeArkansas29°CAugustLake HamiltonArkansas30°CAugustGrand Lake o' the CherokeesOklahoma29°CAugustLake TenkillerOklahoma29°CAugustLake TexomaOklahoma / Texas30°CAugustLake EufaulaOklahoma30°CAugustCanyon LakeTexas29°CAugustLake LBJTexas30°CAugustLake BuchananTexas30°CAugustLake ConroeTexas31°CAugustLake LivingstonTexas31°CAugustLake AmistadTexas30°CAugustPossum Kingdom LakeTexas30°CAugustLake Ray HubbardTexas31°CAugustLake GrapevineTexas31°CAugustElephant Butte LakeNew Mexico27°CAugustNavajo LakeNew Mexico24°CAugustLake PleasantArizona29°CAugustSaguaro LakeArizona29°CAugustCanyon Lake (Arizona)Arizona28°CAugustRoosevelt LakeArizona29°CAugustLake MohaveArizona / Nevada27°CAugustPyramid LakeNevada23°CAugustLake BerryessaCalifornia25°CAugustClear LakeCalifornia26°CAugustShasta LakeCalifornia25°CAugustTrinity LakeCalifornia24°CAugustLake AlmanorCalifornia22°CAugustFolsom LakeCalifornia26°CAugustLake CasitasCalifornia26°CAugustBig Bear LakeCalifornia21°CAugustLake ArrowheadCalifornia22°CAugustDiamond Valley LakeCalifornia27°CAugustLake PerrisCalifornia28°CAugustGrand LakeColorado18°CAugustDillon ReservoirColorado15°CAugustHorsetooth ReservoirColorado21°CAugustChatfield ReservoirColorado22°CAugustBlue Mesa ReservoirColorado19°CAugustFlaming Gorge ReservoirUtah / Wyoming22°CAugustJackson LakeWyoming17°CAugustYellowstone LakeWyoming15°CAugust
Canada
Okanagan LakeBritish Columbia23°CAugustLake SimcoeOntario23°CAugustLake MuskokaOntario22°CAugustLake WinnipegManitoba21°CAugustLake LouiseAlberta9°CAugustGeorgian BayOntario21°CAugustLake NipissingOntario22°CAugustLake of the WoodsOntario22°CAugustRideau LakesOntario24°CAugustLake ScugogOntario24°CAugustSturgeon LakeOntario23°CAugustBalsam LakeOntario23°CAugustLake JosephOntario22°CAugustLake RosseauOntario22°CAugustLake CouchichingOntario23°CAugustKawartha LakesOntario23°CAugustLake TemagamiOntario21°CAugustLake NipigonOntario17°CAugustLac Saint-JeanQuebec21°CAugustLac MemphremagogQuebec22°CAugustLac MassawippiQuebec22°CAugustLac TremblantQuebec21°CAugustLac des SablesQuebec22°CAugustLac SimonQuebec22°CAugustLake SkahaBritish Columbia24°CAugustShuswap LakeBritish Columbia23°CAugustKootenay LakeBritish Columbia21°CAugustCultus LakeBritish Columbia23°CAugustHarrison LakeBritish Columbia21°CAugustKalamalka LakeBritish Columbia23°CAugustChristina LakeBritish Columbia24°CAugustSproat LakeBritish Columbia22°CAugustLake CowichanBritish Columbia22°CAugustSylvan LakeAlberta20°CAugustLake MinnewankaAlberta11°CAugustMoraine LakeAlberta8°CAugustPigeon LakeAlberta21°CAugustLac La BicheAlberta20°CAugustLake WabamunAlberta21°CAugustWaskesiu LakeSaskatchewan20°CAugustLast Mountain LakeSaskatchewan21°CAugustLake DiefenbakerSaskatchewan21°CAugustCandle LakeSaskatchewan20°CAugustLake ManitobaManitoba21°CAugustClear Lake (Manitoba)Manitoba21°CAugustBras d'Or LakeNova Scotia21°CAugustLake BanookNova Scotia22°CAugustGrand Lake (New Brunswick)New Brunswick23°CAugustLake UtopiaNew Brunswick22°CAugustGander LakeNewfoundland and Labrador17°CAugust
Germany
Lake ConstanceBaden-Württemberg23°CAugustChiemseeBavaria23°CAugustStarnberger SeeBavaria22°CAugustTegernseeBavaria21°CAugustWannseeBerlin23°CAugustMüggelseeBerlin24°CAugustLake ChiemseeBavaria23°CAugustLake StarnbergBavaria23°CAugustLake AmmerseeBavaria23°CAugustLake TegernseeBavaria22°CAugustLake WalchenseeBavaria20°CAugustLake KochelseeBavaria22°CAugustLake EibseeBavaria19°CAugustLake KonigsseeBavaria19°CAugustLake SchlierseeBavaria22°CAugustLake SteinhudeLower Saxony24°CAugustLake MuritzMecklenburg23°CAugustLake SchwerinMecklenburg23°CAugustLake PlauMecklenburg23°CAugustLake ScharmutzelseeBrandenburg24°CAugustLake WannseeBerlin24°CAugustLake MuggelseeBerlin24°CAugustLake TegelBerlin24°CAugustLake SenftenbergBrandenburg24°CAugustLake CospudenSaxony24°CAugustLake GeiseltalSaxony-Anhalt24°CAugustLake EderseeHesse23°CAugustLake TitiseeBaden-Wurttemberg21°CAugustLake SchluchseeBaden-Wurttemberg21°CAugustLake BostalseeSaarland23°CAugustLake RurseeNorth Rhine-Westphalia22°CAugustLake BaldeneyNorth Rhine-Westphalia23°CAugustLake DiemelseeHesse22°CAugustLake SylvensteinBavaria19°CAugust
France
Lake AnnecyHaute-Savoie23°CAugustLac du BourgetSavoie24°CAugustLac de Sainte-CroixProvence26°CAugustLac Léman (Évian)Haute-Savoie22°CAugustLac du BourgetAuvergne-Rhone-Alpes24°CAugustLac d'AiguebeletteSavoie25°CAugustLac de Serre-PonconHautes-Alpes23°CAugustLac de CastillonProvence24°CAugustLac d'EsparronProvence25°CAugustLac de VassiviereNouvelle-Aquitaine22°CAugustLac d'HourtinGironde24°CAugustLac de LacanauGironde24°CAugustLac de BiscarrosseLandes25°CAugustLac de SanguinetLandes25°CAugustLac de SoustonsLandes25°CAugustLac de PareloupOccitanie23°CAugustLac de SalagouOccitanie27°CAugustLac du Der-ChantecoqGrand Est24°CAugustLac de MadineGrand Est23°CAugustLac de GerardmerVosges22°CAugustLac de Pierre-PerceeGrand Est22°CAugustLac de ChalainJura24°CAugustLac de VouglansJura24°CAugustLac de PaladruIsere25°CAugustLac de NaussacOccitanie22°CAugustLac de GuerledanBrittany23°CAugust
United Kingdom
WindermereLake District19°CAugustConiston WaterLake District18°CAugustUllswaterLake District17°CAugustDerwentwaterLake District18°CAugustLoch LomondScotland17°CAugustLoch NessScotland13°CAugustWindermereCumbria19°CAugustBassenthwaite LakeCumbria18°CAugustButtermereCumbria17°CAugustWastwaterCumbria16°CAugustCrummock WaterCumbria17°CAugustGrasmereCumbria19°CAugustLoch AweScotland17°CAugustLoch TayScotland17°CAugustLoch MorlichScotland16°CAugustLoch EarnScotland17°CAugustLoch KatrineScotland16°CAugustLoch InshScotland17°CAugustBala LakeWales19°CAugustLlyn PadarnWales18°CAugustLlyn BrenigWales17°CAugustRutland WaterEngland21°CAugustLake VyrnwyWales18°CAugustLoch MorarScotland16°CAugustLough NeaghNorthern Ireland19°CAugustLough ErneNorthern Ireland19°CAugust
Italy
Lake GardaLombardy / Veneto25°CAugustLake ComoLombardy24°CAugustLake MaggiorePiedmont / Ticino24°CAugustLake IseoLombardy24°CAugustLake BraccianoLazio26°CAugustLake TrasimenoUmbria27°CAugustLake BolsenaLazio26°CAugustLake OrtaPiedmont24°CAugustLake VareseLombardy25°CAugustLake IdroLombardy23°CAugustLake MolvenoTrentino20°CAugustLake CaldonazzoTrentino24°CAugustLake LevicoTrentino24°CAugustLake LedroTrentino23°CAugustLake BraiesSouth Tyrol14°CAugustLake ResiaSouth Tyrol15°CAugustLake CaldaroSouth Tyrol26°CAugustLake Santa CroceVeneto23°CAugustLake VicoLazio25°CAugustLake AlbanoLazio25°CAugustLake MassaciuccoliTuscany26°CAugust
Switzerland
Lake GenevaVaud / Geneva22°CAugustLake ZurichZurich23°CAugustLake LucerneCentral Switzerland22°CAugustLake LuganoTicino25°CAugustLake ThunBernese Oberland21°CAugustLake BrienzBern17°CAugustLake NeuchatelNeuchatel22°CAugustLake BielBern22°CAugustLake ZugZug22°CAugustLake WalenSt. Gallen20°CAugustLake SilsGraubunden15°CAugustLake SilvaplanaGraubunden15°CAugustLake AegeriZug21°CAugustLake SarnenObwalden20°CAugustLake GreifenseeZurich22°CAugustLake PfaffikonZurich22°CAugustLake HallwilAargau23°CAugustLake MurtenFribourg23°CAugust
Austria
WolfgangseeSalzkammergut23°CAugustWörtherseeCarinthia26°CAugustAtterseeUpper Austria22°CAugustLake NeusiedlBurgenland27°CAugustLake WolfgangSalzburg22°CAugustLake AtterseeUpper Austria22°CAugustLake MondseeUpper Austria23°CAugustLake TraunseeUpper Austria21°CAugustLake HallstattUpper Austria20°CAugustLake MillstattCarinthia24°CAugustLake OssiachCarinthia25°CAugustLake WeissenseeCarinthia23°CAugustLake FaakCarinthia26°CAugustLake Klopeiner SeeCarinthia28°CAugustLake AchenseeTyrol20°CAugustLake ZellSalzburg22°CAugustLake FuschlSalzburg22°CAugust
Spain
Lake SanabriaCastilla y León22°CAugustEmbalse de San JuanMadrid25°CAugustLago de SanabriaCastile and Leon22°CAugustEmbalse de AlarconCastile-La Mancha26°CAugustEmbalse de EntrepenasGuadalajara25°CAugustEmbalse de El AtazarMadrid25°CAugustEmbalse de IznajarAndalusia28°CAugustEmbalse de NegratinAndalusia28°CAugustLago de BanyolesCatalonia26°CAugustEmbalse de SauCatalonia26°CAugustEmbalse de RianoCastile and Leon20°CAugustEmbalse de ProserpinaExtremadura28°CAugustEmbalse de OrellanaExtremadura28°CAugustEmbalse de As PontesGalicia24°CAugust
Poland
Lake ŚniardwyMasuria23°CAugustLake WigryPodlaskie22°CAugustLake SniardwyMasuria22°CAugustLake MamryMasuria22°CAugustLake NiegocinMasuria22°CAugustLake WigryPodlaskie21°CAugustLake SolinaSubcarpathia23°CAugustLake ZywiecSilesia23°CAugustLake GopoKuyavia23°CAugustLake CharzykowskiePomerania22°CAugustLake JeziorakWarmia22°CAugust