Best time to visit Big Island of Hawaii

• “These are five reasons we genuinely look forward to hosting guests in September and October.” halemele.com
• “Best month overall? Many experts and locals pick September” thisweekhawaii.com
• “the best time to visit Kona is from May to October” konasnorkelandsail.com

3 of the 7 travel guides we read name these months.

1. January79°F / 64°F · 16 rainy daysChecking fares…Humpback whale numbers peak in January and February.Kona's coolest months are December to February.
2. February78°F / 64°F · 17 rainy daysChecking fares…Hawaii's coldest sea, about 75°F, comes in February and March.
3. March79°F / 65°F · 22 rainy daysChecking fares…December to March is when Kona lows bring heavier rain, mostly on windward sides.Merrie Monarch Festival
4. April79°F / 66°F · 25 rainy daysChecking fares…April and May are shoulder months: trade winds return, rain fades, crowds thin after spring break.
5. May81°F / 67°F · 23 rainy daysChecking fares…May to October is the warm, sunny stretch for Kona.
6. June82°F / 69°F · 25 rainy daysChecking fares…June to August is peak summer, with school vacations and crowded beaches.King Kamehameha Day
7. July83°F / 70°F · 27 rainy daysChecking fares…On the Big Island, Kona runs warm with highs around 86°F while the Volcano area stays in the low 70s.July is peak season for lychee and mango.
8. August83°F / 70°F · 27 rainy daysChecking fares…August to October are Kona's warmest months, at 85 to 90°F.
9. Best timeSeptember83°F / 70°F · 23 rainy daysChecking fares…September arrivals on the Big Island run about 16 percent below the annual average, the lowest of any month.Ocean temperatures peak in September and October, reaching into the high 70s.
10. Best timeOctober82°F / 69°F · 23 rainy daysChecking fares…Calm Kohala Coast water in fall gives snorkeling visibility of twenty feet or more.Makahiki harvest season begins around October or November and runs to February or March.Ironman World Championship
11. November80°F / 68°F · 23 rainy daysChecking fares…Humpback whales begin arriving in November and December, and winter swell starts to build.
12. December79°F / 66°F · 22 rainy daysChecking fares…Mid-December to early January means full hotels, expensive flights and traffic.

Weather: Hilo averages (1991 to 2020 averages), as listed in its climate table on Wikipedia.

• Merrie Monarch FestivalHilo, HawaiiEvery March to May
• King Kamehameha DayHonolulu, Oahu, HawaiiEvery June
• Ironman World ChampionshipKailua-Kona, HawaiiEvery October

How warm is the water on the Big Island?

Hawaii sea temperatures run from about 75°F in February and March to about 80 to 82°F in August and September.

What is Hawaii's dry season?

Summer, May through October, is the dry season, with minimal rainfall on leeward coasts.

• Best Beaches in Big Island19 places
• Best Places to Visit in Big Island17 places

• JapanApril and October to November
• IrelandApril to May and September
• IcelandJune to August
• ItalyApril to May and September to October
• Costa RicaDecember to April
• Puerto RicoDecember to April
• AlaskaJune to August
• PortugalMay to June and September to October
• CancúnDecember to April
• GreeceMay to June and September to October
• ThailandNovember to February
• The Grand CanyonApril to May and September to October
• DisneylandJanuary to February and September to October
• MiamiDecember to April
• Myrtle BeachApril to May and September to October
• PragueApril to May and September to October
• EcuadorJune to September
• BaliApril to June and September to October
• TokyoMarch to May and October to November
• MoroccoMarch to May and September to November
• MauiApril to May and September to October
• MontrealMonth by month
• VeniceApril to June and September to October
• The NetherlandsApril to May and September to October
• ArubaApril to May
• New OrleansApril and October to November
• ChinaApril to May and September to October
• NashvilleApril to May and September to October
• Disney WorldJanuary to February and September
• BangkokNovember to February
• PolandMay to June and September
• New YorkApril to May and September to October
• CroatiaMay to June and September
• RomeApril to May and September to October
• San DiegoSeptember to October
• FranceMay to June and September to October
• PhuketNovember to April
• FinlandJune to August
• VietnamMarch to April
• BrazilMonth by month
• BostonSeptember to October
• DubaiNovember to March
• CanadaJuly to September
• SeoulApril to May and September to October
• New ZealandFebruary to April
• GuatemalaNovember to April
• The PhilippinesDecember to March
• FloridaNovember to April
• LisbonApril to May and September to October
• AustriaMay to June and September to October
• Los AngelesMarch to May and September to November
• ChicagoApril to May and September to October
• ParisApril to May and September to October
• Las VegasMarch to May and October to November
• San FranciscoSeptember to October
• EdinburghMay to June and September
• NapaSeptember to October
• SydneyMarch and October to November
• HawaiiApril to May and September to October
• ScotlandApril to May and September to October
• Punta CanaDecember to April
• MexicoDecember to April
• SavannahMarch to April and October to November
• Washington, DCApril to May and September to October
• ChileMarch to April and October to November
• SwitzerlandJune to September
• Mexico CityNovember to April
• Zion National ParkApril to May and September to October
• The Dominican RepublicDecember to April
• Turks and CaicosDecember to April
• Puerto VallartaNovember to April
• HonoluluApril to May and September to October
• BanffMonth by month
• SpainApril to June and September to October
• YosemiteMay to June and September
• FijiMay to October
• ColombiaDecember to March and July to August
• IndiaOctober to March
• TulumDecember to April
• The BahamasDecember to April
• NorwayMay to September
• SedonaMarch to May and September to November
• SeattleJune to September
• GermanyMay to June and September
• SantoriniMay to June and September to October
• Buenos AiresMarch to April and September to November
• The MaldivesNovember to April
• EgyptMarch to April and October to November
• LondonMay to June and September
• CharlestonMarch to May and October to November
• TaiwanMarch to April and October to November
• Rio de JaneiroApril to May and September to October
• Palm SpringsOctober to April
• YellowstoneMay and September
• South KoreaApril to May and October
• AmsterdamApril to May and September
• TurkeyApril to May and September to October
• ArgentinaMarch to April and October to November
• TorontoMonth by month
• IndonesiaMay to September
• PeruMay to October
• BelizeDecember to April
• Key WestMarch to May
• South AfricaMay to October
• KenyaJune to October
• OrlandoMarch to May and October to November
• AustraliaMarch to May and September to October
• JamaicaDecember to April
• St LuciaDecember to April
• TahitiMay to October
• EuropeMay to June and September to October
• TanzaniaJune to October
• AustinMarch to April and October to November
• Machu PicchuApril to May and September to October
• Cabo San LucasMarch to May
• Niagara FallsJune to August
• ColoradoJune to September
• OregonMonth by month
• SingaporeFebruary to April
• ArizonaMarch to April and October to November
• Acadia National ParkSeptember to October
• GalapagosDecember to May
• Lake TahoeJune and September
• MontanaJuly to September
• KauaiApril to June and September
• AzoresApril to June and September
• OkinawaMarch to April and October to November
• PanamaDecember to April
• US Virgin IslandsDecember to April
• Amalfi CoastApril to June and September to October
• Santa FeMonth by month
• DestinApril to May and September to October
• BarbadosDecember to April
• CuracaoDecember to April
• UtahApril to May and September to October
• Joshua TreeMarch to April and October to November
• PatagoniaNovember to February
• SicilyApril to June and September to October
• St. ThomasDecember to April
• Florida KeysDecember to April
• Smoky MountainsApril to May and September to October
• Hong KongNovember
• CopenhagenMay to June and September
• Sri LankaDecember to March
• Death ValleyNovember to March
• MallorcaMay to June and September
• MadeiraApril to May and October
• AntiguaDecember to April
• Cape TownMarch to May and September to November
• El SalvadorNovember to April
• IbizaJune to August
• ZanzibarJune to October
• Lake ComoMay to June and September to October
• MadridApril to May and September to October
• OaxacaNovember to April
• MalaysiaMarch to September
• SeychellesApril to May and October to November
• New MexicoSeptember to October
• TennesseeApril to May and September to October
• VermontSeptember to October
• WyomingJune to September
• Bryce CanyonOctober
• OahuApril to May and September to October
• St. MartinDecember to May
• Hilton HeadApril to May and September to October
• TuscanyApril to June and September to October
• DolomitesJune and September
• Cape CodSeptember to October
• United KingdomMay to September
• SwedenMay to September
• ShanghaiMarch to May and September to November
• San AntonioMonth by month
• Rocky Mountain National ParkJuly to September
• MaltaApril to June and September to October
• GreenlandJune to August
• DublinSeptember to October
• Cayman IslandsDecember to April
• Catalina IslandMonth by month
• CartagenaDecember to April
• CambodiaNovember to February
• AthensApril to May and September to October
• AshevilleOctober
• TexasMarch to May and October
• South AmericaNovember to February
• SloveniaJune to September
• Shenandoah National ParkMay to June and September to October
• SardiniaMay to June and September to October
• RoatánMarch to May
• PhoenixMonth by month
• North CarolinaMonth by month
• NepalMarch to April and October to November
• NamibiaMay to October
• MontenegroMay to June and September
• MedellínDecember to March and July to August
• MauritiusMay to June and September to November
• MadagascarMay to October
• JordanMarch to May and September to November
• IsraelMarch to May and October to November
• French PolynesiaMay and September to October
• CairoOctober to April
• BudapestMay to June and September to October
• Arches National ParkApril to May and September to October
• ViennaApril to May and September to October
• UzbekistanApril to May and September to October
• TaipeiSeptember to November
• St. JohnDecember to April
• South CarolinaMarch to May and September to November
• ReykjavikJune to August
• NicaraguaNovember to April
• MykonosMay to June and September to October
• MilanMarch to May and September to October
• HoustonFebruary to April and October to November
• HanoiMarch to April and September to November
• GrenadaJanuary to April
• GhanaDecember to February
• Faroe IslandsJune to August
• Cook IslandsApril and September to November
• Canary IslandsMonth by month
• BoliviaMay to October
• BerlinMay to June and September
• BeijingApril to May and September to October
• AtlantaSeptember to November
• AlbaniaMay to June and September
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• St. BartsMonth by month
• South DakotaSeptember
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• Rhode IslandMay and September to October
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• LimaDecember to March
• KyotoApril and September to November
• Koh SamuiJanuary to April
• DenmarkMay to June and September
• CreteApril to June and September to October
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• MichiganJune to August
• MelbourneMarch to May
• LouisianaMarch to May
• LaosNovember to February
• Kuala LumpurJune to August
• Kruger National ParkMay to September
• JejuMarch to May and September to November
• HondurasJanuary to April
• FlorenceMay and September to October
• DallasMarch to May and September to October
• Cape VerdeNovember to June
• BotswanaMay to October
• ZurichMay to September
• TunisiaApril to June and September to October
• TampaMonth by month
• St. KittsJanuary to April
• OsakaMarch to May and October to November
• OmanOctober to April
• MunichMonth by month
• MooreaMay to October
• KyrgyzstanJune to September
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• GoaNovember to February
• EvergladesDecember to March
• Door CountySeptember to October
• DominicaJanuary to April
• CuscoApril to May and September to October
• CalgaryJune to August
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• BonaireMonth by month
• Swiss AlpsJune and September
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• PalauNovember to April
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• MinnesotaSeptember
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• KentuckyApril to May and September to October
• Isla MujeresDecember to March
• GuamJanuary to May
• French RivieraMay to June and September
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• CubaNovember to April
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• AsiaNovember to March
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• VirginiaMonth by month
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• EthiopiaOctober to February
• CyprusApril to May and September to October
• CharlotteMonth by month
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• AucklandMarch
• MaineJune to September
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• Sequoia National ParkSeptember
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• BhutanMarch to May and September to November
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• NantucketMonth by month
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• CaliforniaApril to May and September to October
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• AnguillaDecember to March
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• NiceJuly to September
• Mount RainierJuly to September
• MongoliaJune to September
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• Badlands National ParkMonth by month
• Salt Lake CitySeptember to October
• DenaliJune to August
• PhiladelphiaApril to May and September to October
• TucsonMarch to April and October to November
• ProvenceJune
• GuadalajaraMonth by month
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• British Virgin IslandsDecember to April
• Glacier National ParkJuly to September
• BarcelonaMay to June
• VancouverJuly to September
• Quebec CityJuly to August
• DenverJune
• IstanbulApril to May and September to October
• Riviera MayaMonth by month
• Carmel-by-the-SeaSeptember to October
• Victoria, British ColumbiaMonth by month
• Mérida, YucatánNovember to March
• Santiago, ChileMarch to April and September to November
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• Central AmericaDecember to April
• MinneapolisMonth by month
• SarasotaMarch to May and October to November
• Halifax, Nova ScotiaJune and September to October
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• HelsinkiJune to August
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• JohannesburgMarch to May and September to November
• BrisbaneMarch to May and September to October
• MálagaApril to May and September to October
• Phu QuocNovember to April
• PerthMarch and October to November
• DubrovnikApril to May and September to October
• Corpus ChristiMonth by month
• American SamoaJune to September
• EstoniaMay to July and September
• SenegalNovember to April
• MassachusettsSeptember to October
• OklahomaMonth by month
• Torres del PaineDecember to March
• Czech RepublicApril to June and September to October
• HungaryMay and September to October
• Ho Chi Minh CityDecember to April
• São PauloApril to May and September to October
• AnchorageJune to August
• BoiseMay to June and September to October
• Abu DhabiNovember to March
• LouisvilleMonth by month
• OsloMonth by month
• JuneauMay to September
• QuitoJune to September
• Bosnia and HerzegovinaMay to June and September
• LatviaJune to August
• QatarNovember to March
• RussiaMay to September
• SamoaMonth by month
• Saudi ArabiaNovember to February
• ZambiaMay to October
• ZimbabweMay to October
• West VirginiaSeptember to October
• WisconsinJune to October
• Canyonlands National ParkApril to May and September to October
• YucatánNovember to March
• Baja CaliforniaDecember to April
• Blue Ridge MountainsApril to May and October
• Fort MyersNovember to April
• DetroitMonth by month
• Kansas City, MissouriMonth by month
• KathmanduMarch to April and September to November
• RenoMonth by month
• CebuJanuary to April
• Durango, ColoradoMonth by month
• BrusselsApril to June and September
• GuangzhouOctober to December
• ChattanoogaApril to May and October
• AntalyaMay to June and September to October
• Daytona BeachMonth by month
• CorfuMay to June and September
• CairnsMay to September
• HiloApril to June and September to October
• ArmeniaMay to June and September to October
• BulgariaMay to June and September
• GuyanaFebruary to March and August to October
• AlabamaMarch to May and September to November
• ConnecticutOctober
• New JerseySeptember
• PennsylvaniaMonth by month
• Capitol Reef National ParkMonth by month
• LangkawiNovember to March