Vejret i Boston i januar

Boston i januar: iskoldt, regnfuldt, med ren luft — en af de svageste måneder at tage afsted.

Opdateret september 2026 · klimanormaler fra ERA5-reanalysen

Boston🇺🇸 United States · Nordøst & det atlantiske Canada · By41
  1. 41jan.
  2. 51feb.
  3. 59mar.
  4. 70apr.
  5. 86maj
  6. 89jun.
  7. 76jul.
  8. 80aug.
  9. 90sep.
  10. 74okt.
  11. 63nov.
  12. 46dec.

Nr. 12 af 12 måneder i Boston · Nr. 1268 af 1413 rejsemål at besøge i januar · komfort 41/100 (niveau F)

Dage
3°C
Nætter
-5°C
Våde dage
9
Sol
5.9 h
Luftfugtighed
68%
Dagslys
10 h
Boston, United States
Foto: Phil Evenden · Pexels

Noter fra rejsende om Boston i januar

Boston forum threads describe January as the coldest and snowiest stretch of the year, with typical highs in the 20s-30s Fahrenheit and real potential for a nor'easter or blizzard - winter precipitation here tends to arrive as snow rather than rain given how cold it stays. Posters were candid that snow totals are genuinely unpredictable from year to year: some Januarys bring almost nothing, others dump a couple of feet with little warning. Wind was flagged repeatedly as a real factor too, with Boston's reputation as a notably windy city compounding the cold and damp. Standard advice across threads: waterproof winter boots, real cold-weather layers, and flexible plans given how quickly conditions can change.
MassachusettsRegular · januar · for 5 dage siden · Læs mere på Tripadvisor ↗

Andre måneder i Boston

Regulars describe the first half of the month as often quite hot and humid, though the intensity typically backs off from July's peak - a pattern regulars are candid doesn't always hold, since some summers bring heat waves that persist well into August regardless. Our row backs the warm, humid read, 28.7C reading as a hot 30C at 73 percent humidity, over 19.1C nights, with 85.5mm of rain across 7.7 days. Regulars planning day trips to Cape Cod, Nantucket or Martha's Vineyard treat this month as prime season for exactly that kind of coastal escape from the city heat. The sea sits at 18.7C. The record: 10.7 hours of sun, a 16.7 kph wind and AQI 52.
HeatBacksOffFromJulyMostYears · august · for 3 dage siden · Læs mere på Tripadvisor ↗
May warms faster here than any other month - regulars put the end of it near 72F by day and 55F at night, which is a different city from the one that started the month. Our averages sit in the middle at 20.3C over 10.4C, reading as 19C and 7C in a 19.6 kph wind. It is also among the driest months, 78mm across 9 days, so the waterproof is optional in a way it rarely is here. What is not optional is a layer for the water: the harbour is 13.4C, and whether the day feels like spring or like March depends mostly on which way the wind is coming off it. The record: humidity 73 percent, 9.7 hours of sun inside 14.6 of daylight, and AQI 43.
TheFastestWarmUpOfTheYear · maj · for 3 dage siden · Læs mere på Tripadvisor ↗
Regulars will not forecast June here, they give a range: the fifties to the nineties, warm by day with any of hot, humid, rainy or chilly at night. Our row's 26C over 15.7C is the middle of that and not a promise. Their packing list follows from it - plan for the eighties, add a sweater and a waterproof layer, and treat everything as removable. Rain is 79.6mm across 8.8 days. One number worth knowing before booking a boat: the harbour is 16.8C this month, so a morning on the water is a jacket occasion whatever the city is doing, helped along by an 18 kph wind. The record: humidity 73 percent, 11 hours of sun inside 15.2 of daylight, and AQI 51.
FiftiesToNineties · juni · for 3 dage siden · Læs mere på Tripadvisor ↗
Boston-forum threads on September timing point past Labor Day: September 1st is the city's biggest moving day, when students and families flood in, and the holiday weekend right after is one of the busiest of the year. Regulars say the reward for waiting is real - mid-to-late September turns noticeably more relaxed once move-in is done, with thinner crowds and cheaper rooms than either summer or the foliage season that follows. Weather holds up too: early September is still warm enough for the beach, usually less humid than August though posters admit there's no guarantee. The record: 24C days, 15.1C nights, 83mm of rain across 7.3 days, 8.5 hours of sun and a 19.3C sea - good swimming weather if you can dodge the moving trucks.
SeaportSeptemberRegular · september · for 4 dage siden · Læs mere på Tripadvisor ↗

Noterne for hele året findes på oversigten over Boston. Tilføj din egen note fra Boston på kortet.

Klimanormaler for Boston — januar

Dagtemperatur3°C / 38°F🥶 iskoldt
Nattemperatur-5°C / 23°F
Føles som (dag)-1°C / 30°F
Havtemperatur4°C / 40°F🥶 koldt hav
Nedbør95 mm / 3.7 in🌧 regnfuldt
Regnvejrsdage9 dage
Luftfugtighed68 %💧 fugtigt
Dugpunkt-7°C / 19°F
Solskin5.9 t/dag
Dagslys9.5 t
Vind24 km/t / 15 mph
Snefald19.8 cm / 7.8 in
Luftkvalitet (US AQI)41🍃 god

Månedsgennemsnit fra ERA5-reanalysen. AQI er det gennemsnitlige amerikanske luftkvalitetsindeks for måneden.

Travlhed i Boston i januar

Hvor travlt der er på selve stedet — skoleferier og masseferier, de måneder en redaktør har markeret, og hvor eftertragtet vejret gør dem. Aldrig en del af komfortscoren.

TætpakketFirst Night, Winter / Christmas break i United States, skoleferie på 2 af de markeder, der fylder stedet(anslået)

JFMAMJJASOND

TætpakketTravltSkuldersæsonStille

Bedste måneder for vejret i Boston

Rangeret efter dette rejsemåls egen klimakomfortscore året igennem — noget andet end, hvor travlt der bliver (se Travlhed ovenfor).

Hårdeste vejrDet bedste vejr i Boston kommer i maj, juni og september — adskilte vinduer, ikke én sammenhængende sæson.

JFMAMJJASOND

Bedste vejrPænt vejrHårdeste vejr

Det sker i Boston i januar

Tilbagevendende sæsonbegivenheder, naturfænomener, lukninger og helligdage — kurateret og med kilder.

  • Risiko

    Nor'easter season

    1. dec. – 15. mar. · normaltVinterstorme & kulingLukninger

    One or two coastal storms a winter shut Logan and the T for a day and pile snow onto streets that were narrow before it. The rest of the winter is simply cold and clear. Kilde ↗

  • Festival

    First Night

    31. dec. – 1. jan.Jul & nytårTætpakket

    The original American New Year's Eve arts festival, running across Boston Common and Copley Square from late morning to midnight. Free, outdoors, and reliably freezing. Kilde ↗

Det sker rundt om i verden i januar →

Lige i nærheden sker der noget

Inden for 300 km fra Boston — en dagstur eller et kort hop — hvor der sker noget denne måned. Aldrig en del af komfortscoren.

Hvor ligger Boston?

Indlæser kort…

Boston i januar — ofte stillede spørgsmål

Er januar et godt tidspunkt at besøge Boston?
Boston i januar: iskoldt, regnfuldt, med ren luft — en af de svageste måneder at tage afsted. Måneden ligger nr. 12 ud af 12 for Boston på SeasonMaps komfortscore (41/100).
Hvordan er vejret i Boston i januar?
I januar har Boston i gennemsnit en dagtemperatur på 3.3 °C og en nattemperatur på -4.9 °C, med omkring 95.1 mm regn fordelt på cirka 8.9 regnvejrsdage.
Hvordan er luftkvaliteten i Boston i januar?
Boston har et gennemsnitligt amerikansk luftkvalitetsindeks på omkring 41 i januar.
Sner det i Boston i januar?
Boston får omtrent 19.8 cm sne i januar.

Inden for 300 km: Newport's Christmas at the mansions, 20. nov. – 2. jan. og Killington's Ski season, omkring 1. nov. – 25. maj.

Vejret i Boston i januar: 3 °C, 9 regnvejrsdage, 6 t sol | SeasonMap