Vejret i Seattle i januar
Seattle i januar: koldt, regnfuldt, med ren luft — et jævnt tidspunkt at tage afsted.
Opdateret september 2026 · klimanormaler fra ERA5-reanalysen
Nr. 11 af 12 måneder i Seattle · Nr. 1113 af 1413 rejsemål at besøge i januar · komfort 52/100 (niveau D)
- Dage
- 9°C
- Nætter
- 2°C
- Våde dage
- 13
- Sol
- 4.2 h
- Luftfugtighed
- 85%
- Dagslys
- 9 h

Noter fra rejsende om Seattle i januar
Regulars are precise about January and want you to stop worrying about the rain: "historical rain in January is a little over 5 inches spread out over 18 days" — roughly a third of an inch a day, "mostly a drizzle." It does not rain daily and it does not rain all day; some Januaries deliver glorious sunny cold ones. It also rarely falls below freezing or snows. What they say actually gets to people is the light: "it gets dark here at 4:15pm on our shortest days," about 8.75 hours between an 8am sunrise and a 4:45pm sunset, and the most-disliked thing about the month isn't the weather but that "the days are so very short." Our record has 8.9 daylight hours, 19 rain days and 8°C days — the numbers say the same thing the forum does.
Andre måneder i Seattle
Regulars describe this as the most variable month of the year here, unlike the more settled fall and winter, with two genuinely distinct outcomes possible on any given day - sunny and into the low 70s Fahrenheit, or overcast with highs stuck in the upper 50s to low 60s. Our row backs the mild, changeable average across that range, 19.1C over 9.5C nights, with 34mm of rain across 5.3 days. Regulars are consistent this is still a genuinely good time to visit, flowers in full bloom and springlike energy throughout the city, with layering the standard advice given how unpredictable a specific day can turn out. The record: humidity 74 percent, 10.8 hours of sun, a 12.6 kph wind and AQI 44.
Regulars call this one of the city's best-looking months on paper, and are specific about why: the rains that define this region typically hold off until mid-October, and the first week of the month is often the driest and warmest stretch, with the back half cooling off a little as it goes. Our row backs the shift, 21.4C over 12.3C nights, with 35.5mm of rain across 5.6 days - a real total, but light next to what regulars describe arriving a month later. Evenings call for a light jacket or sweatshirt once the sun goes down. The one caveat some years bring is wildfire smoke drifting in from regional fires, not present every September but enough that regulars mention checking air quality before a trip built around outdoor views. The record: 9.5 hours of sun, a 12.3 kph wind and AQI 40.
Juneuary is the local word for the version of this month that feels like January, and the local claim is that summer does not start until the 5th of July - the same joke the Portland board tells, two hundred kilometres south. The instruction that follows is precise: the 30th of June is a different month from the 1st, so come at the end. Our row is kinder than the nickname. Rain is 29.5mm across 5.1 days, and there are 11.6 hours of sun inside 15.9 of daylight, so the grey is brief showers between sun breaks rather than a ceiling. What June lacks is warmth - 21.6C by day, 12C at night. The record: humidity 71 percent, a 12.5 kph wind and AQI 39.
Seattle-forum threads on August are almost giddy about the weather - this and the two months around it are the reliably dry, sunny stretch of the year, with posters calling a soggy day genuinely rare and temperatures running warm without the humidity that makes other cities miserable in summer. The one recurring caveat has nothing to do with rainfall: more than one thread flags wildfire smoke as the real risk, a haze that can roll in and ruin an otherwise perfect week with no warning. Cruise-ship crowds pack Pike Place Market and the Space Needle on port days. The record backs the dry read completely: 25.2C days, 14.7C nights, just 12mm total across 1.6 days, 11.4 hours of sun and an AQI of 44 - though that AQI can spike hard on a bad smoke day, which the average doesn't show.
Noterne for hele året findes på oversigten over Seattle. Tilføj din egen note fra Seattle på kortet.
Klimanormaler for Seattle — januar
Månedsgennemsnit fra ERA5-reanalysen. AQI er det gennemsnitlige amerikanske luftkvalitetsindeks for måneden.
Travlhed i Seattle 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.
TætpakketChristmas and New Year, Winter / Christmas break i United States, skoleferie på 2 af de markeder, der fylder stedet(anslået)
TætpakketTravltSkuldersæsonStille
Bedste måneder for vejret i Seattle
Rangeret efter dette rejsemåls egen klimakomfortscore året igennem — noget andet end, hvor travlt der bliver (se Travlhed ovenfor).
Hårdeste vejrVejret i Seattle topper juni–august, bedst omkring juli.
januar falder sammen med Winter storms and pass closures.
Bedste vejrPænt vejrHårdeste vejr
Det sker i Seattle i januar
Tilbagevendende sæsonbegivenheder, naturfænomener, lukninger og helligdage — kurateret og med kilder.
- Risiko
Winter storms and pass closures
1. nov. – 28. feb. · normaltStormsæsonLukningerAtmospheric rivers bring wind, flooding and power cuts through the dark months, and Snoqualmie and Stevens close for hours at a time for avalanche control. Snow in the city itself is rarer and worse. Kilde ↗
- Helligdag
Christmas and New Year
24. dec. – 1. jan.Jul & nytårLukningerTætpakketChristmas Day and New Year's Day are federal holidays: on 25 December most shops, museums and many restaurants close, and airports stay busy through the week between as families travel. New Year's Eve fills bars and restaurants, many at set-menu prices. Kilde ↗
Lige i nærheden sker der noget
Inden for 300 km fra Seattle — en dagstur eller et kort hop — hvor der sker noget denne måned. Aldrig en del af komfortscoren.
Hvor ligger Seattle?
Seattle i januar — ofte stillede spørgsmål
- Er januar et godt tidspunkt at besøge Seattle?
- Seattle i januar: koldt, regnfuldt, med ren luft — et jævnt tidspunkt at tage afsted. Måneden ligger nr. 11 ud af 12 for Seattle på SeasonMaps komfortscore (52/100).
- Hvordan er vejret i Seattle i januar?
- I januar har Seattle i gennemsnit en dagtemperatur på 8.5 °C og en nattemperatur på 1.9 °C, med omkring 100.7 mm regn fordelt på cirka 13.1 regnvejrsdage.
- Hvordan er luftkvaliteten i Seattle i januar?
- Seattle har et gennemsnitligt amerikansk luftkvalitetsindeks på omkring 34 i januar.
- Sner det i Seattle i januar?
- Seattle får omtrent 2.7 cm sne i januar.
Inden for 300 km: Victoria, BC's Christmas at Butchart Gardens, 1. dec. – 6. jan. og Vancouver's North Shore ski season, omkring 5. dec. – 5. apr..