Väder i St. John's, Newfoundland (St. John's) i september

St. John's, Newfoundland i september: skönt, regnigt, med ren luft — en mycket bra tid att besöka.

Uppdaterad september 2026 · klimatnormaler från ERA5-reanalysen

St. John's, Newfoundland🇨🇦 Canada · Nordöstra USA och Atlantkanada · Stad77
  1. 33jan
  2. 38feb
  3. 46mar
  4. 59apr
  5. 71maj
  6. 80jun
  7. 90jul
  8. 88aug
  9. 77sep
  10. 66okt
  11. 51nov
  12. 36dec

Plats 4 av 12 månader i St. John's, Newfoundland · plats 809 av 1413 resmål att besöka i september · komfort 77/100 (nivå B)

Dagar
18°C
Nätter
9°C
Regndagar
10
Sol
7.3 h
Luftfuktighet
81%
Dagsljus
13 h
St. John's, Newfoundland, Canada
Foto: Daniel Battersby · Pexels

Resenärernas anteckningar om St. John's, Newfoundland i september

September is one of the better months for weather here and the worst trade you can make for wildlife. The fog thins - this city averages 124 fog days a year, but they are far fewer after mid-July - and the coast clears. The icebergs, though, run March to about July, so late September offers little or no chance of one, and the puffins and whales are thinning too, with the humpbacks starting their move to calving grounds. Our row gives 18.3C days over 8.7C nights that feel like 6C, a 25.3 kph wind and a 12.9C sea. The record: 90.9mm across 10.2 days, 7.3 hours of sun and AQI 36.
GoodWeatherWrongMonthForBergs · september · för 5 dagar sedan · Läs mer på Tripadvisor ↗

Andra månader i St. John's, Newfoundland

Regulars are direct that this is the rainiest month of the year here, occasionally worsened by the remnants of a hurricane or tropical storm pushing in extra rain, and specifically recommend the first ten days as the sweet spot before it turns cooler and the odds of snow climb. Our row backs that cool, genuinely wet read, 13.1C over 4.1C nights feeling 0C, with 84.2mm of rain across 9.8 days and a trace of early snow, 0.1cm. Regulars are consistent the city itself stays fully in swing for visitors even as some seasonal attractions wind down, Signal Hill's visitor center specifically closing around the 10th of the month. The sea sits at a cold 9.4C. The record: humidity 80 percent, 5.6 hours of sun, a 26.1 kph wind and AQI 34.
RainiestMonthHereFirstTenDaysAreBest · oktober · för 5 dagar sedan · Läs mer på Tripadvisor ↗
May here is rain, wind and fog, and regulars say the variation is the real story: one day near freezing, the next 15C. Our row averages 11.7C but reads as 8C, with nights at 1.4C feeling like -3C in a 25 kph wind, 73.7mm across 11.6 days, and 2.1cm still sitting in the snow column. A hooded coat, because the rain and sleet here travel sideways, and a sweater underneath it. Icebergs are why many people come and nobody on the board will promise them: they drift on currents and pack ice, they turn up any time from March into July, and mid to late May is a good bet rather than a safe one. Dress for the boat - the sea is 1.5C. The record: humidity 80 percent, 8.6 hours of sun and AQI 35.
IcebergsNeverGuaranteed · maj · för 5 dagar sedan · Läs mer på Tripadvisor ↗
June in St John's has a local name for its fog - capelin weather - blanket fog that can sit for days, and regulars are honest that it is the month's one real drawback in a month that is not warm to begin with. Our row gives 17.9C by day feeling like 16C, 7.1C at night, and a 4.5C sea. After mid-July it is less common. The trade they offer in exchange is the reason to come at all: the same capelin run brings the whales, and June is prime iceberg season, though the bergs that reach St John's, Bay Bulls and Ferryland have melted small by the time they get this far south. Mid-June averages nearer 18C by day and 12 at night. The record: 11.2 precipitation days carrying 81.4mm, humidity 84 percent and a 23.8 kph wind.
CapelinWeather · juni · för 5 dagar sedan · Läs mer på Tripadvisor ↗
Late July is the best chance of good weather here, and the St John's forum still refuses to promise any: the standing line is that if you do not like it, wait, and posters say it is not unusual to get sun, rain, hail, sleet and snow in one day. Fog is the local specialty - the city averages 124 fog days a year, June's blanket capelin fogs being the worst of it, and they thin out after mid-July. That timing cuts the other way for icebergs: the season is May to June, so arriving mid-July makes sightings slim. Packing advice is shorts and short sleeves plus, always with you, long trousers, a fleece, a rain shell, a warm hat and gloves. The record: 22.8C days, 11.9C nights, 10 precipitation days, 84 percent humidity, an 11.4C sea.
CapelinWeatherLayers · juli · för 5 dagar sedan · Läs mer på tripadvisor.ca ↗

Lägg till din egen anteckning från St. John's, Newfoundlands kort på kartan.

Klimatnormaler för St. John's, Newfoundland — september

Dagshögsta18°C / 65°F😎 skönt
Nattlägsta9°C / 48°F
Känns som (högsta)17°C / 63°F
Havstemperatur13°C / 55°F🥶 kallt hav
Nederbörd91 mm / 3.6 tum🌧 regnigt
Regndagar10 dagar
Luftfuktighet81 %💦 mycket fuktigt
Daggpunkt11°C / 51°F
Solsken7.3 h/dygn
Dagsljus12.5 h
Vind25 km/h / 16 mph
Luftkvalitet (US AQI)36🍃 bra

Månadsmedelvärden från ERA5-reanalysen. AQI är månadens medelvärde för det amerikanska luftkvalitetsindexet.

Trängsel i St. John's, Newfoundland i september

Hur mycket folk det är på själva platsen — skollov och storhelger, månaderna en redaktör har märkt upp, och hur eftertraktade vädret gör dem. Aldrig en del av komfortpoängen.

Mycket folkSummer break i Canada(uppskattat)

JFMAMJJASOND

Mest folkMycket folkMellansäsongLugnt

Bästa månaderna för vädret i St. John's, Newfoundland

Rankat efter resmålets egen klimatkomfortpoäng över året — något helt annat än hur trångt det blir (se Trängsel ovan).

Hyfsat väderVädret i St. John's, Newfoundland toppar juni–augusti, bäst kring juli.

JFMAMJJASOND

Bäst väderHyfsat väderTuffast väder

På gång i St. John's, Newfoundland i september

Återkommande säsongsevenemang, naturskådespel, stängningar och helger — utvalda och källhänvisade.

  • Risk

    Post-tropical storm season

    1 sep – 31 okt · vanligtvisOrkansäsong

    In some years the remains of an Atlantic hurricane cross the Avalon Peninsula: Igor in 2010 washed out roads across eastern Newfoundland and Larry came ashore near the city in 2021. Flights and ferries stop while one passes. Källa ↗

Vad som är på gång i världen i september →

Var ligger St. John's, Newfoundland?

Laddar kartan…

St. John's, Newfoundland i september — vanliga frågor

Är september en bra tid att besöka St. John's, Newfoundland?
St. John's, Newfoundland i september: skönt, regnigt, med ren luft — en mycket bra tid att besöka. Månaden ligger på plats 4 av 12 för St. John's, Newfoundland enligt SeasonMaps komfortpoäng (77/100).
Hur är vädret i St. John's, Newfoundland i september?
I september har St. John's, Newfoundland i snitt 18.3 °C som dagshögsta och 8.7 °C som nattlägsta, med ungefär 90.9 mm regn fördelat på cirka 10.2 regndagar.
Hur är luftkvaliteten i St. John's, Newfoundland i september?
St. John's, Newfoundland har ett genomsnittligt amerikanskt luftkvalitetsindex (AQI) på ungefär 36 i september.
Väder i St. John's, Newfoundland (St. John's) i september: 18 °C, 10 regndagar, 7 h sol | SeasonMap