Seattle hava durumu: Eylül
Seattle, Eylül ayında: ideal, biraz yağmurlu, üstelik temiz hava — gezmek için mükemmel bir zaman.
Güncellendi: Eylül 2026 · iklim normalleri ERA5 yeniden analizinden
Seattle için 12 ay içinde #4 · Eylül ayında 1413 destinasyon içinde #293 · konfor 89/100 (seviye A)
- Gündüz
- 21°C
- Gece
- 12°C
- Yağmurlu gün
- 6
- Güneş
- 9.5 h
- Nem
- 75%
- Gün ışığı
- 13 h

Eylül ayında Seattle için gezgin notları
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.
Seattle için diğer aylar
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.
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.
Seattle forum threads describe February as genuinely mixed - some stretches bring drizzly, overcast, grey days typical of the region's wet season (which runs roughly mid-October through April), while other years bring a welcome week or so of milder, lighter-sun weather that winter-weary locals specifically look forward to. Snow chances were described as relatively low by this point in winter, with January and early February the more likely window for any accumulation. One consistent tip from posters familiar with the wider region: the northern Olympic Peninsula tends to run drier and sunnier than Seattle proper in February, a worthwhile alternative for anyone chasing better odds of sun.
Yıl boyu geçerli notlar burada: Seattle genel bakış sayfası. Haritada Seattle kartından kendi notunuzu ekleyin.
Seattle iklim normalleri — Eylül
ERA5 yeniden analizinden aylık ortalamalar. AQI, ayın ortalama ABD Hava Kalitesi İndeksi değeridir.
Eylül ayında Seattle kalabalığı
Yerin kendisinin ne kadar yoğun olduğu — okul ve toplu tatiller, bir editörün işaretlediği aylar ve havanın orayı ne kadar rağbet görür kıldığı. Konfor puanına asla dahil edilmez.
Çok kalabalıkBumbershoot, Amerika Birleşik Devletleri genelinde Summer break(tahmini)
Çok kalabalıkKalabalıkAra sezonSakin
Seattle için en iyi hava ayları
Yıl boyunca bu yerin kendi iklim konfor puanına göre sıralandı — ne kadar kalabalıklaştığından ayrı bir şey (yukarıdaki Kalabalık bölümüne bakın).
İdare eder havaSeattle havası Haziran–Ağustos arasında zirvededir, en iyisi Temmuz civarıdır.
En iyi havaİdare eder havaEn zorlu hava
Eylül ayında Seattle: neler var
Her yıl tekrarlayan mevsimlik etkinlikler, doğa gösterileri, kapanışlar ve tatiller — elle derlendi ve kaynağıyla verildi.
- Doğa
Salmon at the Ballard Locks
15 Haz – 20 Eyl · geneldeYaban hayatı sezonuSockeye run through the fish ladder in early summer, chinook and coho into September, and the viewing windows below the locks are free and busy. Numbers vary wildly year to year. Kaynak ↗
- Sezon
The dry months
5 Tem – 15 Eyl · geneldeKurak sezonThe rain effectively stops after the Fourth of July and holds off until well into September. Everything outdoors in this city is scheduled around those ten weeks.
- Risk
Wildfire smoke
1 Ağu – 20 Eyl · geneldeDuman sezonuLate summer smoke from fires in eastern Washington, Oregon or British Columbia settles into the basin and can hold for days. It is the one thing that spoils the best weather of the year here. Kaynak ↗
- Festival
Bumbershoot
5–6 EylMüzik festivaliKalabalıkThe city's Labor Day weekend arts and music festival at Seattle Center, rebuilt smaller and stranger than its stadium-era self. It closes the summer the way Folklife opens it. Kaynak ↗
Yakınında, üstelik bir şeyler var
Seattle çevresinde 300 km içinde — bir günlük gezi ya da kısa bir yolculuk mesafesinde — bu ay bir şeylerin olduğu yerler. Konfor puanına asla dahil değil.
Seattle nerede?
Eylül ayında Seattle — SSS
- Seattle için Eylül iyi bir zaman mı?
- Seattle, Eylül ayında: ideal, biraz yağmurlu, üstelik temiz hava — gezmek için mükemmel bir zaman. SeasonMap konfor puanında Seattle için 12 ay içinde 4. sırada (89/100).
- Eylül ayında Seattle hava durumu nasıl?
- Eylül ayında Seattle için ortalama en yüksek sıcaklık 21.4°C, en düşük 12.3°C; yaklaşık 5.6 yağmurlu günde toplam 35.5 mm yağış düşer.
- Eylül ayında Seattle hava kalitesi nasıl?
- Eylül ayında Seattle için ortalama US hava kalitesi indeksi yaklaşık 40.
300 km içinde: Olympic National Park: High country opens, 1 Tem – 10 Eki civarı ve Victoria, BC: Whale watching season, 1 May – 15 Eki civarı.