Väder i St Ives i september
St Ives i september: svalt, regnigt, med kvav luft — en bra tid att besöka.
Uppdaterad september 2026 · klimatnormaler från ERA5-reanalysen
Plats 6 av 12 månader i St Ives · plats 1014 av 1413 resmål att besöka i september · komfort 67/100 (nivå C)
- Dagar
- 18°C
- Nätter
- 13°C
- Regndagar
- 14
- Sol
- 8.2 h
- Luftfuktighet
- 81%
- Dagsljus
- 13 h

Resenärernas anteckningar om St Ives i september
Regulars are specific this counts as one of the best months to visit here, warm and still buzzing without the peak-summer crowds, quieter still once children return to school and mid-month onward the preferred window by local consensus. Our row backs that mild, genuinely wet read, 17.6C over 12.5C nights feeling 10C, with a substantial 108.6mm of rain across 14.4 days and a real 28.3 kph wind. Regulars are consistent late September into early October can bring genuinely lovely blue-sky stretches with warm sea temperatures, the town's own two-week September festival adding live music, exhibitions and theatre to the calendar. The sea sits at 16.7C. The record: 8.2 hours of sun, humidity 81 percent and AQI 52.
Andra månader i St Ives
St Ives-forum threads on April weather call it a genuine toss-up - plenty of days good enough for sitting on the beach or a coastal walk in just a jumper, and just as many where poor weather rolls in and rearranges the day's plans entirely. Posters are consistent that Cornwall runs a few degrees milder than the rest of England, so even a middling April day here tends to feel better than the same forecast further north or east. The standing advice across every thread is the same: pack for anything, layers plus something properly waterproof, and treat any spell of sun as a bonus rather than an expectation. Regulars who've spent many spring breaks in the area say they've rarely lost an entire trip to weather, even in a wetter-than-usual April, since a walk or a museum visit fills the gaps between showers. The record: 12.9C days feeling like 10C, 7.1C nights, 66mm across 11.1 days, a bracing 10.8C sea, 78 percent humidity and wind averaging over 27 km/h.
St Ives-forum threads on May weather offer the classic English hedge: long days and light evenings give a good chance of great weather, but it's genuinely variable - some Mays deliver beautiful sunny stretches, others bring rain for days on end. What regulars keep repeating is a pattern from recent summers: the best weather has landed early in the season, in May, with July and August sometimes disappointing by comparison. The standing line is simply that you're in England and the weather could do anything at any time, but if good weather is going to show up anywhere, Cornwall's as good a bet as any. The record: 19.5C days feeling like 18C, 13.9C nights, 61mm across 10.6 days, a 16.4C sea still bracing for swimming, 79 percent humidity and wind averaging over 25 km/h.
June is the month St Ives regulars recommend for the crowd rather than the warmth: the real crush arrives with the school holidays in late July and August, so early June is not busy at all, though the end of June into early July can surprise you depending on when the holidays fall. The weather they describe as lovely when it behaves and thoroughly British when it does not - our row gives a 17.8C day that feels like 16C, with 10.9 precipitation days. The sea is the honest part: around 14C at the start of June by their reckoning, our row saying 16.5C for the month, and locals wear a summer shortie wetsuit even at the height of summer. The record: 12.2C nights, 67.2mm of rain, 11.5 hours of sun and a 24.9 kph wind.
July in St Ives splits down the middle of the month. The forum's own phrasing for the first half is busy enough for atmosphere but not so busy you cannot get a table without booking - and then the schools break up in late July and the town fills properly, which is where August starts early. Some regulars call even mid-July horribly busy. Parking is the standing complaint: difficult in early summer, limited out of season too, and the workaround they offer is to leave the car at Hayle and take the train in, about fifteen minutes. The record: 19.5C days that feel like 18C, 13.9C nights, 10.6 precipitation days carrying 60.7mm, 11.3 hours of sun, a 16.4C sea and a 25 kph wind.
Lägg till din egen anteckning från St Ivess kort på kartan.
Klimatnormaler för St Ives — september
Månadsmedelvärden från ERA5-reanalysen. AQI är månadens medelvärde för det amerikanska luftkvalitetsindexet.
Trängsel i St Ives 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 folkEnglish school holidays, skollov i 3 av marknaderna som fyller platsen(uppskattat)
Mest folkMycket folkMellansäsongLugnt
Bästa månaderna för vädret i St Ives
Rankat efter resmålets egen klimatkomfortpoäng över året — något helt annat än hur trångt det blir (se Trängsel ovan).
Hyfsat väderVädret i St Ives toppar juni–augusti, bäst kring juli.
Bäst väderHyfsat väderTuffast väder
På gång i St Ives i september
Återkommande säsongsevenemang, naturskådespel, stängningar och helger — utvalda och källhänvisade.
- Helg
English school holidays
18 jul – 1 sepTrångtBoka tidigtThe town is medieval-narrow and takes the whole of August at once. Leave the car at the Lelant park-and-ride and take the branch line in; the drive down to the harbour is a mistake. Källa ↗
- Festival
St Ives September Festival
12–26 sepKulturfestivalA fortnight of music, open studios and poetry across the town from the second week of September, running since 1978. The light that brought the painters here is at its best in the same weeks. Källa ↗
- Säsong
Atlantic swell at Porthmeor
15 sep – 31 mar · vanligtvisSurfsäsongPorthmeor only really works when the autumn and winter groundswells come in, which is exactly when the town is empty. Wetsuits every month of the year.
I närheten, och något är på gång
Inom 300 km från St Ives — en dagstur eller ett kort hopp — med något på gång den här månaden. Aldrig en del av komfortpoängen.
Var ligger St Ives?
St Ives i september — vanliga frågor
- Är september en bra tid att besöka St Ives?
- St Ives i september: svalt, regnigt, med kvav luft — en bra tid att besöka. Månaden ligger på plats 6 av 12 för St Ives enligt SeasonMaps komfortpoäng (67/100).
- Hur är vädret i St Ives i september?
- I september har St Ives i snitt 17.6 °C som dagshögsta och 12.5 °C som nattlägsta, med ungefär 108.6 mm regn fördelat på cirka 14.4 regndagar.
- Hur är luftkvaliteten i St Ives i september?
- St Ives har ett genomsnittligt amerikanskt luftkvalitetsindex (AQI) på ungefär 52 i september.
Inom 300 km: Baths Jane Austen Festival, 11–20 sep och Bournemouths New Forest heather, runt 1 aug – 10 sep.