Sweden in September: where is it warmest?
In September, Malmö is the warmest place with 17 °C by day, Kiruna the coolest with 8 °C. 11 of 25 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Malmö | 73 | 17° | 16° | 5 h | 9 |
| Lund | 71 | 17° | – | 5 h | 10 |
| Visby | 23 | 17° | 15° | 6 h | 9 |
| Ystad | 22 | 17° | 16° | 6 h | 9 |
| Trelleborg | 22 | 17° | 16° | 6 h | 9 |
| Norrköping | 22 | 17° | 15° | 6 h | 9 |
| Helsingborg | 19 | 17° | 16° | 6 h | 10 |
| Halmstad | 16 | 17° | 16° | 5 h | 12 |
| Stockholm | 69 | 16° | 14° | 6 h | 9 |
| Uppsala | 69 | 16° | – | 5 h | 8 |
| Linköping | 69 | 16° | – | 5 h | 9 |
| Västerås | 68 | 16° | – | 5 h | 9 |
| Örebro | 65 | 16° | – | 5 h | 10 |
| Jönköping | 64 | 16° | – | 5 h | 10 |
| Växjö | 63 | 16° | – | 5 h | 10 |
| Karlstad | 62 | 16° | – | 6 h | 11 |
| Gothenburg | 60 | 16° | 16° | 5 h | 12 |
| Karlskrona | 26 | 16° | 15° | 7 h | 9 |
| Kalmar | 25 | 16° | 15° | 6 h | 8 |
| Södertälje | 22 | 16° | 14° | 5 h | 8 |
| Gävle | 21 | 16° | 13° | 5 h | 9 |
| Sundsvall | 20 | 15° | 13° | 5 h | 9 |
| Umeå | 50 | 13° | – | 5 h | 11 |
| Luleå | 19 | 13° | 12° | 5 h | 10 |
| Kiruna | 17 | 8° | – | 4 h | 12 |
Sweden in September: quick answers
Sweden in September: where is it warmest?
The warmest places in September are Malmö (17 °C), Lund (17 °C) and Visby (17 °C).
Sweden in September: where is the sea warmest?
The sea is warmest at Malmö (16 °C), Ystad (16 °C) and Trelleborg (16 °C).
Sweden in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Malmö, Lund and Stockholm.
Sweden month by month
Sweden: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences