Climate averages 1991–2020
Jönköping weather
in September.
A mild, moderately wet month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Jönköping: daytime highs average 15.6°C and nights cool to about 10.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 62 mm of rain on roughly 11 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 53 min on an average September day.
The nearest other city in this atlas is Borås (72 km away). In September its highs average 15.5°C, about as warm as Jönköping, with 83 mm of rain.
Among the 21 cities listed in Sweden, Jönköping ranks joint 10th of 21 for the warmest September highs and joint 16th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 15.5°C; Jönköping is level with that mean.
From September to October, average highs fall by 5.8°C to 9.8°C, and monthly rainfall falls from 62 mm to 57 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Jönköping climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.8°C-2.8°C | -2.8°C | 47 | 10.5 | 7.37 h |
| February | 1.2°C-3.3°C | -3.3°C | 39 | 9.5 | 9.39 h |
| March | 4.1°C-1.5°C | -1.5°C | 37 | 9.0 | 11.812 h |
| April | 9.5°C2.4°C | 2.4°C | 42 | 9.5 | 14.314 h |
| May | 14.4°C6.9°C | 6.9°C | 63 | 12.1 | 16.617 h |
| June | 17.9°C11.1°C | 11.1°C | 85 | 13.4 | 18.018 h |
| July | 20.5°C13.8°C | 13.8°C | 84 | 13.3 | 17.417 h |
| August | 19.8°C13.6°C | 13.6°C | 82 | 14.0 | 15.315 h |
| September, selected | 15.6°C10.2°C | 10.2°C | 62 | 10.6 | 12.913 h |
| October | 9.8°C5.8°C | 5.8°C | 57 | 11.1 | 10.410 h |
| November | 4.9°C2.0°C | 2.0°C | 52 | 11.1 | 8.08 h |
| December | 1.9°C-1.2°C | -1.2°C | 53 | 11.2 | 6.77 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Borås in SeptemberSweden · 72 kmHigh 15.5°C · Low 9.7°C · 83 mm rain
- Växjö in SeptemberSweden · 108 kmHigh 15.5°C · Low 9.5°C · 59 mm rain
- Linköping in SeptemberSweden · 111 kmHigh 15.9°C · Low 9.6°C · 53 mm rain
- Gothenburg in SeptemberSweden · 130 kmHigh 16.2°C · Low 10.6°C · 93 mm rain
- Halmstad in SeptemberSweden · 146 kmHigh 16.4°C · Low 10.5°C · 76 mm rain
- Norrköping in SeptemberSweden · 149 kmHigh 16.0°C · Low 10.2°C · 52 mm rain
- Örebro in SeptemberSweden · 177 kmHigh 15.6°C · Low 9.4°C · 55 mm rain
- Helsingborg in SeptemberSweden · 212 kmHigh 16.7°C · Low 10.8°C · 62 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Jönköping) is explained once on the Jönköping year overview and on the Sources, method and limits page.