Weather in Jonkoping in September 2025
Average weather
Average temperature in Jonkoping in September
Going from a maximum of +77°F during the day to a minimum of +45°F during the night, the temperature in September averages around +68°F.
The average maximum temperature goes down 6% by the end of the month, compared with the beginning of the month, from +63°F to +61°F.
Is Jonkoping warm or cold in September?
Jonkoping is typically mild in September.
Maximum temperatures go down compared to the previous month from +68°F to +61°F. The minimum temperature also goes down from +52°F to +46°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Jonkoping:
Climate in Jonkoping in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +68°F | +61°F | +50°F | ||||
| Min. temperature | ||||||
| +34°F | +27°F | +12°F | ||||
| Max. temperature | ||||||
| +91°F | +79°F | +72°F | ||||
| Rainfall | ||||||
| 84 mm | 64 mm | 56 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 79% | 83% | 87% | ||||
| Air pressure | ||||||
| 1011 HPa | 1012 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 4 | 4 | 3 | ||||
| Cloudy days | ||||||
| 7 | 10 | 12 | ||||
| Rainy days | ||||||
| 19 | 16 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 1 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +68°F in the day, the average maximum temperature lowers to +61°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 84 mm to 64 mm. Humidity rises from 79% to 83%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The amount of sunny days stay about the same, averaging 4 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Jonkoping is gradually increasing during September, going from 2 m/s to 6 m/s over the course of the month.
Rain
How was the weather last September in Jonkoping?
Climate Change Over the Years
The climate in Jonkoping in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1987 (+46°F) and the highest in 2020 (+55°F). The driest year was 2018 with only 402 mm of rainfall, and the wettest year was 2012 with 861 mm.
FAQ
Is September a good time to visit Jonkoping?
Can you sunbathe in Jonkoping in September?
Is Jonkoping rainy in September?
Is it sunny in Jonkoping in September?
Other cities in Sweden
Monthly weather in Jonkoping
Source of the data
For this page, we’ve looked at the typical weather in Jonkoping, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.