16.09
wed
wed
Day

59°F
NE 14 mph
Precip.
6%
6%
Night

50°F
NE 13 mph
Precip.
22%
22%
17.09
thu
thu
Day

52°F
NE 12 mph
Precip.
16%
16%
Night

50°F
N 9 mph
Precip.
44%
44%
18.09
fri
fri
Day

57°F
NE 13 mph
Precip.
17%
17%
Night

48°F
NE 12 mph
Precip.
28%
28%
19.09
sat
sat
Day

52°F
NE 12 mph
Precip.
24%
24%
Night

52°F
NE 15 mph
Precip.
42%
42%
20.09
sun
sun
Day

52°F
E 17 mph
Precip.
25%
25%
Night

50°F
E 10 mph
Precip.
10%
10%
21.09
mon
mon
Day

54°F
SE 12 mph
Precip.
3%
3%
Night

46°F
SE 11 mph
Precip.
8%
8%
22.09
tue
tue
Day

50°F
S 13 mph
Precip.
3%
3%
Night

48°F
S 7 mph
Precip.
16%
16%
sea water
temperature
temperature
| Jonkoping |
monthly
weather
weather
| Jonkoping |
current
weather
weather
| Jonkoping |
14 days
forecast
forecast
| Jonkoping |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 59.9°F. The highest and lowest sea temperatures during the month were 61.9°F and 58.1°F.
Air temperature in Jonkoping, °F
Precipitation total in Jonkoping, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Jonkoping
Jonkoping on a weather map
Places in Sweden:
Name
°F
24 Hours Forecast
Jonkoping
Local time: 12:04
September 16, wednesday
1500

59°F
NE
14 mph
14 mph
1800

54°F
NE
14 mph
14 mph
2100

50°F
NE
14 mph
14 mph
September 17, thursday
0000

50°F
NE
13 mph
13 mph
0300

50°F
NE
12 mph
12 mph
0600

48°F
NE
12 mph
12 mph
0900

48°F
NE
12 mph
12 mph
1200

52°F
NE
12 mph
12 mph


























