15.09
tue
tue
Day
73°F
S 1 mph
Precip.
2%
2%
Night
66°F
SW 7 mph
Precip.
5%
5%
16.09
wed
wed
Day
72°F
NE 4 mph
Precip.
2%
2%
Night
66°F
SW 4 mph
Precip.
7%
7%
17.09
thu
thu
Day
68°F
N 9 mph
Precip.
77%
77%
Night
63°F
SW 8 mph
Precip.
71%
71%
18.09
fri
fri
Day
68°F
S 3 mph
Precip.
36%
36%
Night
63°F
SW 7 mph
Precip.
25%
25%
19.09
sat
sat
Day
68°F
SW 8 mph
Precip.
18%
18%
Night
64°F
SW 8 mph
Precip.
9%
9%
20.09
sun
sun
Day
73°F
SW 9 mph
Precip.
9%
9%
Night
66°F
SW 9 mph
Precip.
8%
8%
21.09
mon
mon
Day
75°F
SW 7 mph
Precip.
2%
2%
Night
68°F
SW 9 mph
Precip.
6%
6%
22.09
tue
tue
Day
73°F
SW 6 mph
Precip.
2%
2%
Night
68°F
SW 9 mph
Precip.
6%
6%
23.09
wed
wed
Day
75°F
SW 6 mph
Precip.
2%
2%
Night
68°F
SW 8 mph
Precip.
6%
6%
24.09
thu
thu
Day
77°F
W 2 mph
Precip.
3%
3%
Night
70°F
SW 9 mph
Precip.
6%
6%
25.09
fri
fri
Day
64°F
SW 12 mph
Precip.
6%
6%
Night
59°F
SW 14 mph
Precip.
1%
1%
26.09
sat
sat
Day
63°F
SW 11 mph
Precip.
1%
1%
Night
55°F
SW 12 mph
Precip.
1%
1%
27.09
sun
sun
Day
61°F
SW 11 mph
Precip.
1%
1%
Night
54°F
SW 9 mph
Precip.
3%
3%
28.09
mon
mon
Day
63°F
W 3 mph
Precip.
1%
1%
Night
59°F
SW 5 mph
Precip.
4%
4%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 77.2°F. The highest and lowest sea temperatures during the month were 78.8°F and 74.7°F.
Air temperature in Rijeka, °F
Precipitation total in Rijeka, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Rijeka
Rijeka on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Rijeka
Local time: 10:54
September 15, tuesday
1200
73°F
S
1 mph
1 mph
1500
75°F
E
1 mph
1 mph
1800
73°F
S
1 mph
1 mph
2100
68°F
SW
6 mph
6 mph
September 16, wednesday
0000
66°F
SW
7 mph
7 mph
0300
66°F
SW
6 mph
6 mph
0600
64°F
SW
6 mph
6 mph
0900
68°F
SW
2 mph
2 mph
