25.08
tue
tue
Day
73°F
N 2 mph
Precip.
17%
17%
Night
70°F
SW 6 mph
Precip.
27%
27%
26.08
wed
wed
Day
79°F
E 3 mph
Precip.
1%
1%
Night
73°F
SW 6 mph
Precip.
16%
16%
27.08
thu
thu
Day
79°F
NE 2 mph
Precip.
11%
11%
Night
73°F
SW 3 mph
Precip.
6%
6%
28.08
fri
fri
Day
81°F
N 6 mph
Precip.
2%
2%
Night
73°F
W 6 mph
Precip.
11%
11%
29.08
sat
sat
Day
77°F
NE 3 mph
Precip.
3%
3%
Night
68°F
SW 11 mph
Precip.
9%
9%
30.08
sun
sun
Day
77°F
SW 6 mph
Precip.
1%
1%
Night
70°F
SW 9 mph
Precip.
4%
4%
31.08
mon
mon
Day
79°F
SE 2 mph
Precip.
1%
1%
Night
72°F
SW 6 mph
Precip.
3%
3%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 78.9°F. The highest and lowest sea temperatures during the month were 81.1°F and 76.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 72.3°F. The highest and lowest sea temperatures during the month were 73.8°F and 70.7°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: 13:13
August 25, tuesday
1500
73°F
NE
6 mph
6 mph
1800
73°F
N
2 mph
2 mph
2100
68°F
SW
4 mph
4 mph
August 26, wednesday
0000
70°F
SW
6 mph
6 mph
0300
70°F
SW
6 mph
6 mph
0600
68°F
SW
8 mph
8 mph
0900
72°F
SW
4 mph
4 mph
1200
79°F
E
3 mph
3 mph
