17.05
sun
sun
Day
61°F
NE 4 mph
Precip.
86%
86%
Night
46°F
SW 4 mph
Precip.
0%
0%
18.05
mon
mon
Day
63°F
NE 5 mph
Precip.
100%
100%
Night
46°F
SW 4 mph
Precip.
0%
0%
19.05
tue
tue
Day
64°F
N 4 mph
Precip.
100%
100%
Night
52°F
SW 4 mph
Precip.
0%
0%
20.05
wed
wed
Day
68°F
W 6 mph
Precip.
0%
0%
Night
52°F
SW 6 mph
Precip.
0%
0%
21.05
thu
thu
Day
70°F
SW 4 mph
Precip.
0%
0%
Night
55°F
SW 6 mph
Precip.
0%
0%
22.05
fri
fri
Day
72°F
SW 9 mph
Precip.
28%
28%
Night
55°F
S 7 mph
Precip.
0%
0%
23.05
sat
sat
Day
73°F
SW 11 mph
Precip.
0%
0%
Night
57°F
S 6 mph
Precip.
0%
0%
24.05
sun
sun
Day
75°F
NE 3 mph
Precip.
22%
22%
Night
59°F
SW 3 mph
Precip.
100%
100%
25.05
mon
mon
Day
63°F
SW 4 mph
Precip.
100%
100%
Night
57°F
SW 10 mph
Precip.
0%
0%
26.05
tue
tue
Day
57°F
SW 15 mph
Precip.
100%
100%
Night
59°F
SW 14 mph
Precip.
100%
100%
27.05
wed
wed
Day
66°F
SW 7 mph
Precip.
100%
100%
Night
55°F
SW 5 mph
Precip.
0%
0%
28.05
thu
thu
Day
64°F
SW 9 mph
Precip.
78%
78%
Night
57°F
SW 6 mph
Precip.
100%
100%
29.05
fri
fri
Day
66°F
W 4 mph
Precip.
100%
100%
Night
55°F
SW 4 mph
Precip.
0%
0%
30.05
sat
sat
Day
63°F
W 1 mph
Precip.
100%
100%
Night
59°F
N 2 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 60.9°F. The highest and lowest sea temperatures during the month were 62.6°F and 58.5°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: 08:07
May 17, sunday
0900
57°F
W
1 mph
1 mph
1200
61°F
NE
4 mph
4 mph
1500
61°F
NE
4 mph
4 mph
1800
61°F
NE
5 mph
5 mph
2100
48°F
SW
2 mph
2 mph
May 18, monday
0000
46°F
SW
4 mph
4 mph
0300
45°F
SW
5 mph
5 mph
0600
45°F
SW
5 mph
5 mph
