17.05
sun
sun
Day

61°F
NE 4 mph
Precip.
0%
0%
Night

46°F
SW 4 mph
Precip.
0%
0%
18.05
mon
mon
Day

63°F
NE 4 mph
Precip.
61%
61%
Night

50°F
SW 3 mph
Precip.
0%
0%
19.05
tue
tue
Day

64°F
NE 4 mph
Precip.
83%
83%
Night

52°F
SW 6 mph
Precip.
0%
0%
20.05
wed
wed
Day

70°F
W 3 mph
Precip.
0%
0%
Night

54°F
SW 6 mph
Precip.
0%
0%
21.05
thu
thu
Day

68°F
E 2 mph
Precip.
100%
100%
Night

54°F
SW 6 mph
Precip.
0%
0%
22.05
fri
fri
Day

70°F
N 1 mph
Precip.
0%
0%
Night

55°F
SW 6 mph
Precip.
0%
0%
23.05
sat
sat
Day

72°F
NE 2 mph
Precip.
73%
73%
Night

57°F
SW 6 mph
Precip.
100%
100%
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: 00:42
May 17, sunday
0300

43°F
SW
5 mph
5 mph
0600

41°F
SW
6 mph
6 mph
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
N
2 mph
2 mph
2100

50°F
SW
2 mph
2 mph
May 18, monday
0000

46°F
SW
4 mph
4 mph



























