18.12
thu
thu
Day

48°F
N 2 mph
Precip.
78%
78%
Night

45°F
NE 1 mph
Precip.
81%
81%
19.12
fri
fri
Day

46°F
NE 2 mph
Precip.
70%
70%
Night

46°F
S 1 mph
Precip.
82%
82%
20.12
sat
sat
Day

54°F
SW 4 mph
Precip.
0%
0%
Night

45°F
SW 6 mph
Precip.
0%
0%
21.12
sun
sun
Day

48°F
SW 4 mph
Precip.
0%
0%
Night

43°F
SW 4 mph
Precip.
0%
0%
22.12
mon
mon
Day

50°F
W 2 mph
Precip.
65%
65%
Night

46°F
NW 6 mph
Precip.
100%
100%
23.12
tue
tue
Day

50°F
W 1 mph
Precip.
100%
100%
Night

46°F
SW 3 mph
Precip.
100%
100%
24.12
wed
wed
Day

48°F
NW 2 mph
Precip.
100%
100%
Night

46°F
SW 2 mph
Precip.
86%
86%
25.12
thu
thu
Day

52°F
NW 2 mph
Precip.
100%
100%
Night

48°F
SW 4 mph
Precip.
23%
23%
26.12
fri
fri
Day

52°F
SW 6 mph
Precip.
100%
100%
Night

45°F
SW 7 mph
Precip.
100%
100%
27.12
sat
sat
Day

48°F
SW 8 mph
Precip.
77%
77%
Night

39°F
SW 9 mph
Precip.
0%
0%
28.12
sun
sun
Day

37°F
SW 9 mph
Precip.
0%
0%
Night

34°F
SW 7 mph
Precip.
0%
0%
29.12
mon
mon
Day

39°F
SW 4 mph
Precip.
0%
0%
Night

36°F
SW 6 mph
Precip.
0%
0%
30.12
tue
tue
Day

39°F
SW 7 mph
Precip.
0%
0%
Night

32°F
SW 12 mph
Precip.
0%
0%
31.12
wed
wed
Day

30°F
SW 14 mph
Precip.
25%
25%
Night

32°F
SW 11 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 56.6°F. The highest and lowest sea temperatures during the month were 57.9°F and 55.8°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 53.5°F. The highest and lowest sea temperatures during the month were 55.0°F and 52.0°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: 09:25
December 18, thursday
1200

48°F
N
2 mph
2 mph
1500

54°F
NE
2 mph
2 mph
1800

52°F
N
1 mph
1 mph
2100

50°F
NW
1 mph
1 mph
December 19, friday
0000

45°F
NE
1 mph
1 mph
0300

45°F
N
2 mph
2 mph
0600

45°F
N
2 mph
2 mph
0900

45°F
N
2 mph
2 mph



























