18.12
thu
thu
Day
55°F
NE 2 mph
Precip.
75%
75%
Night
52°F
E 1 mph
Precip.
68%
68%
19.12
fri
fri
Day
54°F
NW 2 mph
Precip.
0%
0%
Night
54°F
S 3 mph
Precip.
71%
71%
20.12
sat
sat
Day
55°F
S 7 mph
Precip.
0%
0%
Night
50°F
W 3 mph
Precip.
0%
0%
21.12
sun
sun
Day
54°F
SW 3 mph
Precip.
0%
0%
Night
52°F
SW 4 mph
Precip.
0%
0%
22.12
mon
mon
Day
54°F
NW 11 mph
Precip.
100%
100%
Night
54°F
N 10 mph
Precip.
100%
100%
23.12
tue
tue
Day
55°F
NW 8 mph
Precip.
82%
82%
Night
52°F
SW 7 mph
Precip.
100%
100%
24.12
wed
wed
Day
52°F
NE 8 mph
Precip.
100%
100%
Night
50°F
W 4 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 57.6°F. The highest and lowest sea temperatures during the month were 58.5°F and 56.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 52.7°F. The highest and lowest sea temperatures during the month were 53.8°F and 51.4°F.
Air temperature in Istria, °F
Precipitation total in Istria, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Istria
Istria on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Istria
Local time: 09:17
December 18, thursday
1200
55°F
NE
2 mph
2 mph
1500
54°F
SE
2 mph
2 mph
1800
52°F
NE
1 mph
1 mph
2100
52°F
W
1 mph
1 mph
December 19, friday
0000
52°F
E
1 mph
1 mph
0300
52°F
W
2 mph
2 mph
0600
52°F
N
2 mph
2 mph
0900
52°F
W
1 mph
1 mph
