Current sea water temperature:
+55.9°F
| Minimum sea water temperature in December: | 60.8°F |
| Maximum sea water temperature in December: | 52.7°F |
| Average sea water temperature in December: | 56.6°F |
| more information | |
14 days
forecast
forecast
| Istria |
monthly
weather
weather
| Istria |
Sea water temperature for the last 10 days:
| December 24 | 55.9°F | December 19 | 56.5°F |
| December 23 | 56.3°F | December 18 | 56.5°F |
| December 22 | 56.7°F | December 17 | 56.8°F |
| December 21 | 56.5°F | December 16 | 56.8°F |
| December 20 | 56.1°F | December 15 | 56.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Istria?
Based on the data about daily sea water temperature for the last three years the warmest sea in Istria was noticed in August, July and September.
Monthly Sea Temperatures in Istria, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 76.5°F. The highest and lowest sea temperatures during the month were 78.4°F and 75.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 77.9°F. The highest and lowest sea temperatures during the month were 80.1°F and 76.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 74.8°F. The highest and lowest sea temperatures during the month were 76.5°F and 72.7°F.
current
weather
weather
| Istria |
weather in
December
December
| Istria |
Best time for vacation in Istria
Istria on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Istria
Local time: 07:25
December 25, thursday
0900
43°F
SW
11 mph
11 mph
1200
48°F
SW
9 mph
9 mph
1500
48°F
SW
9 mph
9 mph
1800
45°F
SW
9 mph
9 mph
2100
41°F
W
5 mph
5 mph
December 26, friday
0000
41°F
SW
6 mph
6 mph
0300
39°F
W
5 mph
5 mph
0600
39°F
W
7 mph
7 mph
