Current sea water temperature:
+62.8°F
| Minimum sea water temperature in May: | 71.6°F |
| Maximum sea water temperature in May: | 57.2°F |
| Average sea water temperature in May: | 63.3°F |
| more information | |
14 days
forecast
forecast
| Istria |
monthly
weather
weather
| Istria |
Sea water temperature for the last 10 days:
| May 16 | 62.8°F | May 11 | 63.1°F |
| May 15 | 62.4°F | May 10 | 62.8°F |
| May 14 | 62.6°F | May 9 | 62.6°F |
| May 13 | 62.8°F | May 8 | 62.1°F |
| May 12 | 63.5°F | May 7 | 61.5°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
May
May
| Istria |
Best time for vacation in Istria
Istria on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Istria
Local time: 22:56
May 17, sunday
0000
55°F
SE
1 mph
1 mph
0300
52°F
W
6 mph
6 mph
0600
52°F
W
5 mph
5 mph
0900
59°F
NW
4 mph
4 mph
1200
61°F
NE
6 mph
6 mph
1500
64°F
NE
8 mph
8 mph
1800
63°F
N
5 mph
5 mph
2100
57°F
NW
3 mph
3 mph
