World Resorts Croatia Istria Weather

Istria sea water temperature

Current sea water temperature:
+68.5°F
Minimum sea water temperature in October: 73.0°F
Maximum sea water temperature in October: 61.9°F
Average sea water temperature in October: 67.5°F

Sea water temperature for the last 10 days:

October 24 68.5°F October 19 69.1°F
October 23 68.5°F October 18 69.3°F
October 22 69.3°F October 17 69.4°F
October 21 69.1°F October 16 69.6°F
October 20 69.1°F October 15 69.6°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:
2026
2025
2024

The average sea water temperature in August of 2026 was 80.5°F. The highest and lowest sea temperatures during the month were 82.4°F and 79.0°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 78.9°F. The highest and lowest sea temperatures during the month were 82.0°F and 77.4°F.

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 76.6°F. The highest and lowest sea temperatures during the month were 80.4°F and 72.5°F.

Best time for vacation in Istria

Sunniest months:
August 24 days
July 23 days
June 21 days
Warmest months:
August 82.2 °F
July 81.3 °F
June 76.6 °F
Warmest sea temp:
August 78.2 °F
July 77.6 °F
September 73.8 °F
Coldest months:
January 47.5 °F
February 49.2 °F
December 50.5 °F
Rainiest months:
November 6 days
September 6 days
May 5 days
Windiest months:
February 8.2 mph
November 8.1 mph
March 7.9 mph

Istria on a weather map

Istria
+55°F
SW 11 mph
Feels like: +54°F
Precip.: 21%
Places in Croatia:
Name
°F
+61°F
+61°F
+59°F
+50°F
+59°F
+55°F
+57°F
+52°F
+61°F
+55°F
+50°F
+50°F
+54°F
+61°F
+52°F
24 Hours Forecast
Istria
Local time: 18:16
October 24, saturday
2100
54°F
W
11 mph
October 25, sunday
0000
54°F
SW
8 mph
0300
52°F
SW
11 mph
0600
52°F
SW
11 mph
0900
55°F
S
10 mph
1200
57°F
S
12 mph
1500
57°F
SE
9 mph
1800
57°F
SE
4 mph

Best place for vacation:

Units of measurement: °C / °F