World Resorts Croatia Istria Weather

Istria sea water temperature

Current sea water temperature:
+79.5°F
Minimum sea water temperature in August: 82.8°F
Maximum sea water temperature in August: 73.6°F
Average sea water temperature in August: 78.2°F

Sea water temperature for the last 10 days:

August 25 79.5°F August 20 80.4°F
August 24 79.9°F August 19 79.5°F
August 23 80.4°F August 18 80.1°F
August 22 80.6°F August 17 79.9°F
August 21 80.4°F August 16 79.5°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 80.7°F. The highest and lowest sea temperatures during the month were 82.4°F and 79.5°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:
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.

Best time for vacation in Istria

Sunniest months:
August 24 days
July 23 days
June 21 days
Warmest months:
August 82.1 °F
July 81.3 °F
June 76.6 °F
Warmest sea temp:
August 78.2 °F
July 77.6 °F
September 73.6 °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
+77°F
N 13 mph
Feels like: +81°F
Precip.: 6%
Places in Croatia:
Name
°F
+79°F
+79°F
+82°F
+64°F
+81°F
+91°F
+75°F
+81°F
+77°F
+77°F
+73°F
+79°F
+81°F
+75°F
+73°F
24 Hours Forecast
Istria
Local time: 11:48
August 25, tuesday
1200
77°F
N
13 mph
1500
79°F
N
14 mph
1800
77°F
NE
7 mph
2100
75°F
W
2 mph
August 26, wednesday
0000
75°F
NW
5 mph
0300
73°F
W
5 mph
0600
72°F
SW
5 mph
0900
73°F
SW
2 mph

Best place for vacation:

Units of measurement: °C / °F