World Resorts Croatia Istria Weather

Istria Sea Temperature in December

Average sea water temperature in December:
+56.6°F
Minimum sea water temperature in December: 60.8°F
Maximum sea water temperature in December: 52.7°F

Daily 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.

Monthly sea water temperature in Istria, °F

Which Croatia resorts have warmest sea in December?

Place name December 2025 December 2024
Lastovo 63.8°F 62.8°F
Komiza 63.3°F 62.4°F
Korcula 62.7°F 62.1°F
Klek 62.5°F 61.8°F
Plat 62.5°F 61.9°F
Mlini 62.5°F 61.9°F
Hvar 62.4°F 62.2°F
Cavtat 62.4°F 61.8°F
Dubrovnik 62.0°F 61.6°F
Stari Grad 61.7°F 62.0°F
Dugi Otok 61.4°F 61.1°F
Molat 60.6°F 60.6°F
Biograd na Moru 60.5°F 60.0°F
Vodice 60.5°F 60.9°F
Skradin 60.2°F 61.0°F
Sibenik 60.1°F 60.9°F
Mali Losinj 59.6°F 60.1°F
Trogir 59.4°F 60.4°F
Supetar 59.1°F 60.8°F
Zadar 59.0°F 58.8°F

Best time for vacation in Istria

Sunniest months:
July 24 days
August 24 days
June 22 days
Warmest months:
August 82.1 °F
July 81.3 °F
June 76.5 °F
Warmest sea temp:
August 78.1 °F
July 77.5 °F
September 73.6 °F
Coldest months:
January 47.6 °F
February 49.0 °F
December 50.4 °F
Rainiest months:
November 6 days
September 6 days
May 6 days
Windiest months:
February 8.3 mph
November 8.1 mph
March 8.0 mph

Istria on a weather map

Istria
+55°F
NE 2 mph
Feels like: +55°F
Precip.: 75%
Places in Croatia:
Name
°F
+59°F
+59°F
+59°F
+52°F
+59°F
+55°F
+54°F
+59°F
+55°F
+55°F
+48°F
+54°F
+59°F
+61°F
+61°F
24 Hours Forecast
Istria
Local time: 10:34
December 18, thursday
1200
55°F
NE
2 mph
1500
54°F
SE
2 mph
1800
52°F
NE
1 mph
2100
52°F
W
1 mph
December 19, friday
0000
52°F
E
1 mph
0300
52°F
W
2 mph
0600
52°F
N
2 mph
0900
52°F
W
1 mph

Best place for vacation:

Units of measurement: °C / °F