World Resorts Slovenia Portoroz Weather

Portoroz Sea Temperature in August

Average sea water temperature in August:
+78.6°F
Minimum sea water temperature in August: 84.7°F
Maximum sea water temperature in August: 74.3°F

Daily sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 77.2°F. The highest and lowest sea temperatures during the month were 79.5°F and 74.5°F.

Monthly sea water temperature in Portoroz, °F

Which Slovenia resorts have warmest sea in August?

Place name August 2025 August 2024
Portoroz 77.2°F 81.9°F
Piran 77.2°F 81.9°F
Strunjan 77.1°F 81.7°F
Isola 76.9°F 81.4°F
Koper 76.7°F 81.3°F
Bohinjsko Jezero 76.2°F 78.6°F
Cerkno 76.1°F 78.9°F
Dolenjske Toplice 74.0°F 78.8°F

Best time for vacation in Portoroz

Sunniest months:
August 23 days
July 22 days
June 20 days
Warmest months:
August 85.0 °F
July 84.9 °F
June 80.3 °F
Warmest sea temp:
August 78.7 °F
July 78.4 °F
September 74.2 °F
Coldest months:
January 45.6 °F
December 47.7 °F
February 48.3 °F
Rainiest months:
May 7 days
November 6 days
September 6 days
Windiest months:
February 6.5 mph
March 6.4 mph
November 6.1 mph

Portoroz on a weather map

Current weather
10:38
Portoroz
+48°F
N 2 mph
Feels like: +50°F
Precip.: 100%
Places in Slovenia:
Name
°F
Bohinjsko Jezero
+43°F
Dolenjske Toplice
+55°F
Zrece
+52°F
Isola
+54°F
Koper
+54°F
Kranjska Gora
+43°F
Ljubljana
+52°F
Maribor
+50°F
Moravske Toplice
+48°F
Piran
+54°F
Portoroz
+54°F
Rogaska Slatina
+52°F
Strunjan
+54°F
Terme Radenci
+50°F
Cerkno
+50°F
all places
24 Hours Forecast
Portoroz
Local time: 10:38
December 18, thursday
1200
54°F
N
2 mph
1500
54°F
E
2 mph
1800
52°F
N
2 mph
2100
46°F
N
1 mph
December 19, friday
0000
46°F
NE
2 mph
0300
46°F
N
2 mph
0600
46°F
N
2 mph
0900
46°F
NE
1 mph
Units of measurement: °C / °F