Measurements:
°C
°F
CURRENT WEATHER
07:01
Portoroz
40°F
W 4 mph
Feels like: 38°F
Precip: 0%
World Resorts Slovenia Portoroz Weather

7 Day Weather Forecast

12.16
tue
DAY
54°F
W 2 mph
precip
0%
NIGHT
44°F
W 4 mph
precip
100%
12.17
wed
DAY
50°F
W 3 mph
precip
100%
NIGHT
48°F
N 2 mph
precip
62%
12.18
thu
DAY
54°F
E 1 mph
precip
70%
NIGHT
46°F
W 1 mph
precip
0%
12.19
fri
DAY
54°F
E 2 mph
precip
0%
NIGHT
42°F
SW 1 mph
precip
0%
12.20
sat
DAY
52°F
SE 1 mph
precip
0%
NIGHT
44°F
W 3 mph
precip
0%
12.21
sun
DAY
52°F
W 1 mph
precip
55%
NIGHT
46°F
W 2 mph
precip
100%
12.22
mon
DAY
56°F
NW 4 mph
precip
0%
NIGHT
48°F
W 4 mph
precip
22%

Portoroz Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Portoroz was 13.9°F. The maximum and minimum values were 13.2°F and 14.4°F respectively.

Portoroz on the Weather Map

Best Time to Visit Portoroz
The most sunny months:
August 23 days
July 22 days
June 20 days
The most warm months:
August 88.9 °F
July 88.7 °F
June 83.6 °F
Warmest sea temperature:
August 81.9 °F
July 81.5 °F
September 76.9 °F
The most cold months:
January 45.1 °F
December 47.5 °F
February 48.2 °F
The most rainy months:
May 7 days
November 6 days
September 6 days
The most windy months:
February 6 mph
March 6 mph
November 6 mph
more details