Measurements:
°C
°F
CURRENT WEATHER
19:38
Portoroz
50°F
SW 3 mph
Feels like: 48°F
Precip: 0%
World Resorts Slovenia Portoroz Weather

7 Day Weather Forecast

05.15
fri
DAY
58°F
N 11 mph
precip
100%
NIGHT
48°F
W 3 mph
precip
0%
05.16
sat
DAY
54°F
SW 9 mph
precip
100%
NIGHT
46°F
NW 4 mph
precip
0%
05.17
sun
DAY
66°F
E 6 mph
precip
100%
NIGHT
50°F
W 4 mph
precip
0%
05.18
mon
DAY
72°F
E 5 mph
precip
0%
NIGHT
52°F
W 3 mph
precip
0%
05.19
tue
DAY
72°F
SE 5 mph
precip
73%
NIGHT
56°F
W 6 mph
precip
0%
05.20
wed
DAY
74°F
NW 4 mph
precip
0%
NIGHT
56°F
W 4 mph
precip
0%
05.21
thu
DAY
76°F
SE 4 mph
precip
0%
NIGHT
58°F
W 4 mph
precip
0%

Portoroz Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Portoroz was 16.9°F. The maximum and minimum values were 15.1°F and 18.4°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 45.0 °F
December 47.7 °F
February 48.4 °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