18.03
wed
wed
Day
50°F
SW 17 mph
Precip.
0%
0%
Night
50°F
SW 13 mph
Precip.
0%
0%
19.03
thu
thu
Day
57°F
SW 16 mph
Precip.
0%
0%
Night
46°F
W 11 mph
Precip.
0%
0%
20.03
fri
fri
Day
57°F
SW 8 mph
Precip.
0%
0%
Night
43°F
SW 4 mph
Precip.
0%
0%
21.03
sat
sat
Day
57°F
SW 3 mph
Precip.
0%
0%
Night
43°F
W 5 mph
Precip.
0%
0%
22.03
sun
sun
Day
57°F
SE 2 mph
Precip.
70%
70%
Night
43°F
W 6 mph
Precip.
0%
0%
23.03
mon
mon
Day
59°F
SW 9 mph
Precip.
0%
0%
Night
45°F
W 4 mph
Precip.
0%
0%
24.03
tue
tue
Day
59°F
NE 6 mph
Precip.
0%
0%
Night
48°F
W 3 mph
Precip.
0%
0%
25.03
wed
wed
Day
61°F
SE 4 mph
Precip.
0%
0%
Night
48°F
W 3 mph
Precip.
0%
0%
26.03
thu
thu
Day
61°F
E 4 mph
Precip.
0%
0%
Night
48°F
W 2 mph
Precip.
0%
0%
27.03
fri
fri
Day
64°F
E 4 mph
Precip.
0%
0%
Night
48°F
NW 3 mph
Precip.
0%
0%
28.03
sat
sat
Day
50°F
SW 10 mph
Precip.
100%
100%
Night
41°F
W 3 mph
Precip.
27%
27%
29.03
sun
sun
Day
52°F
S 5 mph
Precip.
58%
58%
Night
41°F
NW 2 mph
Precip.
0%
0%
30.03
mon
mon
Day
54°F
E 4 mph
Precip.
0%
0%
Night
48°F
W 7 mph
Precip.
100%
100%
31.03
tue
tue
Day
45°F
W 11 mph
Precip.
100%
100%
Night
45°F
SW 15 mph
Precip.
100%
100%
sea water
temperature
temperature
| Portoroz |
monthly
weather
weather
| Portoroz |
current
weather
weather
| Portoroz |
7 days
forecast
forecast
| Portoroz |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 52.1°F. The highest and lowest sea temperatures during the month were 54.0°F and 49.5°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 56.5°F. The highest and lowest sea temperatures during the month were 62.1°F and 52.3°F.
Air temperature in Portoroz, °F
Precipitation total in Portoroz, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Portoroz
Portoroz on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Portoroz
Local time: 06:41
March 18, wednesday
0900
46°F
SW
17 mph
17 mph
1200
50°F
SW
17 mph
17 mph
1500
54°F
SW
19 mph
19 mph
1800
52°F
SW
14 mph
14 mph
2100
50°F
SW
12 mph
12 mph
March 19, thursday
0000
50°F
SW
13 mph
13 mph
0300
50°F
SW
13 mph
13 mph
0600
46°F
SW
14 mph
14 mph
