Portoroz weather live forecast

Today's maximum temperature in Portoroz is expected to be 20°C. Select a day from the live weather forecast for Portoroz, Slovenia for more weather parameters.

Sunday
17th May
20

8

13

6
Monday
18th May
21

9

11

6
Tuesday
19th May
21

11

10

6
Wednesday
20th May
23

11

9

6
Thursday
21st May
25

13

10

7

5-day weather forecast updated at 04:01 on Sunday 17th May 2026 GMT

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The 5-day weather forecast for Slovenia (Portoroz) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Portoroz weather forecast by day

Below are the detailed weather forecasts for Portoroz for the next 5 days.

Portoroz weather for Sunday 17th May 2026

Expect clear skies in Portoroz, Slovenia with a maximum temperature of 20°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

20
°C maximum temperature
8
°C minimum temperature
clear skies
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from E

Portoroz weather for Monday 18th May 2026

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 21°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-east.

21
°C maximum temperature
9
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
10
kph wind from SE

Portoroz weather for Tuesday 19th May 2026

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 21°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-west.

21
°C maximum temperature
11
°C minimum temperature
scattered clouds
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from NW

Portoroz weather for Wednesday 20th May 2026

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 23°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

23
°C maximum temperature
11
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
23
°C wind chill
10
kph wind from E

Portoroz weather for Thursday 21st May 2026

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 25°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.