Portoroz weather live forecast

Today's maximum temperature in Portoroz is expected to be 29°C. Select a day from the live weather forecast for Portoroz, Slovenia for more weather parameters.

Sunday
24th May
29

15

15

UV7
Monday
25th May
31

17

13

UV6
Tuesday
26th May
31

18

14

UV8
Wednesday
27th May
31

18

8

UV8
Thursday
28th May
30

18

11

UV7

5-day weather forecast updated at 04:01 on Sunday 24th 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 24th May 2026

Expect clear skies in Portoroz, Slovenia with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

29
°C maximum temperature
15
°C minimum temperature
clear skies
15
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from NW

Portoroz weather for Monday 25th May 2026

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the east.

31
°C maximum temperature
17
°C minimum temperature
scattered clouds
13
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from E

Portoroz weather for Tuesday 26th May 2026

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

31
°C maximum temperature
18
°C minimum temperature
scattered clouds
14
hours of sunshine
UV8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from E

Portoroz weather for Wednesday 27th May 2026

Expect isolated thunderstorms in Portoroz, Slovenia with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 22% chance of some rain and a light breeze of 10 kph from the east.

31
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
UV8
UV index (Very High)
22
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from E

Portoroz weather for Thursday 28th May 2026

Expect isolated thunderstorms in Portoroz, Slovenia with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 11 kph from the east.