Portoroz weather by month

Check out Portoroz weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Portoroz (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
7°C maximum daytime temperature in January in Portoroz7
9°C maximum daytime temperature in February in Portoroz9
13°C maximum daytime temperature in March in Portoroz13
17°C maximum daytime temperature in April in Portoroz17
22°C maximum daytime temperature in May in Portoroz22
25°C maximum daytime temperature in June in Portoroz25
28°C maximum daytime temperature in July in Portoroz28
27°C maximum daytime temperature in August in Portoroz27
24°C maximum daytime temperature in September in Portoroz24
19°C maximum daytime temperature in October in Portoroz19
13°C maximum daytime temperature in November in Portoroz13
8°C maximum daytime temperature in December in Portoroz8
Min temperature (night-time)
1°C minimum night-time temperature in January in Portoroz1
2°C minimum night-time temperature in February in Portoroz2
4°C minimum night-time temperature in March in Portoroz4
8°C minimum night-time temperature in April in Portoroz8
12°C minimum night-time temperature in May in Portoroz12
15°C minimum night-time temperature in June in Portoroz15
18°C minimum night-time temperature in July in Portoroz18
17°C minimum night-time temperature in August in Portoroz17
14°C minimum night-time temperature in September in Portoroz14
10°C minimum night-time temperature in October in Portoroz10
5°C minimum night-time temperature in November in Portoroz5
2°C minimum night-time temperature in December in Portoroz2
Heat & Humidity
No heat & humidity in January in Portoroz0
No heat & humidity in February in Portoroz0
No heat & humidity in March in Portoroz0
No heat & humidity in April in Portoroz0
No heat & humidity in May in Portoroz0
No heat & humidity in June in Portoroz0
Low heat & humidity in July in PortorozL
Low heat & humidity in August in PortorozL
No heat & humidity in September in Portoroz0
No heat & humidity in October in Portoroz0
No heat & humidity in November in Portoroz0
No heat & humidity in December in Portoroz0
Sea temperature
10°C sea temperature in January in Portoroz10
9°C sea temperature in February in Portoroz9
10°C sea temperature in March in Portoroz10
12°C sea temperature in April in Portoroz12
18°C sea temperature in May in Portoroz18
22°C sea temperature in June in Portoroz22
24°C sea temperature in July in Portoroz24
25°C sea temperature in August in Portoroz25
22°C sea temperature in September in Portoroz22
19°C sea temperature in October in Portoroz19
16°C sea temperature in November in Portoroz16
12°C sea temperature in December in Portoroz12

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Portoroz

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Portoroz9
10 hours of daylight per day in February in Portoroz10
12 hours of daylight per day in March in Portoroz12
14 hours of daylight per day in April in Portoroz14
15 hours of daylight per day in May in Portoroz15
16 hours of daylight per day in June in Portoroz16
15 hours of daylight per day in July in Portoroz15
14 hours of daylight per day in August in Portoroz14
13 hours of daylight per day in September in Portoroz13
11 hours of daylight per day in October in Portoroz11
10 hours of daylight per day in November in Portoroz10
9 hours of daylight per day in December in Portoroz9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Portoroz1
UV (maximum) index 2 (Low) in February in Portoroz2
UV (maximum) index 3 (Moderate) in March in Portoroz3
UV (maximum) index 5 (Moderate) in April in Portoroz5
UV (maximum) index 7 (High) in May in Portoroz7
UV (maximum) index 8 (Very High) in June in Portoroz8
UV (maximum) index 8 (Very High) in July in Portoroz8
UV (maximum) index 7 (High) in August in Portoroz7
UV (maximum) index 5 (Moderate) in September in Portoroz5
UV (maximum) index 3 (Moderate) in October in Portoroz3
UV (maximum) index 1 (Low) in November in Portoroz1
UV (maximum) index 1 (Low) in December in Portoroz1

Rainfall in Portoroz

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
12 days with some rainfall in January in Portoroz12
11 days with some rainfall in February in Portoroz11
11 days with some rainfall in March in Portoroz11
13 days with some rainfall in April in Portoroz13
14 days with some rainfall in May in Portoroz14
14 days with some rainfall in June in Portoroz14
11 days with some rainfall in July in Portoroz11
11 days with some rainfall in August in Portoroz11
11 days with some rainfall in September in Portoroz11
11 days with some rainfall in October in Portoroz11
13 days with some rainfall in November in Portoroz13
12 days with some rainfall in December in Portoroz12
Average monthly rainfall (mm)
86 mm monthly rainfall in January in Portoroz86
78 mm monthly rainfall in February in Portoroz78
82 mm monthly rainfall in March in Portoroz82
101 mm monthly rainfall in April in Portoroz101
98 mm monthly rainfall in May in Portoroz98
115 mm monthly rainfall in June in Portoroz115
80 mm monthly rainfall in July in Portoroz80
109 mm monthly rainfall in August in Portoroz109
118 mm monthly rainfall in September in Portoroz118
110 mm monthly rainfall in October in Portoroz110
121 mm monthly rainfall in November in Portoroz121
99 mm monthly rainfall in December in Portoroz99

More about Portoroz

Portoroz by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Slovenia (Portoroz) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Portoroz?

Portoroz has a temperate climate with hot summers and some rainfall in all months.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Slovenia

Compare Portoroz with the USA

Below the Portoroz chart shows average maximum daytime temperature for Portoroz, Slovenia and the USA (Washington).

Maximum daytime temperature (°C)

Portoroz, Slovenia
USA (Washington)
7
5
9
7
13
13
17
19
22
24
25
29
28
31
27
30
24
26
19
20
13
14
8
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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