Slovenia weather by month

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °C
2°C maximum daytime temperature in January in Ljubljana2
5°C maximum daytime temperature in February in Ljubljana5
10°C maximum daytime temperature in March in Ljubljana10
15°C maximum daytime temperature in April in Ljubljana15
20°C maximum daytime temperature in May in Ljubljana20
23°C maximum daytime temperature in June in Ljubljana23
26°C maximum daytime temperature in July in Ljubljana26
25°C maximum daytime temperature in August in Ljubljana25
21°C maximum daytime temperature in September in Ljubljana21
16°C maximum daytime temperature in October in Ljubljana16
8°C maximum daytime temperature in November in Ljubljana8
3°C maximum daytime temperature in December in Ljubljana3
Hours of sunshine (daily)
Days with some rainfall
12 days with some rainfall in January in Ljubljana12
12 days with some rainfall in February in Ljubljana12
13 days with some rainfall in March in Ljubljana13
15 days with some rainfall in April in Ljubljana15
16 days with some rainfall in May in Ljubljana16
16 days with some rainfall in June in Ljubljana16
15 days with some rainfall in July in Ljubljana15
14 days with some rainfall in August in Ljubljana14
12 days with some rainfall in September in Ljubljana12
12 days with some rainfall in October in Ljubljana12
13 days with some rainfall in November in Ljubljana13
12 days with some rainfall in December in Ljubljana12

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Slovenia by month

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

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The climate guide for Slovenia (Ljubljana) 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.

Slovenia climate overview

Slovenia lies close to one of the world's most beautiful coastlines, edging the Adriatic Sea, but sadly only has a tiny stretch of it within its borders. The Julian Alps experience heavy summer rain and ferocious snowfalls in winter. On lower ground, summer temperatures are high and conditions very sunny, but sudden, fierce thunderstorms can provide dramatic interruptions.

If travelling in the winter, beware sporadic visits from the nasty Bora wind, which whistles in icy blasts from Eastern Europe.

What to pack for Slovenia

Light summer clothing should be supplemented with rainwear. In winter, take much warmer clothing.

Slovenia temperature by month

Compare the average temperature by month for popular destinations in Slovenia. Select a place from below to see more long term weather averages by month.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Bled
1°C maximum daytime temperature in January in Bled1
3°C maximum daytime temperature in February in Bled3
6°C maximum daytime temperature in March in Bled6
10°C maximum daytime temperature in April in Bled10
16°C maximum daytime temperature in May in Bled16
19°C maximum daytime temperature in June in Bled19
21°C maximum daytime temperature in July in Bled21
21°C maximum daytime temperature in August in Bled21
17°C maximum daytime temperature in September in Bled17
12°C maximum daytime temperature in October in Bled12
6°C maximum daytime temperature in November in Bled6
2°C maximum daytime temperature in December in Bled2
Bohinj
1°C maximum daytime temperature in January in Bohinj1
2°C maximum daytime temperature in February in Bohinj2
6°C maximum daytime temperature in March in Bohinj6
10°C maximum daytime temperature in April in Bohinj10
15°C maximum daytime temperature in May in Bohinj15
18°C maximum daytime temperature in June in Bohinj18
21°C maximum daytime temperature in July in Bohinj21
20°C maximum daytime temperature in August in Bohinj20
17°C maximum daytime temperature in September in Bohinj17
12°C maximum daytime temperature in October in Bohinj12
6°C maximum daytime temperature in November in Bohinj6
2°C maximum daytime temperature in December in Bohinj2
Kranjska Gora
-1°C maximum daytime temperature in January in Kranjska Gora-1
0°C maximum daytime temperature in February in Kranjska Gora0
2°C maximum daytime temperature in March in Kranjska Gora2
6°C maximum daytime temperature in April in Kranjska Gora6
11°C maximum daytime temperature in May in Kranjska Gora11
14°C maximum daytime temperature in June in Kranjska Gora14
17°C maximum daytime temperature in July in Kranjska Gora17
17°C maximum daytime temperature in August in Kranjska Gora17
14°C maximum daytime temperature in September in Kranjska Gora14
9°C maximum daytime temperature in October in Kranjska Gora9
3°C maximum daytime temperature in November in Kranjska Gora3
0°C maximum daytime temperature in December in Kranjska Gora0
Ljubljana
2°C maximum daytime temperature in January in Ljubljana2
5°C maximum daytime temperature in February in Ljubljana5
10°C maximum daytime temperature in March in Ljubljana10
15°C maximum daytime temperature in April in Ljubljana15
20°C maximum daytime temperature in May in Ljubljana20
23°C maximum daytime temperature in June in Ljubljana23
26°C maximum daytime temperature in July in Ljubljana26
25°C maximum daytime temperature in August in Ljubljana25
21°C maximum daytime temperature in September in Ljubljana21
16°C maximum daytime temperature in October in Ljubljana16
8°C maximum daytime temperature in November in Ljubljana8
3°C maximum daytime temperature in December in Ljubljana3
Maribor
2°C maximum daytime temperature in January in Maribor2
4°C maximum daytime temperature in February in Maribor4
9°C maximum daytime temperature in March in Maribor9
14°C maximum daytime temperature in April in Maribor14
19°C maximum daytime temperature in May in Maribor19
22°C maximum daytime temperature in June in Maribor22
24°C maximum daytime temperature in July in Maribor24
24°C maximum daytime temperature in August in Maribor24
20°C maximum daytime temperature in September in Maribor20
15°C maximum daytime temperature in October in Maribor15
8°C maximum daytime temperature in November in Maribor8
3°C maximum daytime temperature in December in Maribor3
Portoroz
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

All Slovenia destinations

Slovenia weather averages by month

Temperature in Slovenia (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
2°C maximum daytime temperature in January in Slovenia (Ljubljana)2
5°C maximum daytime temperature in February in Slovenia (Ljubljana)5
10°C maximum daytime temperature in March in Slovenia (Ljubljana)10
15°C maximum daytime temperature in April in Slovenia (Ljubljana)15
20°C maximum daytime temperature in May in Slovenia (Ljubljana)20
23°C maximum daytime temperature in June in Slovenia (Ljubljana)23
26°C maximum daytime temperature in July in Slovenia (Ljubljana)26
25°C maximum daytime temperature in August in Slovenia (Ljubljana)25
21°C maximum daytime temperature in September in Slovenia (Ljubljana)21
16°C maximum daytime temperature in October in Slovenia (Ljubljana)16
8°C maximum daytime temperature in November in Slovenia (Ljubljana)8
3°C maximum daytime temperature in December in Slovenia (Ljubljana)3
Min temperature (night-time)
-4°C minimum night-time temperature in January in Slovenia (Ljubljana)-4
-2°C minimum night-time temperature in February in Slovenia (Ljubljana)-2
1°C minimum night-time temperature in March in Slovenia (Ljubljana)1
4°C minimum night-time temperature in April in Slovenia (Ljubljana)4
9°C minimum night-time temperature in May in Slovenia (Ljubljana)9
12°C minimum night-time temperature in June in Slovenia (Ljubljana)12
14°C minimum night-time temperature in July in Slovenia (Ljubljana)14
13°C minimum night-time temperature in August in Slovenia (Ljubljana)13
11°C minimum night-time temperature in September in Slovenia (Ljubljana)11
6°C minimum night-time temperature in October in Slovenia (Ljubljana)6
1°C minimum night-time temperature in November in Slovenia (Ljubljana)1
-3°C minimum night-time temperature in December in Slovenia (Ljubljana)-3
Heat & Humidity
No heat & humidity in January in Slovenia (Ljubljana)0
No heat & humidity in February in Slovenia (Ljubljana)0
No heat & humidity in March in Slovenia (Ljubljana)0
No heat & humidity in April in Slovenia (Ljubljana)0
No heat & humidity in May in Slovenia (Ljubljana)0
No heat & humidity in June in Slovenia (Ljubljana)0
Low heat & humidity in July in Slovenia (Ljubljana)L
Low heat & humidity in August in Slovenia (Ljubljana)L
No heat & humidity in September in Slovenia (Ljubljana)0
No heat & humidity in October in Slovenia (Ljubljana)0
No heat & humidity in November in Slovenia (Ljubljana)0
No heat & humidity in December in Slovenia (Ljubljana)0

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

Sunshine & UV index in Slovenia

  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 Slovenia (Ljubljana)9
10 hours of daylight per day in February in Slovenia (Ljubljana)10
12 hours of daylight per day in March in Slovenia (Ljubljana)12
14 hours of daylight per day in April in Slovenia (Ljubljana)14
15 hours of daylight per day in May in Slovenia (Ljubljana)15
16 hours of daylight per day in June in Slovenia (Ljubljana)16
15 hours of daylight per day in July in Slovenia (Ljubljana)15
14 hours of daylight per day in August in Slovenia (Ljubljana)14
13 hours of daylight per day in September in Slovenia (Ljubljana)13
11 hours of daylight per day in October in Slovenia (Ljubljana)11
9 hours of daylight per day in November in Slovenia (Ljubljana)9
9 hours of daylight per day in December in Slovenia (Ljubljana)9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Slovenia (Ljubljana)1
UV (maximum) index 2 (Low) in February in Slovenia (Ljubljana)2
UV (maximum) index 3 (Moderate) in March in Slovenia (Ljubljana)3
UV (maximum) index 5 (Moderate) in April in Slovenia (Ljubljana)5
UV (maximum) index 7 (High) in May in Slovenia (Ljubljana)7
UV (maximum) index 8 (Very High) in June in Slovenia (Ljubljana)8
UV (maximum) index 8 (Very High) in July in Slovenia (Ljubljana)8
UV (maximum) index 7 (High) in August in Slovenia (Ljubljana)7
UV (maximum) index 5 (Moderate) in September in Slovenia (Ljubljana)5
UV (maximum) index 3 (Moderate) in October in Slovenia (Ljubljana)3
UV (maximum) index 1 (Low) in November in Slovenia (Ljubljana)1
UV (maximum) index 1 (Low) in December in Slovenia (Ljubljana)1

Rainfall in Slovenia

  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 Slovenia (Ljubljana)12
12 days with some rainfall in February in Slovenia (Ljubljana)12
13 days with some rainfall in March in Slovenia (Ljubljana)13
15 days with some rainfall in April in Slovenia (Ljubljana)15
16 days with some rainfall in May in Slovenia (Ljubljana)16
16 days with some rainfall in June in Slovenia (Ljubljana)16
15 days with some rainfall in July in Slovenia (Ljubljana)15
14 days with some rainfall in August in Slovenia (Ljubljana)14
12 days with some rainfall in September in Slovenia (Ljubljana)12
12 days with some rainfall in October in Slovenia (Ljubljana)12
13 days with some rainfall in November in Slovenia (Ljubljana)13
12 days with some rainfall in December in Slovenia (Ljubljana)12
Average monthly rainfall (mm)
78 mm monthly rainfall in January in Slovenia (Ljubljana)78
76 mm monthly rainfall in February in Slovenia (Ljubljana)76
94 mm monthly rainfall in March in Slovenia (Ljubljana)94
106 mm monthly rainfall in April in Slovenia (Ljubljana)106
116 mm monthly rainfall in May in Slovenia (Ljubljana)116
152 mm monthly rainfall in June in Slovenia (Ljubljana)152
126 mm monthly rainfall in July in Slovenia (Ljubljana)126
139 mm monthly rainfall in August in Slovenia (Ljubljana)139
127 mm monthly rainfall in September in Slovenia (Ljubljana)127
113 mm monthly rainfall in October in Slovenia (Ljubljana)113
133 mm monthly rainfall in November in Slovenia (Ljubljana)133
96 mm monthly rainfall in December in Slovenia (Ljubljana)96

Compare Slovenia weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Slovenia (Ljubljana) and the UK (London).

Maximum daytime temperature (°C)

Slovenia (Ljubljana)
UK (London)
2
7
5
7
10
10
15
13
20
17
23
20
26
22
25
22
21
19
16
15
8
10
3
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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