When is the best time to go to Slovenia?
When is the best time to go to Slovenia? Here's some information to help you in your decision:
- In Slovenia, the weather is good everywhere in August and September
- The best months to go to Ljubljana are May, June, July, August and September
- On average, the warmest months in Ljubljana are June, July and August, and the coldest month of the year is February
- The rainiest months in this city are February, May, June, July, September and December
- The cities with the best climate are Koper, Piran, Portorož, Nova Gorica and Sežana, with good weather at least 7 months a year
- The best months for swimming in Koper are June, July, August and September
For information about the climate and the weather city by city in Slovenia for a specific month, click on the corresponding line below:
Month | Average temp. | Rainfall | Our opinion | View Details |
---|---|---|---|---|
January | -1°C to 7°C | 110mm | very bad | Slovenia in january |
February | -1°C to 7°C | 143mm | very bad | Slovenia in february |
March | 4°C to 11°C | 110mm | very bad to bad* | Slovenia in march |
April | 9°C to 16°C | 112mm | bad to good* | Slovenia in april |
May | 14°C to 20°C | 172mm | tolerable to good* | Slovenia in may |
June | 18°C to 25°C | 180mm | tolerable to good* | Slovenia in june |
July | 20°C to 28°C | 158mm | tolerable to good* | Slovenia in july |
August | 20°C to 28°C | 126mm | good | Slovenia in august |
September | 15°C to 22°C | 178mm | good | Slovenia in september |
October | 9°C to 16°C | 121mm | bad to good* | Slovenia in october |
November | 5°C to 13°C | 150mm | very bad to tolerable* | Slovenia in november |
December | 1°C to 8°C | 131mm | very bad to bad* | Slovenia in december |
When to go to Slovenia by city
Best time to go to Ljubljana
The best months to go to Ljubljana are may, june, july, august and september.
Best time to go to Koper
The best months to go to Koper are april, may, june, july, august, september and october.
Best time to go to Kranjska Gora
The best months to go to Kranjska Gora are august and september.
Climate and Weather in Slovenia

Best time to go to Ljubljana
The best months to go to Ljubljana are may, june, july, august and september.

Best time to go to Koper
The best months to go to Koper are april, may, june, july, august, september and october.

Best time to go to Kranjska Gora
The best months to go to Kranjska Gora are august and september.
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Temperatures and rainfall in Slovenia
On these 3 graphs, we present the evolution of temperatures of Slovenia and month-by-month rainfall for the cities of Ljubljana, Bled, Bovec, Koper and Kranjska Gora, as well as the month-by-month sea temperature for coastal cities..
Where to go in Slovenia?
This table allows you to see the maximum temperature for each city and our opinion on the weather month by month (see colour legend below the table).
Legend:
Map of Slovenia
Hover over cities for information about the weather.

About Slovenia
What can I do in Slovenia?
Beaches / swimming
Nature and countryside
Culture and heritage
Sports
Family travel
Crafts / shopping
Gastronomy
Nightlife
Is this weather information for Slovenia reliable?
Climate data for Slovenia has been gathered every day since January 2009. The analysis of these meteorological data for Slovenia allows us to determine the average for each month in Ljubljana, Bled, Bovec, Koper, Kranjska Gora, Maribor, Piran, Portorož, and 26 other cities.
So yes: this data is reliable except in cases of temporary climate disruption in the region.