Ljubljana City Municipality · Slovenia
Ljubljana in September
In September, Ljubljana averages a daytime high of 19 °C and a night-time low of 9 °C, with about 159 mm of rain over the month. Ljubljana has no month that is both mild and dry by the measure used here.
- Average high
- 19 °C
- Average low
- 9 °C
- Rain in the month
- 159 mm
- Daylight on 15 Sep
- 12 h 20 min
- Comfortable month
- No
- Places to stay
- 98
When to go
How September compares with the rest of the year in Ljubljana
September is the 4th warmest month in Ljubljana by average daytime high; across the year the highs run from 3 °C to 24 °C and the lows from -4 °C to 13 °C. By day, September is 5 °C cooler than August, and October is 5 °C cooler than September.
September brings 159 mm of rain, more than the monthly average of 119 mm (1434 mm a year); it is the wettest month.
On 15 September the sun is up for about 12 h 20 min, against 8 h 40 min at the shortest and 15 h 40 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 3 °C | -4 °C | 62 mm | |
| February | 4 °C | -4 °C | 73 mm | |
| March | 9 °C | 0 °C | 79 mm | |
| April | 14 °C | 3 °C | 106 mm | |
| May | 18 °C | 8 °C | 128 mm | |
| June | 22 °C | 11 °C | 153 mm | |
| July | 24 °C | 13 °C | 142 mm | |
| August | 24 °C | 13 °C | 149 mm | |
| September | 19 °C | 9 °C | 159 mm | |
| October | 14 °C | 6 °C | 151 mm | |
| November | 8 °C | 1 °C | 131 mm | |
| December | 3 °C | -4 °C | 100 mm |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is September a good time to visit Ljubljana?
Not by the measure used here: about 159 mm of rain is 80 mm or more. No month in Ljubljana meets it.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
When to go
Destinations near Ljubljana that are comfortable in September
Within 300 km, nearest first, by the same measure.
Where to stay
Where to stay in Ljubljana
This guide lists 98 places to stay in Ljubljana: 1 chain property with its details and own websites, and 97 hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 39; 1–3 km, 10; 3–10 km, 19; 10 km or more, 30.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; places to stay from each operator's own public pages and Wikidata. How this guide is made.