September · typical climate, not a forecast
Julian Alps in September
Slovenia
Workable
19°C day · 9°C night · 43% rain · 12h daylight · moderate crowds · €1,020 estimated
Live · Julian Alps
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Live · Tallinn (you)
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Cool Score breakdown
Scored for 5 nights from Tallinn in September.
- Temperature fit92
18.8°C typical high vs your 12–20°C window
w 26 - Heat escape0
2.5°C warmer than Tallinn
w 14 - Rain probability64
43% chance of rain on an average day
w 11 - Daylight hours59
12.3h of daylight mid-month
w 8 - Outdoor conditions76
Comfortable for a full day outside at 18.8°C
w 10 - Crowding52
Moderate crowds for this month
w 8 - Flight + stay cost83
≈€1020 estimated for 5 nights vs €1000 budget
w 12 - Nature access90
9/10 — wild ground within reach
w 6 - City atmosphere62
5/10 urban texture · 8/10 food scene
w 4
Why Julian Alps in September
The Soča valley runs meltwater-cold all through August.
- Soča river gorges
- Triglav trails
- Emerald-water rafting
What September in Julian Alps is actually like
In September, Julian Alps sits around 19°C by day and drops to about 9°C after dark, so a light layer earns its place in the bag even in high summer. That is roughly 2°C warmer than Tallinn at the same time of year — the difference between planning your day around the shade and simply walking out of the door.
Expect rain on roughly 43% of days, usually passing rather than persistent, and about 12 hours of daylight to spend outside. Crowds are moderate crowds this month, and a 5-night trip from Tallinn works out at around €1,020 including flights, a mid-range stay and everyday spending.
The Soča valley runs meltwater-cold all through August. Days here tend to fill up with soča river gorges, triglav trails, emerald-water rafting — which is why Julian Alps scores 66 out of 100 for september: workable.
Other months
Compare the typical climate month by month.