Slovenia in September

September is Slovenia's 6th-best month (rank 6 of 12): its 4 destinations average 66/100, led by Ljubljana at 85 — 23°C and 9 rainy days — while Piran is warmer at 27°C and scores 82.

#6 of 12 months for Slovenia · 4 destinations · updated September 2026 · climate normals from ERA5 reanalysis

🇸🇮 Slovenia, month by month

66/100 in September

Where in Slovenia in September

#	Place	Type	Feels-like high	Rain	Comfort	At its best
1	Ljubljana	City	23°C	183 mm · 9 days	85 tier A	Yes
2	Piran	Beach	27°C	173 mm · 11 days	82 tier A	—
3	Bled	City	21°C	183 mm · 14 days	78 tier B	—
4	Kranjska Gora	Ski resort	20°C	188 mm · 15 days	18 tier F	—

Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means September is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.

What's on in Slovenia in September

Bled Summer programme · Bled · 24 Jun – 13 Sep
Tartini Festival · Piran · 20 Aug – 5 Sep

Seasons in force

Sea warm enough · 2 places Summer season opens · 2 places Trail season · 2 places Harvest · 1 place

Better months for Slovenia

June · 70/100 April · 67/100 March · 66/100 Weakest: January · 56/100

← Slovenia in August Slovenia in October →Best time to visit Slovenia, month by month Compare: Ljubljana vs Piran in September