Verdict: Excellent month
Split Weather in September
September hits the sweet spot in Split — highs around 26°C (79°F), ideal for a full day on foot. Rain is occasional — about 8 wet days in a typical year. Overall, September is one of the best months of the year to be in Split.
Average high
26°C / 79°F
Average low
18°C / 64°F
Rain days
~8
Precipitation
143 mm
What to pack for Split in September
- Summer clothes, plus one light layer for air-con and evenings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Split: Jul (32°C / 90°F) · Coolest: Jan (12°C / 54°F) · Wettest: Dec (~14 rain days)
12°
4°
Jan
13°
5°
Feb
15°
7°
Mar
18°
9°
Apr
23°
15°
May
28°
19°
Jun
32°
22°
Jul
31°
23°
Aug
26°
18°
Sep
22°
14°
Oct
17°
10°
Nov
13°
7°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)