Split · Month comparison

May vs September

September ranks #1 overall vs May at #3. Croatia's best-kept secret: June-quality weather, dramatically lower crowds, moderate prices.

Split May — a woman with a backpack hiking stone steps through the dense green forest of Marjan Hill above the city

May

#3 of 12 months

Best match

The best all-round month: 22°C, 9 sun hours, full season operating, manageable crowds.

  • ↑Full season operating: all restaurants, tours, ferries, water sports, and island boats running
  • ↑22°C and 9 sunshine hours — ideal for the Riva, Marjan Hill hiking, and ferry day trips
Split September — aerial view of Split's red-tiled rooftops and cathedral bell tower with the mountains and Adriatic beyond

September

#1 of 12 months

Best match

Croatia's best-kept secret: June-quality weather, dramatically lower crowds, moderate prices.

  • ↑26°C and sea at 25°C — same conditions as June but with a fraction of the crowds
  • ↑Diocletian's Palace navigable at all hours without July's overwhelming pressure
FactorMaySeptember
Weather score
8
9
Value score
6
5
Crowd score
7
5
Events score
5
6
Atmosphere
8
9
Avg high temp22°C26°C
Monthly rain55mm67mm
Daily sunshine9hrs8hrs

May trade-offs

  • ↓Prices climbing: 30–40% above low season as demand builds
  • ↓55mm: lighter than winter but afternoon showers still possible
  • ↓Weekend crowds increasing — Friday and Saturday evenings in the Palace can feel busy

September trade-offs

  • ↓First autumn rains returning: 67mm — some September afternoons turn wet unexpectedly
  • ↓Early September still relatively busy; the significant drop comes in mid-to-late September
  • ↓Island ferry frequencies beginning to reduce from summer maximums
See all 12 months for Split →May in detail →September in detail →
Scores compare months within Split. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →