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The temperatures in Split in September are comfortable with low of 18°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Split during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Split in September 2025.
If you’re planning to visit Split in the near future, we highly recommend that you review the 14 day weather forecast for Split before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 10° / 5° | 6 | 25 | 0 | 116 mm | Ok | Split in January |
| February | 11° / 6° | 6 | 21 | 1 | 113 mm | Ok | Split in February |
| March | 13° / 7° | 5 | 26 | 0 | 86 mm | Ok | Split in March |
| April | 17° / 10° | 5 | 25 | 0 | 82 mm | Good | Split in April |
| May | 21° / 14° | 5 | 26 | 0 | 76 mm | Good | Split in May |
| June | 25° / 17° | 3 | 27 | 0 | 73 mm | Perfect | Split in June |
| July | 28° / 20° | 3 | 28 | 0 | 48 mm | Perfect | Split in July |
| August | 29° / 21° | 2 | 29 | 0 | 30 mm | Good | Split in August |
| September | 25° / 18° | 4 | 26 | 0 | 93 mm | Perfect | Split in September |
| October | 20° / 14° | 4 | 27 | 0 | 100 mm | Good | Split in October |
| November | 16° / 11° | 6 | 24 | 0 | 155 mm | Good | Split in November |
| December | 11° / 7° | 6 | 25 | 0 | 120 mm | Ok | Split in December |