21.09
mon
mon
Day
79°F
NE 6 mph
Precip.
11%
11%
Night
64°F
SW 11 mph
Precip.
19%
19%
22.09
tue
tue
Day
70°F
SW 7 mph
Precip.
1%
1%
Night
57°F
SW 9 mph
Precip.
2%
2%
23.09
wed
wed
Day
68°F
S 5 mph
Precip.
0%
0%
Night
59°F
SW 8 mph
Precip.
2%
2%
24.09
thu
thu
Day
68°F
NE 6 mph
Precip.
8%
8%
Night
61°F
W 9 mph
Precip.
52%
52%
25.09
fri
fri
Day
57°F
SW 14 mph
Precip.
93%
93%
Night
61°F
SW 6 mph
Precip.
13%
13%
26.09
sat
sat
Day
70°F
W 4 mph
Precip.
1%
1%
Night
64°F
SW 5 mph
Precip.
4%
4%
27.09
sun
sun
Day
73°F
E 4 mph
Precip.
1%
1%
Night
66°F
SW 7 mph
Precip.
3%
3%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 78.9°F. The highest and lowest sea temperatures during the month were 81.1°F and 76.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 67.4°F. The highest and lowest sea temperatures during the month were 73.2°F and 64.8°F.
Air temperature in Split, °F
Precipitation total in Split, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Split
Split on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Split
Local time: 04:01
September 21, monday
0600
68°F
SW
5 mph
5 mph
0900
73°F
SW
2 mph
2 mph
1200
79°F
NE
6 mph
6 mph
1500
75°F
NE
7 mph
7 mph
1800
73°F
NE
2 mph
2 mph
2100
70°F
SW
9 mph
9 mph
September 22, tuesday
0000
64°F
SW
11 mph
11 mph
0300
63°F
SW
12 mph
12 mph
