Average sea water temperature in September:
+78.3°F
| Minimum sea water temperature in September: | 85.1°F |
| Maximum sea water temperature in September: | 73.0°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 81.1°F. The highest and lowest sea temperatures during the month were 85.1°F and 75.2°F.
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Monthly sea water temperature in Posillipo, °F
Which Italy resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Cefalu | 82.7°F | 79.9°F |
| Sicily | 82.7°F | 79.6°F |
| Mondello | 82.4°F | 80.1°F |
| Avola | 82.1°F | 79.7°F |
| Letojanni | 82.1°F | 78.9°F |
| Taormina | 82.1°F | 79.1°F |
| Giardini Naxos | 82.0°F | 79.1°F |
| Catania | 82.0°F | 79.5°F |
| Fontane Bianche | 81.9°F | 79.6°F |
| Catanzaro | 81.8°F | 78.9°F |
| Sirakuzy | 81.8°F | 79.7°F |
| San Vito Lo Capo | 81.7°F | 79.0°F |
| Santa Maria al Bagno | 81.7°F | 78.3°F |
| Gallipoli | 81.7°F | 78.3°F |
| Tropea | 81.6°F | 79.4°F |
| Santa Maria di Leuca | 81.5°F | 78.2°F |
| Pizzo | 81.4°F | 79.0°F |
| Palermo | 81.4°F | 79.5°F |
| Capo Vaticano | 81.3°F | 79.2°F |
| Ischia | 81.3°F | 78.5°F |
Best time for vacation in Posillipo
Posillipo on a weather map
Places in Italy:
Name
°F
24 Hours Forecast
Posillipo
Local time: 16:40
October 12, monday
1800
72°F
SE
5 mph
5 mph
2100
68°F
W
12 mph
12 mph
October 13, tuesday
0000
66°F
SW
11 mph
11 mph
0300
66°F
SW
18 mph
18 mph
0600
64°F
SW
17 mph
17 mph
0900
66°F
SW
14 mph
14 mph
1200
70°F
S
11 mph
11 mph
1500
72°F
S
6 mph
6 mph
