Current Sea Water Temperature:
+64.6°F
| Maximum Sea Water Temperature in April: | 68.6°F |
| Minimum Sea Water Temperature in April: | 57.2°F |
| Average water temperature in April: | 61.6°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| April 19 | 64.6°F | April 14 | 62.2°F |
| April 18 | 63.6°F | April 13 | 64.6°F |
| April 17 | 63.6°F | April 12 | 64.0°F |
| April 16 | 63.2°F | April 11 | 63.4°F |
| April 15 | 62.2°F | April 10 | 62.4°F |
When is the Warmest Sea for Ischia?
According to our data for the last three years for Ischia the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Ischia was 83.5°F. The maximum and minimum values were 81.2°F and 85.0°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Ischia was 84.0°F. The maximum and minimum values were 81.8°F and 86.6°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Ischia was 81.7°F. The maximum and minimum values were 78.8°F and 83.4°F respectively.
Italy Resorts:
NAME
F°
| Amalfi |  |
+64 |
| Bari | |
+64 |
| Bibione |  |
+60 |
| Cagliari |  |
+64 |
| Catania | |
+66 |
| Florence |  |
+60 |
| Genoa | |
+62 |
| Lido di Jesolo | |
+58 |
| Naples | |
+64 |
| Palermo | |
+66 |
| Rimini | |
+60 |
| Rome | |
+66 |
| Sicily | |
+62 |
| Tropea | |
+62 |
| Venice | |
+58 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Ischia
Local time: 09:22
20 apr, monday
| 1200 |  |
64°F | NW 9 mph |
| 1500 |  |
64°F | N 8 mph |
| 1800 | |
66°F | N 8 mph |
| 2100 |  |
64°F | N 8 mph |
21 apr, tuesday
| 0000 | |
64°F | N 7 mph |
| 0300 | |
64°F | N 6 mph |
| 0600 |  |
62°F | N 6 mph |
| 0900 | |
64°F | NW 6 mph |