In October the sea is warmest around Cyprus (26 °C), El Hierro (25 °C) and La Gomera (24 °C). Average daytime highs across the 30 islands below range from 21 °C to 28 °C; the warmest days are on Cyprus (28 °C). 21 of them have real beach weather (sea and air both at 22 °C or more): Cyprus, El Hierro, La Gomera, La Palma, Tenerife, Gozo, Malta, Comino and others. Hiking conditions (15–25 °C by day, little rain) are best on El Hierro, Gozo, Malta, Comino, Crete, Menorca and others. Driest: Lanzarote with about 2 rain days.
| Island | Sea | Day | Night | Rain days | Good for |
|---|---|---|---|---|---|
| Cyprus | 26° | 28° | 19° | 3 | Swim |
| El Hierro | 25° | 23° | 17° | 6 | SwimHike |
| La Gomera | 24° | 27° | 21° | 3 | Swim |
| La Palma | 24° | 27° | 20° | 8 | Swim |
| Tenerife | 24° | 26° | 20° | 2 | Swim |
| Gozo | 24° | 25° | 20° | 7 | SwimHike |
| Malta | 24° | 24° | 20° | 7 | SwimHike |
| Comino | 24° | 24° | 20° | 7 | SwimHike |
| Crete | 24° | 25° | 17° | 5 | SwimHike |
| Mallorca | 24° | 24° | 17° | 9 | Swim |
| Gran Canaria | 24° | 27° | 21° | 3 | Swim |
| Menorca | 24° | 23° | 18° | 7 | SwimHike |
| Ithaca | 23° | 22° | 16° | 8 | – |
| Formentera | 23° | 24° | 19° | 7 | SwimHike |
| Corfu | 23° | 22° | 17° | 10 | Swim |
| Ibiza | 23° | 24° | 19° | 6 | SwimHike |
| Santorini | 23° | 22° | 18° | 3 | SwimHike |
| Lanzarote | 23° | 27° | 20° | 2 | Swim |
| Fuerteventura | 23° | 26° | 20° | 3 | Swim |
| Ischia | 23° | 22° | 18° | 10 | Swim |
| Capri | 23° | 22° | 16° | 11 | Swim |
| La Graciosa | 23° | 25° | 19° | 3 | SwimHike |
| Lavezzi Islands (also Cavallo, Île de Piana) | 22° | 22° | 17° | 9 | – |
| Île Sainte-Marguerite (also Île Saint-Honorat) | 21° | 21° | 14° | 8 | – |
| Port-Cros | 21° | 21° | 15° | 8 | – |
| Île du Levant | 21° | 21° | 15° | 8 | – |
| Porquerolles | 21° | 22° | 14° | 8 | – |
| Île du Gaou | 20° | 21° | 15° | 9 | – |
| Pomègues (also Frioul Islands, Ratonneau) | 20° | 21° | 14° | 8 | – |
| Île des Embiez | 20° | 21° | 15° | 9 | – |
Sources: ERA5 reanalysis via Open-Meteo (air temperature, rain; 10-year average) and Open-Meteo Marine API (sea surface temperature; 3-year average). Data by Open-Meteo.com (CC BY 4.0). Area averages — individual years vary.
Other months
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All islands, all months: sea temperature at a glance