Greek Islands

Which Greek island is warmest?

In January, the coolest month, Kastellorizo and Symi are about equally warm with 15 °C by day. In August, Salamis Island is warmest with 33 °C. The sea is warmest at Kastellorizo: 28 °C in August.

Daytime temperature by island and month

Average daily highs from 30 years of weather data. The warmest island of each month is highlighted.

IslandJanFebMarAprMayJunJulAugSepOctNovDec
Kastellorizo15°15°17°20°24°29°32°32°29°25°20°16°
Symi15°15°16°19°23°26°29°30°27°24°20°16°
Crete15°15°17°20°24°28°30°30°28°24°20°16°
Rhodes Town14°14°16°18°22°25°28°29°27°23°20°16°
Lindos, Rhodes14°14°16°19°23°27°29°30°27°23°20°16°
Kos Town14°14°15°18°21°25°27°27°25°22°19°16°
Naxos14°14°15°17°20°24°26°26°24°21°18°15°
Parikia, Paros14°14°15°17°20°24°26°26°24°21°18°15°
Argostoli, Kefalonia14°14°15°17°21°25°27°28°25°22°19°15°
Astypalaia14°14°15°17°20°23°25°26°24°21°19°16°
Santorini14°14°15°17°20°24°26°26°24°21°18°15°
Corfu Town13°13°15°17°21°25°27°28°25°21°18°14°
Zakynthos Town (Zante)13°14°16°19°23°27°30°30°27°23°19°15°
Mykonos13°14°15°17°20°24°26°26°24°21°18°15°
Lefkada13°13°15°18°22°26°29°29°26°22°18°14°
Ýdra13°14°16°19°23°28°31°31°27°23°19°15°
Patmos13°13°14°16°19°22°24°25°23°20°17°15°
Milos13°13°14°17°20°24°26°27°24°21°18°15°
Syros13°13°14°16°20°24°26°26°24°20°17°14°
Ios13°13°14°17°20°24°26°26°24°21°18°15°
Tinos13°14°15°17°20°24°26°26°24°21°18°15°
Andros13°13°14°16°20°24°26°26°24°21°18°14°
Kimolos13°13°15°17°20°24°27°27°25°21°18°15°
Spetses13°14°16°20°24°29°32°32°28°23°19°15°
Skiathos12°12°14°17°21°25°28°28°25°21°17°13°
Salamis Island12°13°16°20°26°31°34°33°29°23°18°14°
Amorgos12°12°13°16°19°23°25°25°23°20°17°14°
Scyros12°12°14°16°20°24°27°27°24°20°17°13°
Skopelos11°12°13°16°20°24°27°27°24°20°16°13°
Mytilene11°12°14°17°22°27°30°30°26°21°17°13°

Sea temperature by island and month

Average sea surface temperature. The warmest sea of each month is highlighted.

IslandJanFebMarAprMayJunJulAugSepOctNovDec
Kastellorizo18°17°17°18°20°24°27°28°27°25°22°20°
Symi18°17°17°18°20°22°25°26°26°24°22°20°
Crete16°16°16°17°19°23°25°26°25°23°21°18°
Rhodes Town18°17°17°18°20°23°25°27°26°24°22°20°
Lindos, Rhodes18°17°17°18°20°23°26°27°26°24°22°19°
Kos Town18°17°17°18°20°22°24°25°25°23°21°19°
Naxos17°16°16°17°19°22°23°24°23°21°19°17°
Parikia, Paros16°16°16°17°19°22°24°24°24°22°19°17°
Argostoli, Kefalonia16°16°16°16°19°23°25°26°25°23°21°18°
Astypalaia18°17°17°17°19°22°23°25°24°22°20°19°
Santorini17°16°16°17°19°22°24°25°24°22°20°18°
Corfu Town16°15°15°16°19°23°24°26°25°22°20°17°
Zakynthos Town (Zante)16°16°16°16°19°23°25°26°25°23°21°18°
Mykonos16°16°16°17°18°21°23°24°23°21°19°17°
Lefkada16°15°15°16°19°23°25°26°25°23°20°18°
Ýdra16°15°15°16°19°23°25°26°25°23°21°18°
Patmos17°17°17°17°19°22°23°24°23°22°20°19°
Milos16°16°16°17°19°22°25°25°24°22°20°18°
Syros16°16°16°17°19°22°24°25°24°22°19°17°
Ios17°16°16°17°19°22°24°24°24°22°20°18°
Tinos16°16°16°16°18°22°24°24°24°21°19°17°
Andros15°15°15°16°18°22°24°25°24°21°19°17°
Kimolos16°16°16°17°19°22°24°25°24°22°20°18°
Spetses16°15°15°16°19°23°26°26°25°23°21°18°
Skiathos14°14°14°15°19°23°26°26°25°22°19°16°
Salamis Island16°15°15°16°19°23°26°26°25°23°20°18°
Amorgos17°17°17°17°19°22°23°24°24°22°20°18°
Scyros15°15°15°16°18°22°24°25°23°21°18°16°
Skopelos15°14°14°15°19°23°26°26°25°21°18°16°
Mytilene16°15°15°16°19°22°24°24°23°21°18°17°

The warmest Greek island, month by month

MonthWarmest by dayWarmest sea
JanuaryKastellorizo · 15°Rhodes Town · 18°
FebruaryKastellorizo · 15°Rhodes Town · 17°
MarchKastellorizo · 17°Rhodes Town · 17°
AprilKastellorizo · 20°Rhodes Town · 18°
MaySalamis Island · 26°Rhodes Town · 20°
JuneSalamis Island · 31°Kastellorizo · 24°
JulySalamis Island · 34°Kastellorizo · 27°
AugustSalamis Island · 33°Kastellorizo · 28°
SeptemberKastellorizo · 29°Kastellorizo · 27°
OctoberKastellorizo · 25°Kastellorizo · 25°
NovemberRhodes Town · 20°Rhodes Town · 22°
DecemberCrete · 16°Rhodes Town · 20°

Warmest Greek island: quick answers

Which Greek island is warmest?

In the coolest month (January) Kastellorizo is warmest with 15 °C by day; in the warmest month (August) it is Salamis Island with 33 °C.

Which Greek island is warmest in January?

In January the warmest are Kastellorizo (15 °C), Symi (15 °C) and Crete (15 °C).

Which Greek island is warmest in winter?

From December to February, Crete is warmest with 15 °C by day on average, followed by Kastellorizo (15 °C) and Symi (15 °C).

Which Greek island has the warmest sea?

Kastellorizo: the sea reaches 28 °C in August. In January it is still 18 °C.

Which Greek island is sunniest?

Rhodes Town, with 8.2 hours of sunshine a day over the year, followed by Lindos, Rhodes (8.2 h) and Naxos (8.2 h).

Which Greek island is driest?

Naxos, with about 52 rainy days a year, followed by Santorini (53) and Parikia, Paros (53).

Islands compared

Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences