MyCruiseForecast

South Aegean, Greece

Syros cruise weather by month

What to expect when your ship is in Syros in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

Weather in Syros by month

Average highs run from 55°F (13°C) in February to 84°F (29°C) in July. Rain falls on the fewest days in July and the most in January. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2022–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
MonthHigh / lowRain daysWindSea tempTypical seas
January56 / 50°F14 / 10°C36%20 mph32 km/h61°F16°C4 ft (1.2 m)Slight; rougher days up to 7 ft
February55 / 49°F13 / 9°C29%20 mph32 km/h61°F16°C4 ft (1.3 m)Moderate; rougher days up to 7 ft
March58 / 51°F15 / 11°C29%18 mph30 km/h61°F16°C3 ft (1.0 m)Slight; rougher days up to 7 ft
April64 / 55°F18 / 13°C15%17 mph28 km/h62°F17°C3 ft (0.9 m)Slight; rougher days up to 6 ft
May70 / 60°F21 / 16°C13%15 mph25 km/h–2 ft (0.7 m)Slight; rougher days up to 5 ft
June79 / 70°F26 / 21°C3%17 mph28 km/h–3 ft (0.8 m)Slight; rougher days up to 5 ft
July84 / 74°F29 / 24°C1%19 mph31 km/h–3 ft (1.0 m)Slight; rougher days up to 5 ft
August83 / 74°F28 / 24°C6%18 mph29 km/h–3 ft (1.0 m)Slight; rougher days up to 5 ft
September78 / 71°F26 / 22°C5%17 mph28 km/h–3 ft (0.9 m)Slight; rougher days up to 6 ft
October70 / 64°F21 / 18°C8%19 mph31 km/h73°F23°C4 ft (1.1 m)Slight; rougher days up to 6 ft
November64 / 58°F18 / 14°C21%20 mph32 km/h68°F20°C4 ft (1.3 m)Moderate; rougher days up to 7 ft
December59 / 54°F15 / 12°C31%19 mph31 km/h64°F18°C4 ft (1.1 m)Slight; rougher days up to 7 ft

Check the forecast for your sailing

Upcoming cruises in Syros

6 ships from 6 cruise lines are scheduled here, 8 visits in total. The next 8:

DateShipStopSailing
Sat, Oct 102026Azamara QuestAzamaraCalls11 nights from Piraeus (Athens)
Wed, Oct 142026MSC LiricaMSC CruisesCalls7 nights from Ancona
Tue, Oct 202026Explora IIExplora JourneysCalls10 nights from Piraeus (Athens)
Wed, Oct 212026MSC LiricaMSC CruisesCalls7 nights from Ancona
Fri, Oct 302026BalmoralFred Olsen Cruise LinesCalls52 nights from Valletta
Tue, Nov 32026Crown IrisMano MaritimeCalls7 nights from Haifa
Wed, Nov 42026Silver NovaSilversea CruisesCalls11 nights from Piraeus (Athens)
Tue, Nov 102026Explora IIExplora JourneysCalls20 nights from Piraeus (Athens)

Ships that visit Syros

Nearby cruise ports

Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.