Best time to cruise · Best time to go

Greek Isles cruises in September

Warm water, golden light and thinning crowds once Greek schools reopen in the second week. Highs drop into the low 80s °F (27–28°C), the meltemi eases, and the evenings are perfect for an outdoor dinner in Rhodes or Chania. Demand is high and cabins on the best itineraries go early.

Best time to go
Avg high 83°F
12 hrs daylight

Photo: dronepicr, CC BY 2.0, via Wikimedia Commons

Greek Isles in September: Best time to go

Across Greek Isles cruise ports, September brings average highs around 83°F (28°C) and lows near 73°F, with about 1.4 inches of rain over the month and roughly 12 hours of daylight.

Verdict: Best time to go
Season: April to early November; best late May–June and September
Average high / low: 83°F / 73°F
Rainfall (month): 1.4 in
Daylight: About 12 hours
Typical cruise length: 3 to 7 nights from Piraeus; 7 to 12 nights on wider Eastern Med routes

What to pack: light, breathable clothes, swimwear, a sun hat, sunglasses and reef-safe sunscreen, plus a light layer for air-conditioned rooms.

How September compares with the rest of the year

No regular sailings
Shoulder season
Good time to go
Best time to go

Greek Isles in August Greek Isles in October

Greek Isles weather in September

Average monthly weather in Greek Isles cruise ports
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
High °F (°C)	5814	5915	6216	6720	7423	8228	8731	8831	8328	7624	6820	6216
Low °F (°C)	5111	5211	5312	5814	6418	7222	7625	7725	7323	6719	6116	5513
Rain in (mm)	4.4112	2.564	2.564	1.026	0.923	0.821	0.39	0.411	1.436	1.948	3.486	3.897
Daylight (hrs)	10	11	12	13	14	15	15	14	12	11	10	10

Average daily highs and lows and monthly rainfall for 2015–2024 from NASA POWER for the area around Greek Isles cruise ports, adjusted to sea level; daylight is calculated for mid-month. Real weather on any given day varies.

September weather port by port

Port	Avg high	Avg low	Rain	Daylight
Athens	86°F	71°F	1.4 in	12 h
Santorini	78°F	74°F	0.8 in	12 h
Mykonos	76°F	73°F	0.9 in	12 h
Rhodes	83°F	77°F	0.7 in	12 h
Heraklion, Crete	81°F	75°F	0.9 in	12 h
Chania (Souda Bay), Crete	83°F	74°F	0.9 in	12 h
Corfu	82°F	73°F	2.8 in	12 h
Kuşadası (for Ephesus)	95°F	68°F	0.6 in	12 h
Patmos	78°F	73°F	0.7 in	12 h
Nafplio	90°F	69°F	1.9 in	12 h
Katakolon (for Olympia)	80°F	76°F	2.6 in	12 h
Argostoli, Kefalonia	81°F	75°F	2.8 in	12 h

Average daily highs and lows, 2015–2024, from NASA POWER, adjusted to sea level. Rain is the average monthly total.

Other great cruise destinations in September

See every destination for September, with a port weather map →

Greek Isles in September: FAQs

Is September a good time to cruise Greek Isles?

Yes, it's one of the best months. Warm water, golden light and thinning crowds once Greek schools reopen in the second week. Highs drop into the low 80s °F (27–28°C), the meltemi eases, and the evenings are perfect for an outdoor dinner in Rhodes or Chania. Demand is high and cabins on the best itineraries go early.

What is the weather like on a Greek Isles cruise in September?

Across Greek Isles cruise ports, September brings average highs around 83°F (28°C) and lows near 73°F, with about 1.4 inches of rain over the month and roughly 12 hours of daylight. Conditions vary from port to port and day to day.

What should I pack for a Greek Isles cruise in September?

Pack light, breathable clothes, swimwear, a sun hat, sunglasses and reef-safe sunscreen, plus a light layer for air-conditioned rooms. Check your cruise line's dress code for evenings.

When is the best time to cruise Greek Isles?

April to early November; best late May–June and September. The best months are usually May, June, September.

Where else can I cruise in September?

September is also a top month for Hawaii, Canada & New England, Pacific Coastal, Mediterranean, Western Mediterranean.

Updated November 2026 by the BookMyDreamCruise editorial team. How we research and fact-check.

Sources: NASA POWER climate data.