Early autumn · Weather & things to do
Santorini in September
Santorini cools off: highs slip to 76°F (25°C), from 80°F in August, with lows of 72°F (22°C) and about 0.7 in (18 mm) of rain.
At 98/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 76°F (25°C)
- Avg low
- 72°F (22°C)
- Rain
- 0.7 in (18 mm)
- Humidity
- 73%
- Cloud cover
- 19%
- Daylight
- ~12 h 13 min
- Comfort score
- 98/100 · Great
What September feels like
Highs settle around 76°F (25°C), warm enough for short sleeves most of the day.
Even at night it stays warm, around 72°F (22°C).
Rain is scarce: about 0.7 in (18 mm) for the whole month.
Sunny spells dominate: cloud cover averages 19%.
It's breezy, with average winds near 11 mph (5.0 m/s) at ground level.
Plan around September
September is one of Santorini's best months on the climate data.
- Last dry month before the rain picks up: October brings 1.7 in (44 mm).
- Comfort holds steady from August (97 → 98/100).
- September sits inside the May – Oct window our Greek Island Hop route recommends.
What to pack for September
- Light, breathable clotheshighs average 76°F
- Sunscreen, sunglasses and a hatstrong sun this month
- Windproof shellaverage wind 11 mph
- Comfortable walking shoesmost picks involve some walking
What to do in Santorini in September
September is good outdoor weather here, so these picks lean toward the open air.
Perissa Beach
Long black-sand beach with sunbeds and tavernas.
Why now September scores 98/100 for comfort, good conditions for being outside.
Fira to Oia hike
10 km walk along the caldera rim through Firostefani and Imerovigli.
Why now Highs near 76°F and 0.7 in of monthly rain make this an easy outdoor pick.
Santo Wines
Cooperative winery with a terrace over the caldera, pouring Assyrtiko.
Why now One to do outside while the weather is on your side.
Ammoudi Fish Tavern
Waterside fish tavern at the foot of Oia's cliffs.
Domaine Sigalas
Family winery near Oia known for Assyrtiko and Vinsanto.
Nearby in September
- Naxos in September~49 mi · highs 77°F, 0.7 in rain · similar daytime temperatures, about as wet
- Mykonos in September~73 mi · highs 75°F, 0.8 in rain · similar daytime temperatures, about as wet
- Athens in September~146 mi · highs 83°F, 1.1 in rain · 4°C (7°F) warmer by day, about as wet
- Selçuk in September~150 mi · highs 92°F, 0.7 in rain · 9°C (15°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Santorini in September: quick answers
Is September a good time to visit Santorini?
Yes. On the climate data it's one of the best months, scoring 98/100. Expect highs of 76°F (25°C) and 0.7 in (18 mm) of rain. September is inside the May – Oct window our Greek Island Hop route recommends.
How hot is Santorini in September?
Average highs are 76°F (25°C) and average lows 72°F (22°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Santorini in September?
Not much: about 0.7 in (18 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 19.2 in (488 mm).
What should I pack for Santorini in September?
Bring light, breathable clothes (highs average 76°F), sunscreen, sunglasses and a hat (strong sun this month), windproof shell (average wind 11 mph) and comfortable walking shoes (most picks involve some walking).
More on Santorini
Routes in season in September
- Greek Island Hop May – Oct
Planning Santorini in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.