Month-by-month travel weather
Santorini September weather
Santorini, Greece · September
Warm sea days with much better walking comfort in the evening
September often feels like the start of the best balance: less oppressive heat than peak summer, but still great for sea activities.
Evenings become noticeably more comfortable for caldera walks, while wind remains a variable for boat plans.
September averages at a glance
Average low
around 20–22°C
Average high
around 25–28°C
Average precipitation
around 5–25 mm
Precip days
about 2–5 days
What to wear in September in Santorini
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Daytime: light summer clothing.
- • Evening: thin shirt/jacket layer can help as it cools.
- • Optional wind layer for boats.
- • Comfortable shoes for walking routes.
Travel tips for visiting Santorini in September
- • Sunset caldera walks are a comfort highlight.
- • Check wind/sea conditions for boat days.
- • Early September can still feel summer-hot—keep sun protection.
September weather in Santorini — FAQ
Q. Is September better than August?
A. Often yes—heat eases while sea days remain strong.
Q. Does it rain in September?
A. It can increase slightly; flexibility helps.
Explore Santorini
These pages are connected so you can compare conditions and decide for yourself.