Santorini · September
Best travel monthTravel seasonGreece · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, ↑ warmestØ day↑ warmest | 15° (59°)19° (66°) | 16° (61°)19° (66°) | 17° (63°)21° (70°) | 20° (68°)24° (75°) | 24° (75°)30° (86°) | 28° (82°)33° (91°) | 31° (88°)35° (95°) | 31° (88°)34° (93°) | 28° (82°)31° (88°) | 24° (75°)28° (82°) | 20° (68°)23° (73°) | 17° (63°)20° (68°) |
Ø night, ↓ coldestØ night↓ coldest | 11° (52°)4° (39°) | 11° (52°)6° (43°) | 12° (54°)7° (45°) | 14° (57°)10° (50°) | 17° (63°)13° (55°) | 22° (72°)17° (63°) | 24° (75°)21° (70°) | 25° (77°)22° (72°) | 22° (72°)18° (64°) | 18° (64°)14° (57°) | 15° (59°)10° (50°) | 12° (54°)6° (43°) |
☀️Sunshine | 5h | 6h | 8h | 9h | 10h | 12h | 12h | 11h | 10h | 8h | 6h | 5h |
🌊Water Temp | 17° (63°) | 17° (63°) | 17° (63°) | 18° (64°) | 20° (68°) | 23° (73°) | 25° (77°) | 26° (79°) | 25° (77°) | 23° (73°) | 21° (70°) | 19° (66°) |
🌧Rain Days | 5d45mm (1.8") | 4d33mm (1.3") | 2d17mm (0.7") | 1d7mm (0.3") | 0d3mm (0.1") | 0d1mm (<0.1") | 0d0mm (<0.1") | 0d0mm (0") | 0d2mm (0.1") | 1d8mm (0.3") | 2d20mm (0.8") | 4d39mm (1.5") |
Best travel time current monthØ = average · ↑ warmest day · ↓ coldest nightClimate data 2005–2025 · Source: ERA5 + station data
Travel season — mid-range prices, good availability.
September is among the best months in Santorini: only 0 rain days, 28°C (82°F) highs, and good sunshine make for ideal holiday conditions.
Daytime highs average 28°C (82°F), cooling to 22°C (72°F) at night (daily average: 25°C (77°F)). Peaks reach around 31°C (88°F), the coldest nights around 18°C (64°F). With 10 sunshine hours per day, September is one of the sunniest months — 2 mm (0.1 in) of rain over 0 days. Sea temperature is 25°C (77°F) — pleasantly warm for long swim sessions.
Pack light summer clothing, sunscreen, and swimwear — beach and water conditions in September are ideal.
The golden off-season: the sea is at its warmest of the year, the cruise season winds down and the atmosphere in the caldera bars becomes more intimate. For many Santorini connoisseurs, October is simply the best month.
Packing list for Santorini in September
- T-shirts and shorts
- Swimwear and beach towel
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Travel first-aid kit
Frequently Asked Questions
- Is September a good time to visit Santorini?
- Yes — September is one of the best months to visit Santorini (Climate Score: 90/100). Pleasant temperatures (28°C (82°F)), good sunshine (10 h/day), and few rain days (0) make it one of the most recommended months.
- How warm is it in Santorini in September?
- In September, Santorini sees daily highs of 28°C (82°F). Nights cool to 22°C (72°F), with a daily average of 25°C (77°F). Peaks reach around 31°C (88°F), the coldest nights around 18°C (64°F).
- How much rain falls in Santorini in September?
- In September, Santorini receives an average of 2 mm (0.1 in) of rain over 0 rain days. That is comparatively dry.
- How many sunshine hours does Santorini get in September?
- Santorini averages 10 sunshine hours per day in September — above the annual average.
- How warm is the water in Santorini in September?
- Water temperature in Santorini in September averages 25°C (77°F) — pleasantly warm for swim sessions.
