Average highs in Santorini run from 13 °C (56 °F) in January to 28 °C (82 °F) in July. By the numbers, the best months to go are May, September, October.
average high to low each dot ≈ 3 rainy days
Pick a month
Santorini climate table
| Month | High | Low | Rainy days | Rain | Sea | Daylight |
|---|---|---|---|---|---|---|
| January | 13°C / 56°F | 10°C / 49°F | 8 | 57 mm | 18°C | 9 h 56 min |
| February | 14°C / 57°F | 10°C / 51°F | 5 | 52 mm | 17°C | 10 h 48 min |
| March | 15°C / 59°F | 11°C / 52°F | 5 | 48 mm | 17°C | 11 h 52 min |
| April | 18°C / 65°F | 13°C / 56°F | 1 | 13 mm | 18°C | 13 h 05 min |
| May | 22°C / 71°F | 17°C / 62°F | 2 | 11 mm | 19°C | 14 h 05 min |
| June | 26°C / 78°F | 20°C / 69°F | 1 | 6 mm | 23°C | 14 h 38 min |
| July | 28°C / 82°F | 23°C / 73°F | 0 | 1 mm | 25°C | 14 h 25 min |
| August | 28°C / 82°F | 23°C / 74°F | 0 | 2 mm | 26°C | 13 h 32 min |
| September | 26°C / 78°F | 21°C / 71°F | 0 | 6 mm | 25°C | 12 h 21 min |
| October | 22°C / 71°F | 18°C / 64°F | 2 | 13 mm | 24°C | 11 h 11 min |
| November | 19°C / 65°F | 15°C / 59°F | 3 | 24 mm | 21°C | 10 h 10 min |
| December | 15°C / 59°F | 12°C / 53°F | 6 | 47 mm | 19°C | 9 h 41 min |
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Good to know
- Typical daily budget: €60–170 (budget) to €250–680 (mid-range) per person, excluding flights.
- Usually high season: June, July, August, September.
- Where to stay: Fira for transport and value; Oia or Imerovigli for caldera views; Kamari or Perissa for beaches.
Plan your Santorini trip
- Is Santorini Expensive? Real Costs and a 2026 Budget Guide
- How to Choose an AI Trip Planner in 2026 — 7 Things That Actually Matter
- Best Time to Visit Greece: Month-by-Month Guide 2026
Nearby cities
Athens weather · Istanbul weather · Cairo weather · Dubrovnik weather
FAQ
What is the best month to visit Santorini?
By weather alone, May, September, October score best: comfortable temperatures and few rainy days. Peak season is usually June, July, August, September, when rooms cost more.
What is the warmest month in Santorini?
July, with average highs of 28 °C (82 °F).
What is the rainiest month in Santorini?
January, with about 8 rainy days.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights.