Planning a Trip to Santorini? Here's the Weather
See what weather to expect in Santorini, Greece and plan your trip with confidence. Monthly averages from real historical weather data.
Santorini's caldera perch means the weather shapes the experience as much as the scenery — mild winters hover around 15°C but bring the island's most meaningful rainfall, while the long dry stretch from late spring into autumn is what draws most visitors. Summers peak at 30°C in July, hot enough that a shaded café terrace or a dip at a black-sand beach becomes the natural rhythm of the afternoon. It's a compact island where the climate genuinely dictates the pace.
Written by Leo Vicente, founder & engineer who loves to travel
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22°C
Avg. high
18°C
Avg. low
267mm
Yearly rainfall
5
Best months
Travel Window Score · 9.4/10
Santorini's best travel month is October — around 2 rain days and daytime highs near 23°C, on a 10-year historical average (climatology tier).
Climatology · 10-YR AVG · How we forecast →
Try It with Real Forecasts
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Start PlanningMonthly Temperature & Rainfall
15°
11°
48mm
Jan
15°
12°
47mm
Feb
17°
13°
43mm
Mar
20°
15°
13mm
Apr
23°
18°
11mm
May
27°
22°
5mm
Jun
30°
24°
1mm
Jul
29°
25°
2mm
Aug
27°
23°
5mm
Sep
23°
19°
13mm
Oct
20°
16°
25mm
Nov
16°
13°
54mm
Dec
What Weather to Expect in Santorini
Santorini typically has the most favorable weather for travel during April, May, June, September, October, with comfortable temperatures and relatively low rainfall — ideal conditions for sightseeing and outdoor activities.
Best Time to Visit Santorini
April, May, June, September, October offer warm, walkable days with highs between 20°C and 27°C and reliably low rainfall, making it the right window for clifftop strolls, outdoor dining, and beach visits without the intensity of peak summer heat.
The best time to visit Santorini is April, May, June, September, October, when daytime highs average around 24°C and rainfall stays low at roughly 9mm per month. These months offer the most comfortable conditions for sightseeing, outdoor activities, and exploring the city at a relaxed pace. June is typically the driest of these months, with only around 5mm of precipitation.
July brings the year's highest temperatures alongside peak tourist crowds, which can make the island's narrow paths and popular viewpoints feel overwhelming.
Santorini Weather by Season
Spring
Spring (March–May) brings mild weather to Santorini, with highs averaging 20°C and lows around 15°C. The season is relatively dry, accumulating around 67mm total with roughly 5 rainy days per month.
Summer
Summer (June–August) brings warm weather to Santorini, with highs averaging 29°C and lows around 24°C. The season is very dry with minimal rainfall, accumulating around 8mm total with roughly 1 rainy day per month.
Autumn
Autumn (September–November) brings mild weather to Santorini, with highs averaging 23°C and lows around 19°C. The season is very dry with minimal rainfall, accumulating around 43mm total with roughly 3 rainy days per month.
Winter
Winter (December–February) brings cool weather to Santorini, with highs averaging 15°C and lows around 12°C. The season is relatively dry, accumulating around 149mm total with roughly 9 rainy days per month.
Things to do in Santorini
Handpicked activities you can book now, matched to typical weather in Santorini.
Itineraries Featuring Santorini
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Experience the sun-soaked beauty of Athens and Santorini on a 10-day relaxation trip, balancing cultural exploration with tranquil island life.
SummerSerenity Awaits: Barcelona to Santorini
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Discover relaxation across Barcelona and Santorini in this 14-day journey. Enjoy the sun and culture while planning around your preferences.
Climate data is a 10-year historical average (2016–2025), averaged across a wide area rather than a single weather station. Temperatures in Celsius. How we forecast →