Santorini, a picturesque Greek island in the Aegean Sea, experiences a Mediterranean climate with distinct wet and dry seasons. The island receives an average annual rainfall of 555 millimeters (21.9 inches), primarily concentrated in the autumn and winter months. While Santorini is known for its sunny weather, understanding its rainfall patterns is crucial for planning your visit. This guide explores the precipitation trends, rainy seasons, and best times to visit to minimize rain exposure in Santorini.
What Are the Average Annual Rainfall and Monthly Breakdown in Santorini?

Santorini’s annual rainfall of 555 millimeters (21.9 inches) is distributed unevenly throughout the year. Here’s a detailed monthly breakdown of the average precipitation:
Month | Rainfall (mm) | Rainy Days |
---|---|---|
January | 115 | 9 |
February | 80 | 7 |
March | 65 | 6 |
April | 30 | 3 |
May | 15 | 2 |
June | 5 | 1 |
July | 1 | 0 |
August | 1 | 0 |
September | 15 | 1 |
October | 60 | 3 |
November | 70 | 5 |
December | 100 | 9 |
This rainfall pattern significantly impacts the island’s climate, with most of the rain concentrated in the autumn and winter months (October to March). The landscape becomes arid during the dry season from April to September.
When Is the Rainy Season in Santorini?

The rainy season in Santorini primarily occurs from October to March. During these months, the island experiences higher levels of precipitation compared to the rest of the year. Here’s a closer look at the rainy season:
- October: Marks the beginning of the rainy season with 60 mm (2.4 in) of rainfall over 3 rainy days.
- November: Precipitation increases to 70 mm (2.8 in) with 5 rainy days.
- December: Rainfall continues to rise, reaching 100 mm (3.9 in) over 9 rainy days.
- January: The wettest month of the year, with 115 mm (4.5 in) of rain and 9 rainy days.
- February: Precipitation begins to decrease, with 80 mm (3.1 in) over 7 rainy days.
- March: The rainy season starts to wind down, with 65 mm (2.6 in) of rainfall over 6 rainy days.
What Is the Detailed Weather Forecast for November in Santorini?
For those planning a visit to Santorini in November, here’s what you can expect:
- Average Temperature: The mean temperature hovers around 16.8°C (62°F), with daytime highs reaching 19.1°C (66.3°F) and nighttime lows dropping to 14.5°C (58.1°F).
- Precipitation: November sees an average of 70 mm (2.8 in) of rainfall, typically spread over 5 days.
- Sunshine Hours: You can expect approximately 5.5 hours of sunshine per day.
- Humidity: The average humidity is around 71%.
November in Santorini is generally mild but can be cloudy and cool, marking the transition into the winter season. If you’re planning a trip during this time, it’s advisable to pack for cooler temperatures and potentially rainy conditions, although the rain is usually not heavy.
When Is the Best Time to Visit Santorini to Minimize Rain Exposure?
To minimize your chances of encountering rain during your visit to Santorini, the best time to plan your trip is from April to September. Here’s a breakdown of these optimal months:
- April to May:
- Warm and sunny weather
- Low chances of rain
- Ideal for hiking and sightseeing
-
Spring flowers in bloom
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June to August:
- Hottest and driest months
- Almost no rainfall
- High season for tourism
-
Perfect for beach activities and outdoor dining
-
September:
- Warm and sunny weather continues
- Minimal rainfall
- Less crowded than peak summer months
- Pleasant temperatures for exploring
Statistically, July and August are the driest months, each receiving only 1 mm (0 in) of rain. These summer months offer the best weather conditions for enjoying Santorini’s famous beaches, outdoor restaurants, and breathtaking sunsets without the worry of rain interrupting your plans.
How Does Rainfall Affect Santorini’s Landscape and Agriculture?
The distinct wet and dry seasons in Santorini have a significant impact on the island’s landscape and agricultural practices:
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Landscape: The rainy season from October to March helps replenish groundwater and supports the growth of native vegetation. However, the long dry season results in a characteristically arid landscape during summer months.
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Agriculture: Santorini’s farmers have adapted to the rainfall patterns by:
- Cultivating drought-resistant crops like cherry tomatoes and fava beans
- Using traditional dry-farming techniques
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Harvesting rainwater during the wet season for use in the dry months
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Vineyards: The island’s famous wine industry benefits from the dry climate, which helps prevent fungal diseases in grapevines and contributes to the unique flavor profile of Santorini wines.
What Should Visitors Pack for Rainy Weather in Santorini?
If you’re visiting Santorini during the rainy season (October to March), it’s wise to be prepared. Here’s a list of items to consider packing:
- Lightweight, waterproof jacket
- Umbrella
- Water-resistant shoes or boots
- Quick-drying clothes
- Layers for temperature fluctuations
- Waterproof phone case or bag
- Indoor activity plans as backup
Remember, even during the rainy season, Santorini experiences many clear days. These items will ensure you’re prepared for occasional showers without overpacking.
In conclusion, while Santorini does experience rainfall, particularly from October to March, it remains a beautiful destination year-round. By understanding the island’s rainfall patterns and planning accordingly, you can enjoy all that Santorini has to offer, from its stunning caldera views to its rich cultural heritage, regardless of the season.
Reference:
1. https://www.climatestotravel.com/climate/greece/santorini
2. https://www.timeanddate.com/weather/greece/santorini/climate
3. https://www.weather-atlas.com/en/greece/santorini-climate