2026 Climate Averages

Santorini: Weather Guide & Climate

Complete month-by-month weather guide: Santorini. Best time to visit: May, June, September, October. Plan your trip with detailed climate data.

☀️ Climate Overview

Santorini has a Warm climate with average yearly highs of 19°C, lows of 18°C, and approximately 4 rainy days per month.

The best time to visit Santorini is during May, June, September, October, when temperatures are comfortable and rainfall is moderate

Drier season: Apr–Oct Wetter season: Jan–Dec

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Best Time

J F M A M J J A S O N D
Conditions Excellent

Hottest

25°C July
Avg Low 24°C
Rain 0 days

Coldest

12°C February
Avg High 14°C
Rain 7 days

Driest Month

0 rainy days June
Avg High 23°C
Avg Low 21°C

Windiest Month

37 km/h

January (gusts 51)

Sea Temp Range

17° – 26°C

Warmest water: August (26°C)

Best for swimming: Jun, Jul, Aug, Sep, Oct, Nov (21°–26°C)

Forecast for your trip dates

Up to 14 days ahead

Weather by Season

Spring

Mar–May

High 17°C
Low 15°C
Rain 4 days
Crowds
Moderate
Travel Costs Shoulder Rates

Summer

Jun–Aug

High 24°C
Low 23°C
Rain 0 days
Crowds
Busy
Travel Costs Peak Rates

Autumn

Sep–Nov

High 21°C
Low 20°C
Rain 2 days
Crowds
Busy
Travel Costs Shoulder Rates

Winter

Dec–Feb

High 15°C
Low 13°C
Rain 9 days
Crowds
Quiet
Travel Costs Value Rates

Month-by-Month Weather Table

January

Good
15° / 13°
11d (58mm)
8.1h
70% Humid
UV 3.7 Moderate

February

Good
14° / 12°
7d (36mm)
8.9h
70% Humid
UV 5.1 High

March

Good
15° / 13°
7d (36mm)
10.3h
71% Humid
UV 7.2 Very High

April

Good
16° / 15°
2d (8mm)
11.5h
76% Humid
UV 9 Very High

May

Best
Excellent
19° / 18°
2d (6mm)
12.4h
80% Very Humid
UV 10.4 Extreme

June

Best
Excellent
23° / 21°
0d (2mm)
13.3h
80% Very Humid
UV 11.4 Extreme

July

Good
25° / 24°
0d (0mm)
13.1h
78% Humid
UV 11.4 Extreme

August

Good
25° / 24°
0d (2mm)
12.6h
80% Very Humid
UV 10.2 Extreme

September

Best
Excellent
24° / 23°
0d (1mm)
11.3h
76% Humid
UV 8.3 Very High

October

Best
Excellent
21° / 20°
2d (7mm)
9.9h
74% Humid
UV 6 High

November

Good
19° / 17°
4d (24mm)
8.7h
73% Humid
UV 4.2 Moderate

December

Good
16° / 15°
10d (61mm)
8h
72% Humid
UV 3.3 Moderate

⚖️Find Your Ideal Month

Adjust the sliders to weight what matters most to you.

5
3
3
Your Best MonthMarScore: 7.5
1.Mar
7.52.Dec
7.53.Jul
7.44.Aug
7.45.Nov
7.46.Jan
77.Apr
78.Feb
6.59.May
5.610.Jun
5.611.Sep
5.612.Oct
5.6

Where to Stay

See hotels, apartments & rentals around Santorini – live prices from Booking.com, Expedia, Vrbo and more

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Santorini

Iconic caldera sunsets with Oia sunset viewpoint and Catamaran cruise around the caldera, white-washed villages, volcanic beaches, and cliffside luxury.

View Full Destination Guide

Ready to Plan Your Santorini Trip?

Get strategic travel tips, seasonal insights, and expert recommendations.

Frequently Asked Questions

What type of climate does Santorini have?
Santorini has a warm climate with average yearly temperatures of 19°C and 18°C.
When is the best time to visit Santorini?
The best time to visit Santorini is during May, June, September, October, when temperatures average around 19°C and conditions are ideal for sightseeing.
What are the hottest and coldest months in Santorini?
The hottest month in Santorini is July with average highs of 25°C, while the coldest is February with average lows of 12°C.
When is the rainy season in Santorini?
Santorini sees the most rain in January (11 rainy days), while June is the driest month (0 rainy days).
Does it get cold at night in Santorini?
Night temperatures vary throughout the year. The coldest nights are in February (12°C), while July has the warmest evenings (24°C). Pack layers for cooler months.
Can you swim year-round in Santorini?
Sea temperatures in Santorini range from 17°C to 26°C throughout the year. The warmest water is in August. Winter months may be too cold for comfortable swimming.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Last Updated: February 2026

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