Santorini weather

Our guide to the weather in Santorini during January

15

Average high

4

UV Index

87mm

Monthly rainfall

17

Sea temperature

Santorini is a stunning Greek island with breathtaking views and a unique landscape - perfect for a memorable holiday. January temperatures tend to be mild and it's a great time of year to explore the archaeological sites and enjoy the local cuisine. We've looked at the most up-to-date weather data for Santorini, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Santorini weather in January.

What's the temperature like in Santorini during January?

January is typically the coolest month in Santorini. The temperature reaches around 15℃ during the daytime, falling away to 13℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Santorini during January?

January is typically the wettest month in Santorini. On average, there will be 4 rainy days during the month, amounting to 87.1mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Santorini during January?

Expect moderate breeze becoming stronger at times during January, with occasional gusts up to 24mph. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.

How warm is the sea in Santorini during January?

The water around Santorini is around 17℃ during January. It will feel a little on the cool when first entering, but you'll warm up quickly. Most kids will have no problem with this temperature, but those who feel the cold are unlikely to want to swim.

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25th July 2024 by Travel Vixta

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25th July 2024 by Phil and Garth

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10th April 2024 by Midlands Traveller

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Weather in Santorini

Our month-by-month guide to the weather and climate in Santorini

14.5

Santorini weather in

January
14.7

Santorini weather in

February
15.2

Santorini weather in

March
17.0

Santorini weather in

April
20.1

Santorini weather in

May
23.4

Santorini weather in

June
25.4

Santorini weather in

July
25.9

Santorini weather in

August
24.4

Santorini weather in

September
21.6

Santorini weather in

October
19.0

Santorini weather in

November
16.2

Santorini weather in

December