Expect average mid-winter afternoon temperatures to vary from 50°F (10°C) to 60°F (15°C). You'll need to bring some warm clothing and a windproof, waterproof jacket.
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The warmest Greek island in January is Crete, which has an average temperature of around 15°C (59°F) during the day and 10°C (50°F) at night.
The temperature of most Greek seas is about 14-16°C during the coldest winter months (January through March), with 14°C being suggested by the Open Water Swimming societies as the minimum water temperature at which wetsuits are optional.
Visiting Greece in winter, you will find that the beaches are quiet, the islands are a little deserted, and the weather is undoubtedly chillier. But that doesn't make it a wrong time to visit. In fact, in many ways, winter is the best time to experience this ancient nation's culture, history, and versatility.
Santorini has an average peak temperature of 15°C in December, which is quite mild for the winter. It's a lot warmer on the island than other parts of Europe, which is just one of the reasons why so many people flock here for a winter holiday.
So, while Greece may not be as warm as it is in the summer months, it can still be a great destination to visit in January for those who enjoy winter sports or cultural activities. It's important to pack warm clothing and layers to stay comfortable during the colder temperatures.
The vast majority of visitors hit the Greek Islands in the hot heyday of summer, but January offers sublime tranquility and bargain prices, with no other tourists in sight. Weather is unpredictable and chilly, but the sky is often crystal clear.
Winters are mild, generally. But very cold days, with snow, can happen. You should wear warm clothes. Gloves are not necessary (except if you are going to the mountains to ski…).
But despite this, temperatures remain mild or even high by European standards at this time of year, with 48-57°F (9-14°C) the average temperature: not too bad for sight-seeing or even hiking and cycling.
With the highest average monthly rainfall (4.5 inches/115 ml), least daily hours of sunshine, and some of the coolest temperatures of the year, January in Santorini is not the best month weather-wise.
While it's not warm enough to sunbathe and swim in the sea, the weather in Mykonos in January is perfect for a relaxing break on this peaceful island. The average temperature is 12°C, dropping to lows of around 8°C at night.
If you want a wider choice of bars and restaurants still open, it's best to stick to the main islands, such as Crete, Rhodes, Corfu, and Santorini. These islands have large permanent populations, and remain active even in the off-season.
Top tips for finding cheap flights to Greece. Book at least 1 week before departure in order to get a below-average price. High season is considered to be May, June and July. The cheapest month to fly from the United States is January.
The best month to visit Greece and experience unique traditions: February-April (in 2023) You probably know that Greeks love their traditions. There are unique and eccentric celebrations taking place throughout the year and throughout the country, not to mention the local customs specific to every place.
Best Time to Visit the Greek Islands: The Greek islands are at their best from late May to early October for swimming, suntanning, and beach weather; and from April to early November for sightseeing, hiking, and exploring. A good travel itinerary for Greece should consider the weather patterns of the Greek islands.
January is the middle of winter in Greece, and temperatures are generally cool to cold, especially in the northern parts of the country. The average high temperature in Athens is around 14°C (57°F) during the day, while nighttime temperatures can drop to around 5°C (41°F).
January is the coldest month of the year in Athens—nighttime lows dip to 45°F (7°C)—but it can also be one of the best months to visit due to the lack of crowds.
Visiting Greece Is More Affordable In WinterThe numbers drop significantly from October through the winter, and the costs of traveling to the islands become more affordable. Travelers can find excellent deals for flights, accommodations, and tours.
Santorini is best known as a romantic island with one-of-a-kind views, whereas Mykonos is more about sandy beaches and spirited partying. Depending on the vibe you seek, both islands suit holidays à deux. Solo travellers and groups of friends will also find both appealing, though Mykonos offers more in terms of edge.
Winter weather in MykonosPrecipitation, which is most frequent from October to March, is also never abundant, as evidenced by the island's arid landscape. This makes it livable year-round, and winter may be the best time to visit if you don't love the summer heat and tourist crowds and adore the stormy sea.