Thinking about a Santorini holiday around Christmas? You’ll find the weather mild, but honestly, it can change on you pretty quickly. During the day, temperatures usually reach about 13–15°C, while nights drop to around 11°C. Rain is definitely more common than in other months. It’s not really beach season, but the island feels calmer and the softer light gives everything a cozy glow.
You won’t get the heat of summer, but you’ll avoid the freezing winters up north. The sea sits at about 18°C—brisk, for sure, but some brave souls still take a dip. With short days and occasional showers, it makes sense to mix outdoor adventures with some downtime indoors.
This cooler, quieter, and festive vibe shapes how you’ll see the island. Packing smart and knowing what to expect helps you really enjoy Santorini’s December charm.
Typical Weather Conditions in Santorini Around Christmas
When December rolls around, Santorini offers mild days, cooler nights, and a higher chance of rain than you’ll get in summer. You’ll still catch several hours of daylight, but the sun sets earlier, and breezes can pick up—especially along the coast or up in the hills.
Temperature Trends in December
Santorini stays relatively mild during Christmas, especially compared to places farther north. Daytime highs usually hit 15–17°C (59–63°F), and nights cool off to around 11–13°C (52–55°F).
Bring a light jacket or sweater for the evenings, since the wind can make it feel colder. The sea averages 18°C (64°F), which most people find too cold for a real swim, though you’ll always see someone try.
You won’t deal with freezing cold, but you’ll appreciate indoor heating at night. If you want to get outside, midday feels the nicest.
Rainfall and Humidity Levels
December brings the most rain you’ll see all year in Santorini. You can expect about 70–75 mm of rainfall, spread out over several days. Showers don’t usually last long, but they can be heavy.
Humidity goes up compared to summer, often sitting between 65–75%. Evenings can feel a bit damp.
You’ll probably get a few rainy days, so a compact umbrella or lightweight raincoat is a smart move. Luckily, dry stretches are still common, so you can get out and explore.
Sunlight and Daylight Hours
In December, Santorini gets less sunshine than in summer, but you’ll still see about 5–6 hours of sun per day. Days are short—sunrise is around 7:30 AM and sunset hits close to 5:00 PM.
You’ll want to plan your outings earlier, since afternoons bring the warmest and brightest light. That’s the best time to stroll or sightsee.
Clouds show up more often, but you’ll still get those magical clear days for soaking in the views.
Wind Patterns and Breezes
Winds in December usually stay light to moderate, but they can feel stronger on the cliffs or beaches. Typical speeds run from 10–20 km/h with the occasional gust.
When the wind comes from the north, it feels colder. Southerly breezes bring a bit more warmth. You won’t get those wild Meltemi winds like in summer, so it’s easier to enjoy being outside.
If you’re walking near the caldera or catching a ferry, you’ll notice the wind chill. A windbreaker or some layers will keep you comfortable.
Sea Temperatures and Swimming Conditions
The sea in December feels noticeably cooler than in summer, and swimming isn’t for everyone. The water’s still swimmable for short bursts, but it’s nothing like the peak season.
Average Sea Temperature in December
Around Santorini, the Aegean averages about 18°C (64°F) in December. Depending on the spot—like Akrotiri or Perivolos Beach—you might see anything from 16°C (61°F) up to 20°C (68°F).
That’s a big drop from the summer average of 25°C (77°F). Most people find it too chilly for long swims, but if you’re used to cold water, a quick dip is possible.
Here’s a quick look at typical temps:
| Location | Avg Temp | Min Temp | Max Temp |
|---|---|---|---|
| Thira | 18.1°C | 16.5°C | 20.4°C |
| Akrotiri | 18.1°C | 16.3°C | 20.4°C |
| Perivolos Beach | 18.1°C | 16.5°C | 20.6°C |
These numbers come from long-term records, so you can count on them if you’re thinking about a swim.
Beach and Water Activities
Even if you skip swimming, Santorini’s beaches are still worth a visit in December. Walking along the shore, checking out volcanic rocks, or just relaxing by the sea is honestly pretty nice.
If you do want to get in the water, a wetsuit will help you stay comfortable. Some locals and winter-loving visitors take quick swims, but most folks stick to land.
Snorkeling or diving isn’t as popular now—the water’s clear, but it just feels cold. Instead, you might enjoy hiking along the coast, snapping photos, or catching a winter sunset over the beach.
How the Weather Impacts Travel and Sightseeing
Cooler temps and shorter days in December change how you see Santorini. Rain and mild weather keep crowds down and affect which places stay open.
Crowds and Visitor Numbers
You’ll notice way fewer tourists in Santorini at Christmas than in summer. With highs usually in the mid‑50s °F (around 13°C), big tour groups mostly stay away. Places like Oia and Fira are a lot easier to walk around without the summer swarm.
Public transport runs less often, but buses still link the main villages. With fewer people, you can explore places like Megalochori or the Akrotiri Lighthouse without waiting around or squeezing onto packed buses.
Open restaurants and shops cater more to locals. The slower pace lets you actually soak up the island vibe, not just rush from sight to sight. Just remember, some services close briefly for the holidays, so it’s smart to check ahead.
Open Attractions and Seasonal Closures
Weather can decide which spots you’ll want to visit. Outdoor sites like Ancient Thera involve climbing and can get slippery after rain, so wear good shoes and stay flexible with your plans. The Akrotiri Lighthouse is open all year, but wind can make it less fun.
You’ll find several indoor attractions that stay open regardless of the weather. The Museum of Prehistoric Thera and the Archaeological Museum of Thera are both open most of the winter, and they’re perfect for rainy days.
Some tavernas and galleries in villages like Megalochori shut down for the season. But with fewer people around, you can take your time at the places that are open. Double-check local hours before you go to avoid surprises.
What to Pack for Santorini in December
Santorini in December brings cool days, chilly nights, frequent rain, and only a few hours of sun. You’ll want clothes that keep you warm, handle damp weather, and let you comfortably wander towns, hike, or explore museums.
Essential Clothing and Layers
Daytime highs hover around 13–15°C (55–59°F), and nights get down to 10–11°C (50–52°F). Layering is definitely your friend.
Pack long-sleeve shirts, sweaters, and light jackets so you can adjust as needed. A warm cardigan or fleece comes in handy indoors or on calm days.
For pants, bring jeans or heavier trousers—they’ll keep you warm and are comfy for walking. If hiking’s on your list, toss in light thermal leggings to wear under your pants on colder mornings.
Accessories like scarves and gloves will make a difference on windy nights, especially near the caldera.
Rain Gear and Accessories
December is Santorini’s wettest month, with rain on about 10–12 days. Even if it doesn’t pour all the time, you should expect some dampness.
A waterproof jacket with a hood works better than an umbrella, since wind can make umbrellas tricky. If you’re set on an umbrella, pick a sturdy, compact one.
Bring a light rain poncho that fits in your day bag for hikes or long walks. A waterproof cover for your backpack is smart for keeping electronics and valuables dry.
You’ll still want sunglasses and sunscreen for those bright, clear days. A reusable water bottle is handy too, since many shops close early during the off-season.
Footwear Recommendations
Walking’s the best way to see Santorini in December, so good shoes matter. Streets in Fira, Oia, and other villages are often slippery stone paths that can be uneven.
Pack comfortable walking shoes with decent grip for sightseeing. Waterproof trainers or hiking shoes are great since rain can make things slick.
If you’re tackling the Fira to Oia trail, go for sturdy hiking boots with ankle support—especially after rain when it gets muddy.
For evenings, casual boots will keep you warm and still look good for restaurants or wine bars. Skip the sandals—they won’t help with the rain or the cold.
Top Things to Do in Santorini Over Christmas
Christmas in Santorini means fewer crowds, so you’ll have more space to explore. The island offers cultural sites, quiet villages, and scenic walks that are honestly more enjoyable in the mild winter.
Exploring Fira and Oia
Fira, the main town, stays lively in winter and gets a sprinkle of Christmas decorations. You can wander narrow streets lined with shops still open for locals and visitors. Cafés and tavernas serve up warm meals and local wines, perfect for unwinding after exploring.
Oia, famous for its whitewashed houses and cliff views, is much quieter in December. Strolling through its alleys is a lot more relaxed. The castle ruins above Oia are a favorite for sunsets, which can get extra colorful under winter skies.
Both towns are best on foot. You’ll deal with lots of stairs and steep paths, so wear comfy shoes. With fewer tourists, it’s easier to enjoy the views and snap photos whenever you want.
Visiting Museums and Archaeological Sites
December’s a great time for museums—you won’t have to fight crowds. The Museum of Prehistoric Thera in Fira shows off artifacts from the Bronze Age, like pottery and frescoes from Akrotiri.
Nearby, the Archaeological Museum of Thera has sculptures, inscriptions, and vases from later times. These collections make it easier to get a feel for Santorini’s long history.
You can head up to Ancient Thera on Mesa Vouno mountain. There are ruins of houses, temples, and even a theater. The uphill walk is way easier in cool weather.
If you want a shorter trip, the Akrotiri site gives you a look at a town buried in volcanic ash around 1600 BC. Covered walkways keep you sheltered from wind or rain.
Scenic Villages and Viewpoints
Villages like Megalochori and Pyrgos give you a quieter, more authentic taste of Santorini. Megalochori’s narrow lanes, churches, and old houses feel untouched by big tourism. Pyrgos sits on a hill and offers sweeping views, especially at sunset.
The Akrotiri Lighthouse on the southern tip is another highlight. It’s open and peaceful, making it a top spot to watch the sea and sky change colors.
You can also check out Emporio, a medieval village with stone alleys and a Venetian tower. These villages are almost empty in winter, so you can really take your time.
Outdoor Activities and Hiking
December usually brings mild temperatures, so spending time outside feels pretty comfortable. Lots of people go for the Fira to Oia hike, which stretches about 10 kilometers along the edge of the caldera.
You’ll pass through Firostefani and Imerovigli. The whole way, you get those wild cliff and sea views that make Santorini famous.
You might want to check out Skaros Rock near Imerovigli too. It used to have a fortress, but now it’s just a peaceful spot to enjoy the caldera.
The walk isn’t long, but you’ll deal with some uneven steps. Honestly, sturdy shoes make a big difference.
Walking along the volcanic beaches—like Perissa or Kamari—can be a good option. Swimming? Not so much in winter, but the black sand and quiet vibe still make these spots worth a look.
If you’re after something even shorter, you could drive or walk to the Akrotiri volcanic area. Sometimes, boat tours still run in winter, so you might even get to step onto the volcanic islands and check out the crater without the blazing summer heat.
Is December a Good Time to Visit Santorini?
Visiting Santorini in December feels totally different from the summer rush. You’ll notice fewer crowds, lower prices, and cooler weather, which can be a plus or a minus depending on what you’re after.
Pros and Cons of Visiting in December
You’ll get lower costs on hotels and villas, sometimes way cheaper than in summer. Fira and Oia seem much quieter, so you can actually enjoy museums, churches, and those tiny restaurants without waiting around.
The island’s wineries usually stay open. You can try Santorini’s famous white and red wines, which is honestly a nice bonus.
But yeah, the weather stays mild but damp. Daytime highs usually hit 12–16°C (52–61°F). Rain happens pretty often, maybe 10–12 days in the month.
You won’t get tons of sunshine—maybe four hours a day on average. Hiking from Fira to Oia is still doable, but if the wind or rain shows up, it’s not always super pleasant.
Keep in mind, seasonal attractions close. Most beach clubs, luxury resorts, and a bunch of tour operators take a break for winter.
Ferry schedules get limited. Island-hopping turns into a bit of a hassle.
If you’re into cultural sightseeing, local festivals, or just quiet evenings, December might actually fit you just fine.
Comparing December to Other Months
December feels much cooler and quieter than summer (June–August). In summer, temperatures shoot above 30°C (86°F) and the skies usually stay clear.
But honestly, you’ll also deal with big crowds and high prices. December flips that around, giving you mild weather, fewer visitors, and way better deals on places to stay.
If you look at spring (April–May) or fall (September–October), December turns out wetter and a bit gloomier. Those shoulder months? People often call them the best time to visit Greece since you get decent weather and don’t have to fight the crowds.
December isn’t really the month for swimming or sunbathing, but it does give off a more local, authentic vibe.
When you compare December to January and February, it’s a touch warmer. Sea temperatures in December usually sit around 17°C (63°F), which beats what you’ll find in the deeper winter months.
If you want to see Santorini in winter but aren’t a fan of freezing, December is probably your best bet.