Weather in Kalymnos in December
December is early winter in Kalymnos: cool and one of the wettest times of year. Daytime highs average around 15°C / 59°F, and nights drop to about 9°C / 48°F. The sea averages about 19°C / 66°F, bracing, and too cool for many swimmers. Expect rain on around 10 days and about 139 mm over the month, often in heavy bursts with dry spells between them. Kalymnos is a rugged, rocky island, and its limestone cliffs are famous among climbers from all over the world. Winter here is shaped by the wind: storms sweep through regularly, often followed by calm, bright days. Daylight lasts about 9½ hours, so plan sightseeing for the middle of the day. Pack a warm jacket, layers and a waterproof, plus shoes that can handle wet paths. Short days and changeable skies are part of the appeal, with fewer visitors and a more local feel. Make the most of the middle of the day, when it's warmest and brightest.
Swimming in Kalymnos in December
At around 19°C / 66°F, the sea in Kalymnos is swimmable in December if you don't mind a chill. The best time for swimming is July, August and September, with August usually the warmest. Masouri is a local favorite. There are no lifeguards or beach services out of season, so swim with care. If you feel the cold, a wetsuit top makes a difference.
Crowds & Prices in Kalymnos in December
You'll have Kalymnos largely to yourself in December. It's the cheapest time to visit, with the best deals on accommodation. Christmas and New Year bring some Greek visitors home, but it stays quiet. It's a good time to see everyday life, away from the summer bustle. With so few visitors, the atmosphere is genuinely local, and people have time to chat. You can usually book at short notice.
What's Open in Kalymnos in December
Ferry links from Piraeus and Kos to Kalymnos continue through December, though with fewer sailings than in summer. The island also has an airport with flights from Athens. Life goes on in the main town, but most resort hotels and beach tavernas close until spring. Archaeological sites and museums keep shorter winter hours. Most sites close on 25 and 26 December.
Festivals & Holidays in Kalymnos in December
Christmas is celebrated with church services, carols sung door to door by children and festive sweets like melomakarona and kourabiedes. On 6 December, Saint Nicholas, patron saint of sailors, is honored in harbors across Greece, and decorated boats appear alongside Christmas trees. Locals in Kalymnos mark these dates in the traditional way, and visitors are welcome to join in. Beyond that, it's a month of everyday life, with locals filling the cafés and tavernas in the evenings.
Is December a Good Time to Visit Kalymnos?
It depends on what you want. In December, Kalymnos is peaceful and inexpensive, but the season is over, the sea is too cool for most swimmers and the weather can turn. Expect highs of around 15°C / 59°F, lows near 9°C / 48°F and rain on around 10 days. It's fine for a quiet break or climbing its famous crags. For a proper beach holiday, go in June, September, October or November.
Frequently Asked Questions
What time does the sun set in Kalymnos in December?
In early December, the sun sets in Kalymnos at around 4:55 pm. By mid-month it's around 4:55 pm, and by the end of December around 5:05 pm. All times are Greek local time. Masouri is a favorite spot, with the sun setting behind Telendos.
Does it get stormy in Kalymnos in December?
December is one of the stormiest months in the Aegean. Strong winds and bands of rain come through regularly, and the worst storms can cancel ferries for a day or more. There are calm, bright days in between, and snow at sea level is very rare. If you're traveling by ferry, allow a buffer day before any flight home.
Is December a good time for rock climbing on Kalymnos?
It's possible on dry, sunny days, and some climbers come for the peace, but December brings more rain and wind, and many climbing-focused rooms and cafés close. Most climbing trips aim for spring or autumn instead.
Do I need a car on Kalymnos in December?
It helps. Buses run on a much thinner timetable in December, and some routes stop completely, so a hire car is the easiest way to explore. Rental rates are low off-season, but fewer agencies are open, so book ahead.
Is December or January better for visiting Kalymnos?
December has the edge for atmosphere, with Christmas decorations and New Year celebrations, while January is quieter still, with Epiphany on 6 January. The weather is similar: cool, changeable and occasionally stormy. Both suit travelers who want the island at its most local.
Kalymnos Weather by Month
