Your December weather guide
CoolWeather in Halkidiki in December
Halkidiki in December suits a cool weather break, not a winter sun holiday. Average highs of 11°C and nights around 7°C call for layers rather than beachwear, while about 9 rainy days mean you should keep plans flexible. It is milder than London, but that does not make it warm. Go if you are happy with walks between showers and evenings wrapped up; choose another month if swimming and reliable warmth are the priority.
Long-term climate averages for Nea Moudania, not a forecast · 1991-2020
Halkidiki, month by month
Your snapshot
At a glance
The useful details for Nea Moudania.
- Average daytime high
- 11.4°C
- 9 in 10 days stay below 15°C
- Average night-time low
- 7.4°C
- coldest 10% of nights: 3°C or lower
- Compared with London
- +3.7°C
- London averages 7.7°C in December
- Sea temperature
- 15.5°C
- year to year: 15°C to 16°C
- Sunshine per day (est.)
- 3.7h
- 40% of 9.2 h of daylight
- Rainy days (1 mm+)
- 9
- 79 mm over the month
- Humidity
- 75%
- Days over 25°C
- 0%
- none over 30°C
- Record high 1991-2020
- 22.5°C
- 2010-12-02
- Record low 1991-2020
- -5.0°C
- 2001-12-19
- Flight from London
- ≈ 3 h 30 min
- 2174 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How December compares
December is the 10th warmest month of the year in Halkidiki and ranks 114th of 134 destinations we compare for December - see where else is hot in December. Within Greece it is 42nd of 44 (Greece in December). Against London's average high of 7.7°C in December, Halkidiki is 3.7°C warmer by day and 4.7°C warmer at night.
Daytime and night-time in December
The typical December day in Halkidiki peaks at 11.4°C, but that is an average: the warmest 10% of days reach 15.4°C or more. Days over 25°C are rare. Nights average 7.4°C; one night in ten drops to 3.1°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest December day here reached 22.5°C (2010-12-02) and the coldest night -5.0°C (2001-12-19).
Rain in December
Wet (more than 8 rainy days): about 9 days with 1 mm or more, 79 mm in total. Year to year it varies a lot - the wettest December was 2002 with 239 mm, the driest 2015 with 4 mm. Humidity averages 75%.
Sea temperature in December
The sea averages 15.5°C - too cold for most (under 18°c). Depending on the year it ranges from 14.5°C to 16.3°C. For the warmest sea here, come in August (26.7°C).
Sunshine and daylight
Around 3.7 hours of sunshine a day (estimated from cloud cover), 9.2 hours of daylight: the sun rises about 07:42 and sets about 17:02 local time in mid-December. Average cloud cover is 60%.
Is December a good time to visit Halkidiki?
December is not the strongest month here: cool days and frequent rain. The best months for Halkidiki on our scoring are August, July, June; months averaging 25°C or more: Jun, Jul, Aug.
Milder than London, but still coat weather
The daytime advantage over London is useful for spending time outdoors, but it is not a change of season. A coat, comfortable closed shoes and layers you can adjust are sensible packing choices. Milder days can reach 15°C or more, making a walk more comfortable, but do not build the trip around those conditions. At the colder end, nights can fall to 3°C or below, so bring something warmer for evenings rather than relying on a light jumper. This month suits travellers who prefer being out without summer heat and are comfortable dressing for winter, rather than anyone hoping to sit outside in thin clothing.
Keep outdoor plans flexible and start early
Rain is a meaningful catch in December, so a waterproof outer layer is more useful than packing only for dry cold. About 9 rainy days does not mean the whole month is a washout, but you should be willing to shift outdoor plans when wet weather arrives. There are about 3.7 hours of sunshine within 9.2 hours of daylight, leaving a limited window for enjoying the brighter conditions. Get out earlier rather than saving a long walk for late afternoon, and leave room for time indoors. If your holiday depends on long, sunny days outside, December is a poor fit; if you can adapt each day, it is more workable.
A little perspective
Halkidiki through the year
December is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 10.1°C | 5.7°C | 14.1°C | 4.2 | 56 | 8 | 0% |
| February | 11.0°C | 6.3°C | 13.5°C | 4.7 | 52 | 8 | 0% |
| March | 13.2°C | 8.1°C | 13.5°C | 5.8 | 58 | 9 | 0% |
| April | 16.5°C | 11.2°C | 14.6°C | 6.9 | 45 | 7 | 1% |
| May | 21.3°C | 15.8°C | 18.6°C | 8.3 | 49 | 7 | 13% |
| Junebest | 25.9°C | 20.5°C | 23.2°C | 10.7 | 29 | 5 | 58% |
| Julybest | 28.3°C | 23.0°C | 25.9°C | 12.0 | 36 | 5 | 95% |
| Augustbest | 28.6°C | 23.4°C | 26.7°C | 11.3 | 32 | 4 | 94% |
| September | 24.5°C | 19.7°C | 24.5°C | 8.3 | 46 | 6 | 42% |
| October | 20.0°C | 15.5°C | 21.3°C | 5.4 | 56 | 8 | 5% |
| November | 15.4°C | 11.3°C | 18.0°C | 4.0 | 57 | 8 | 0% |
| DecemberSelected | 11.4°C | 7.4°C | 15.5°C | 3.7 | 79 | 9 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in December
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Halkidiki in December FAQs
Plain answers, grounded in the averages.
Is Halkidiki hot in December?
Halkidiki is cool in December: the average daytime high is 11.4°C and nights average 7.4°C. Days over 25°C are rare in December.
Can you swim in the sea in Halkidiki in December?
The sea around Halkidiki averages 15.5°C in December, which is cold for swimming without a wetsuit. Between 1991 and 2020 it ranged from 15°C to 16°C depending on the year.
How much does it rain in Halkidiki in December?
Halkidiki sees about 9 rainy days (1 mm or more) and 79 mm of rain in a typical December. The wettest December between 1991 and 2020 was 2002 (239 mm) and the driest was 2015 (4 mm).
How sunny is Halkidiki in December?
Halkidiki gets around 3.7 hours of sunshine a day in December out of 9.2 hours of daylight (estimated from average cloud cover).
How does Halkidiki compare with the UK in December?
Halkidiki is on average 3.7°C warmer than London by day in December (11.4°C against 7.7°C).
What is the hottest December on record in Halkidiki?
Between 1991 and 2020 the hottest December day in Halkidiki reached 22.5°C on 2010-12-02, and the coldest night dropped to -5.0°C on 2001-12-19.
Is the sea warm enough for swimming in December?
The sea averages 15.5°C, which is cold rather than comfortably swimmable. Across years it ranges from 14°C to 16°C, so a warmer December still does not make this a good choice for a holiday centred on relaxed sea swimming.
Which months are better for a warmer holiday?
August, July and June are the better choices overall if warmth is the main reason for going. December is a cool, wet option, so choose it for a winter break with flexible plans rather than expecting summer conditions.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Néa Moudhaniá (Nea Moudania). Sea temperature from the nearest 5 km sea cell, 3 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C