30YearWeather
Symi in December
Symi weather in December - Greece
🌤️Mild & Comfortable

Symi Weather in December

Plan your December trip to Symi, Greece. Based on 30 years of NASA data, expect temperatures of 17°C (high) to 15°C (low), with 34% rain probability and 8 hours of daily sunshine. The Coastal Waters averages 21°C in December. Pack rain gear for around 29 rainy days.

Avg High
17°C

Hottest around day 1

Avg Low
15°C

Coolest around day 31

Rainy Days
29days

34% avg rain chance

Sunshine
8hrs/day

Winter season

Sea Temperature in December

Coastal Waters(Ocean)

20.7°C

Monthly Average

Water Feel
🏊Pleasant

Comfortable for most swimmers

Swim Rating
👍Good for swimming

Based on average sea surface temperature

Body of Water
Coastal Waters

Ocean

Symi coastline

Symi December Weather Calendar

Click any day to see detailed weather information

Day 1
cloudy
Cloudy
18°C31%
Day 2
cloudy
Cloudy
18°C32%
Day 3
cloudy
Cloudy
18°C34%
Day 4
cloudy
Cloudy
18°C34%
Day 5
cloudy
Cloudy
18°C39%
Day 6
rain
Rainy
17°C42%
Day 7
cloudy
Cloudy
17°C38%
Day 8
cloudy
Cloudy
17°C39%
Day 9
cloudy
Cloudy
17°C40%
Day 10
cloudy
Cloudy
17°C37%
Day 11
cloudy
Cloudy
17°C38%
Day 12
cloudy
Cloudy
17°C39%
Day 13
cloudy
Cloudy
17°C37%
Day 14
cloudy
Cloudy
17°C37%
Day 15
cloudy
Cloudy
17°C35%
Day 16
cloudy
Cloudy
17°C31%
Day 17
cloudy
Cloudy
17°C30%
Day 18
cloudy
Cloudy
16°C27%
Day 19
cloudy
Cloudy
16°C26%
Day 20
cloudy
Cloudy
16°C29%
Day 21
cloudy
Cloudy
16°C29%
Day 22
cloudy
Cloudy
16°C30%
Day 23
cloudy
Cloudy
16°C30%
Day 24
cloudy
Cloudy
16°C27%
Day 25
cloudy
Cloudy
16°C24%
Day 26
cloudy
Cloudy
16°C21%
Day 27
cloudy
Cloudy
16°C28%
Day 28
cloudy
Cloudy
16°C33%
Day 29
cloudy
Cloudy
16°C39%
Day 30
cloudy
Cloudy
16°C40%
Day 31
rain
Rainy
16°C43%

Essential Travel Info for Symi

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

Currency

EUR

€ Euro

Language

Greek

Driving

Right side

Safety

High Safety

GPI: 1.838

Travel Intelligence

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Health & Safety Advisory

CDC travel health recommendations

6 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Greece. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Greece.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Greece.If rabies exposures occur while in Greece, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is December a Good Time to Visit Symi?

👌A reasonable choice for your trip
Short Answer

December perfect for Symi's beaches - 20.7°C water temperature, 17°C days, minimal 34% rain. Book beachfront early as this is peak coastal season.

Decision Factors

Vaccinations required

Yellow Fever

Seismically active region

38 earthquakes recorded in this month (30-year data)

Health precautions needed

Be aware of: Leptospirosis, Crimean-Congo Hemorrhagic fever, Leishmaniasis

Shoulder season - balanced conditions

50% of peak - good value with moderate crowds

Good For

  • 📸
    Photographers

    7.5h sunshine, 52% clear skies for golden hour shots

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🌡️
    Heat-sensitive visitors

    Manageable 16.6°C without oppressive humidity

Who Should Avoid

Suitable for most traveler types

Related Guides

Best Time to VisitWhen to AvoidSymi Overview
930 observations30-year historical data
Confidence: 95%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Symi in December averages 17°C with 34% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Symi in December

What are the temperatures in Symi in December?

Daytime highs average 17°C, nights drop to 15°C. Temperatures remain fairly consistent.

How many rainy days in Symi in December?

Expect around 29 days with measurable rainfall. An umbrella is advisable.

What to wear in Symi in December?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is December peak season in Symi?

This is shoulder season—moderate prices and manageable crowds.