Best time to visit Symi

The best time to visit Symi for a beach holiday is from mid-June to late-September.

To explore the island and to visit the ruins of ancient Greece or of the Middle Ages, the best time is spring in April and May – so avoiding the summer heat; and during September and October, although, autumn experiences more rainfall.

Symi weather

Located close to the Turkish coast in the southeastern Aegean Sea, Symi has a Mediterranean climate with hot, sunny summers and mild, wet winters.

Summer, from June to mid-September, is hot and sunny, and enjoys a daily average temperature of 27°C (80°F), which can rise to around 34°C (93°F) on occasions.

A cooling sea breeze – the Meltimi – is fairly consistent throughout summer, although is less strong than in the central Aegean Sea.

Autumn, from mid-September to November, is warm and pleasant at the beginning of the season, then gradually becomes milder with frequent rain showers.

Winter, from December to February, is mild – occasionally cold – and wet, with an average temperature of 12°C (53°F).

Spring, from mid-March to May, is mild and becomes increasingly warmer and sunnier as the season progresses.

What is the best month to visit Skopelos?
June through September are the best months to visit Symi – the climate is perfect with hot, sunny weather and little to no rainfall.

July and August are especially popular, since this is the peak tourist season in Symi.

To avoid the crowds, higher prices and heat of summer, the months of May and October are also good for a range of outdoor activities.

Which is the hottest month in Symi?
The hottest month in Symi is normally August, with an average daily high temperature of 30°C (86°F), with high heat and humidity, and a low of 24°C (75°F)

However, on the warmest days of the month, the temperature may climb to around 35°C (95°F).

The hot season lasts from mid-June to mid-September, with an average daily high temperature above 28°C (82°F).

Which is the coldest month in Symi?
The coldest month in Symi is January, with an average high temperature of 15°C (59°F) and an average low of 10°C (50°F).

The cool season lasts from early-December through March, with an average daily high temperature below 17°C (62°F).

Which is the sunniest month in Symi?
The sunniest month in Symi is usually July, with around 12 hours of sunshine per day – that's an average of 97% of daylight hours.

What is the humidity in Symi?
Symi experiences significant seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 57% – 72% over the course of the year.

The more humid time of year lasts from mid-June through September, when you can expect the comfort level to be muggy at least 15% of the time.

The month with the most muggy days in Symi is August, with around 19 days that are muggy.

We derive the humidity comfort level from the dew point temperature, which measures moisture content in the air. A higher dew point feels muggy and uncomfortable.

November through May is generally comfortable, with no days in any month that are muggy.

When is the sea warmest in Symi?
The sea is usually at its warmest in Symi in August when the water temperature reaches 26°C (78°F), which is pleasant for swimming.

The sea is warm enough for swimming from June to October.

Which month has the most rain in Symi?
January is usually the wettest month in Symi, with 145mm (5.7in) of rainfall on average. There are normally 10 days with some rainfall in January.

The rainy season lasts from November through March, with a greater than 19% chance of a given day being a wet day. The heaviest rainall in Symi is during December and January.

The drier season lasts from early-April through October. The month with the least rainfall in Symi is July.

Which is the windiest month in Symi?
The windiest month of the year in Symi is February, with an average hourly wind speed of 21 kilometres per hour (13 mph; 11 knots).

The windy part of the year lasts from late-November to early-April, with average wind speeds of more than 19 kilometres per hour (12 mph; 10 knots).

The less-windy time of year lasts from early-April to late-November. The calmest month of the year in Symi is May, with an average hourly wind speed of 16 kilometres per hour (10 mph; 8.6 knots).

The predominant average hourly wind direction is from the north throughout the year in Symi.

Symi Weather Averages

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average high temperature (°C)
15 15 17 20 24 28 30 30 28 24 20 17
Average low temperature (°C)
10 10 11 14 17 21 24 24 22 19 14 11
Average daily sunshine (hrs)
4 5 6 8 9 12 12 11 9 7 5 4
Average daily daylight (hrs)
10 11 12 13 14 14 14 13 12 11 10 9
Comfort level
No heat No heat No heat No heat & humidity Low heat & humidity icon Moderate heat & humidity icon High heat & humidity icon High heat & humidity icon Moderate heat & humidity icon Low heat & humidity icon No heat & humidity No heat & humidity
Average relative humidity (%)
70 69 68 66 64 58 57 60 61 67 71 72
UV Index (max)
2 3 5 7 8 10 10 9 7 5 3 2
Average days of rainfall (≥1mm)
10 8 6 5 2 1 - - - 3 6 11
Average monthly rainfall (mm)
145 90 65 40 25 2 - - - 45 100 140
Average wind speed (km/h)
21 21 20 18 16 18 20 20 19 17 18 20
Average sea temperature (°C)
17 16 16 17 20 23 25 26 25 23 20 18
Symi, Dodecanese, Greece

Holiday seasons

High season: July and August, when hotel and restaurant prices sky-rocket.

Low season: From March to June – the temperature is cooler, hotel prices are more reasonable and the crowds non-existent.

Note: The winter off-season, from November through February, is generally quiet everywhere; many hotels, restaurants and bars close down and the beaches are deserted. Ferry and air services are dramatically reduced.

Source: Weather data for Symi is based on meteorological statistics gathered for the 30-year period 1991 to 2020 by the Hellenic National Meteorological Service (HNMS) at the closest weather station: Rhodes International Airport (RHO), located about 30km (19mi) southeast of Symi.

Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.

Latest update: Best time to visit Symi: 11 May, 2024

Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.