Sými monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Sými

Sými average temperature chart (Celsius) Sými average temperature chart (Fahrenheit)
Average monthly temperatures in Sými (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.9 14.3 16.4 19.9 24.4 29.1 31.8 31.8 28.9 24.2 19.3 15.6
°F 57.1 57.8 61.6 67.9 76 84.3 89.3 89.2 84.1 75.5 66.7 60

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Sými monthly rainfall chart (mm) Sými monthly rainfall chart (inches)
Average monthly rainfall in Sými (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 181 136 87 36 22 10 3 4 13 69 108 186
inches 7.1 5.4 3.4 1.4 0.9 0.4 0.1 0.2 0.5 2.7 4.3 7.3
Rainy days 14 12 9 7 4 3 5 5 4 6 9 14

Average annual rainfall in Sými: 919.7mm (362.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Sými

Sými average daily sunshine chart
Average daily sunshine Sými
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.6 6.3 7.7 9.2 11.2 14 14.8 13.9 12 8.8 6.7 5.4

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Sými average minimum / maximum temperatures (Celsius) Sými average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Sými (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 6.9 7.1 8.4 11.2 14.6 18.7 21.5 21.5 18.8 14.9 11.2 8.6
Max °C 14.1 14.5 16.6 20.2 24.7 29.3 32.1 32 29.2 24.4 19.5 15.7
Min °F 44.4 44.8 47.2 52.1 58.3 65.6 70.7 70.7 65.9 58.8 52.2 47.4
Max °F 50.9 51.4 54.5 60.2 67.4 75.2 80.2 80.2 75.2 67.4 59.6 53.9

Sea temperature

The graph below shows the average sea temperature.

Sými average sea temperature chart (Celsius) Sými average sea temperature chart (Fahrenheit)
Average sea temperature around Sými in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.9 16.3 16.3 17.1 19.3 22.2 24 25.1 24.3 22.4 19.9 17.9
°F 62.3 61.4 61.3 62.9 66.8 72 75.2 77.1 75.7 72.3 67.8 64.2

Wind speed

The graph below shows the average wind speed.

Sými average winspeed by month (km/h) Sými average winspeed by month (mph)
Average wind speed in Sými (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 11 10 10 9 10 12 11 10 8 8 10
mph 6 7 6 6 6 6 7 7 6 5 5 6

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Sými relative humidity averages
Average relative humidity in Sými
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
70% 70% 69% 65% 62% 55% 52% 54% 58% 65% 71% 72%

Other monthly averages

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Sými weather stats

Sými weather statistics
Hottest month: July 31.8°C 89.2°F
Driest month: July 3mm 0.1ins
Sunniest month: July 14.8hrs
Coldest month: January 13.9°C 57°F
Wettest month: December 186mm 7.3ins
Warmest sea: August 25.1°C 77.2°F
Map showing location of Sými (36.61246, 27.8378) Sými map pin © Google

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