Sliven monthly weather averages

Average daytime temperature

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

Sliven average temperature chart (Celsius) Sliven average temperature chart (Fahrenheit)
Average monthly temperatures in Sliven (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.9 2.9 7.6 13.4 18.8 22.6 25 24.7 21 15 9.5 3.2
°F 33.6 37.3 45.7 56 65.8 72.6 77 76.5 69.8 58.9 49 37.8

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.

Sliven monthly rainfall chart (mm) Sliven monthly rainfall chart (inches)
Average monthly rainfall in Sliven (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 58 56 54 63 78 80 58 47 42 50 66 73
inches 2.3 2.2 2.1 2.5 3.1 3.2 2.3 1.8 1.6 2 2.6 2.9
Rainy days 10 10 9 10 12 10 8 6 5 6 9 11

Average annual rainfall in Sliven: 793.4mm (312.4 inches)

Average daily sunshine

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

Sliven average daily sunshine chart
Average daily sunshine Sliven
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 3.6 4.4 5.2 6.7 8.1 9.2 10.5 10.1 8.5 6.5 4.2 3.2

Day / night temperatures

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

Sliven average minimum / maximum temperatures (Celsius) Sliven average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Sliven (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.9 -4.1 -1.5 3.2 7.8 11.2 12.9 12.4 9.1 5 1.4 -3.2
Max °C 1.1 3.1 7.9 13.6 19.1 22.9 25.3 25 21.3 15.2 9.7 3.4
Min °F 21.5 24.6 29.4 37.8 46 52.1 55.2 54.3 48.4 41 34.4 26.2
Max °F 27.7 31.1 37.8 47.1 56.1 62.6 66.4 65.7 59.4 50.2 41.9 32.2

Sea temperature

The graph below shows the average sea temperature.

Sliven average sea temperature chart (Celsius) Sliven average sea temperature chart (Fahrenheit)
Average sea temperature around Sliven in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.8 9.2 9.6 11.7 16.2 21.2 23.9 24.8 22.6 18.8 14.9 11.8
°F 49.7 48.5 49.3 53 61.2 70.2 75.1 76.6 72.6 65.9 58.8 53.2

Wind speed

The graph below shows the average wind speed.

Sliven average winspeed by month (km/h) Sliven average winspeed by month (mph)
Average wind speed in Sliven (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 13 12 12 10 9 9 9 9 10 11 12
mph 8 8 7 7 6 6 6 5 6 6 7 7

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.

Sliven relative humidity averages
Average relative humidity in Sliven
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
82% 81% 76% 71% 70% 67% 64% 64% 67% 73% 80% 83%

Other monthly averages

UV index Best time to go?

Sliven weather stats

Sliven weather statistics
Hottest month: July 25°C 77°F
Driest month: September 42mm 1.7ins
Sunniest month: August 10.1hrs
Coldest month: January 0.9°C 33.6°F
Wettest month: June 80mm 3.1ins
Warmest sea: August 24.8°C 76.6°F
Map showing location of Sliven (42.68583, 26.32917) Sliven map pin © Google

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