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Sveti Vlas Climate by Month

Sveti Vlas is a unique combination of fresh mountain air, a pleasant maritime climate and a beautiful landscape. Because of the favorable location, Sveti Vlas became a popular resort and spa location in the 1960s for the treatment of lung diseas. Because of this Sveti Vlas has always been more luxurious than many other Bulgarian tourist destinations.

Average day and night temperature

Visitors to Sveti Vlas can expect significant temperature changes throughout the year. Average daytime temperatures range from a comfortable 28°C in August, the warmest time of the year, to a chilly 7°C during cooler months like January. At night, temperatures typically average around 2°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Sveti Vlas experiences moderate precipitation patterns, averaging 645 mm yearly. While rainfall varies throughout the year, each season offers its own charm. October brings wetter days averaging 67 mm of precipitation, spread over 5 rainy days.

In contrast, August experiences a drier climate, with about 33 mm of rainfall spread across 4 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seasonal changes in sunshine hours are quite dramatic in Sveti Vlas. While July receives considerable daily sunshine with up to 11.9 hours, January marks the darkest time of the year, where sunshine is scarce with only 3.1 hours of sunlight per day.

Monthly hours of sunshine

Data from: Sunny Beach, Bulgaria (5 KM, 3 Miles).

Daily hours of sunshine

Data from: Sunny Beach, Bulgaria (5 KM, 3 Miles).

Average water temperature

The mean water temperature over the year in Sveti Vlas ranges from 7°C in February to 27°C in August.

Water temperature over the year

Data from: Sunny Beach, Bulgaria (5 KM, 3 Miles).

The best time of year to visit Sveti Vlas in Bulgaria

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Sveti Vlas?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Sveti Vlas?
    August has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Sveti Vlas?
    The coldest month is January with an average maximum temperature of 7°C.
  • Which is the wettest month in Sveti Vlas?
    October tops the wettest month list with 67 mm of rainfall.
  • Which is the driest month in Sveti Vlas?
    August is the driest month with 33 mm of precipitation.
  • Which is the sunniest month in Sveti Vlas?
    July is the sunniest month with an average of 357 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Sveti Vlas

    Wed   Dec 11
    11°C | 3°C
    SW 11 km/h
    broken clouds and no rain

    broken clouds and no rain

    Thu   Dec 12
    9°C | 3°C
    NW 18 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Fri   Dec 13
    6°C | -1°C
    N 14 km/h
    broken clouds and no rain

    broken clouds and no rain