Sveti Vlas Weather in May
May in Sveti Vlas brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 14°C (57°F). The perfect weather makes it a solid choice for a visit.
Rainfall in Sveti Vlas in May
Typically around 7 days of rainfall are expected, averaging 47 mm (1.9 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Sveti Vlas in May
Sveti Vlas has perfect weather in May, with days reaching 20°C (68°F) and nights cooling to 14°C (57°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Sveti Vlas in May
Enjoy a sunny month with about 277 hours of sunshine, the clear skies make Sveti Vlas even more beautiful.
Average water temperature in May
With water at 18°C (64°F), swimming is comfortable for most people. It feels refreshing rather than cold, though it depends a bit on personal preference.If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Bulgaria, check out our Sveti Vlas's climate page.
Sveti Vlas Temperature in May
Min Temperature
14°C (57°F)
Max Temperature
20°C (68°F)
Water Temperature
18°C (64°F) *
Chance of Rain
24%
Precipitation
47 mm (1.9 in)
Rainy days
7 days
Humidity
76% *
Sunshine
277 hours *
Percentage Sunshine
*
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Sveti Vlas typically rise from around 19°C (66°F) at the start of May to approximately 23°C (73°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).
Average temperatures in May
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Sveti Vlas in May
Browse day-by-day weather records for Sveti Vlas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sveti Vlas historical weather extremes in May
Based on 29 years of weather observations (1997-2026), these are the most extreme conditions recorded in Sveti Vlas.
- The warmest day in May was on May 21, 1997, with a maximum of 32°C (90°F).
- Sveti Vlas experienced its chilliest May day on May 1, 2011, reaching only 11°C (52°F).
- Sveti Vlas registered its coldest May night on May 5, 2000, with temperatures dropping to 2°C (36°F).
Best Places in Bulgaria in May
Find out more about the weather in Bulgaria and which places have the best travel conditions in this month. See all of Bulgaria in May →
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What to Wear in Sveti Vlas in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Expect water temperatures of around 18°C (64°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Sveti Vlas in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Bulgaria, check out our Sveti Vlas's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Sveti Vlas climate overview or explore weather in Bulgaria.
