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Sunny Beach Weather in May
Sunny Beach in May averages 21°C (70°F) during the day and 13°C (55°F) at night. Some rainfall is typical for this time of year.
Rainfall in Sunny Beach in May
You can typically expect 7 days of rain this month, averaging around 49 mm (1.9 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Sunny Beach in May
Sunny Beach in May has excellent weather. Days reach 21°C (70°F) and nights cool to 13°C (55°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 13°C (55°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 Sunny Beach in May
Expect a lot of sunshine this month, with about 277 hours of sun. These sunny conditions add to the overall experience.
Average water temperature in May
At 18°C (64°F), the water is getting there, comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.
Sunny Beach Temperature in May
Min Temperature
13°C (55°F)
Max Temperature
21°C (70°F)
Water Temperature
18°C (64°F)
Chance of Rain
25%
Precipitation
49 mm (1.9 in)
Rainy days
7 days
Humidity
76%
Sunshine
277 hours
Percentage Sunshine
Sunny Beach Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sunny Beach - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Sunny Beach 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 records for Sunny Beach in May
Browse day-by-day weather records for Sunny Beach spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sunny Beach historical weather extremes in May
According to our 29 years of weather records for Sunny Beach, the following extremes were recorded between 1997 and 2026.
- On May 21, 1997, temperatures climbed to 32°C (90°F), marking the warmest May day on record.
- Sunny Beach experienced its chilliest May day on May 1, 2011, reaching only 11°C (52°F).
- The lowest overnight temperature recorded in May was 2°C (36°F) (May 5, 2000).
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 →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sunny Beach in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 18°C (64°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Sunny Beach in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping10/10 -
Outdoor sports10/10
Sunny Beach 3-Day Forecast
More climate data for Sunny Beach
Temperature Rainfall Sunshine Humidity Water Temp
See the full Sunny Beach climate overview or explore weather in Bulgaria.
Popular in May
Where to go in May - average daytime high across popular destinations.
Sveti Vlas
20°C (68°F) Varna City
21°C (70°F) Nesebar20°C (68°F) Sunny Beach21°C (70°F) Sofia21°C (70°F) Golden Sands20°C (68°F) Sozopol20°C (68°F) Bansko
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