During May, Băile Herculane experiences pleasant daytime temperatures of 20°C (68°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 107 mm (4.2 in) is typical.
If you prefer dry days with pleasant temperatures, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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Pick a month to see the average temperature, rainfall and sunshine in Băile Herculane - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Băile Herculane typically stay consistent throughout May, with daily highs averaging around 20°C (68°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Băile Herculane spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
According to our 50 years of weather records for Băile Herculane, the following extremes were recorded between 1976 and 2026.
Find out more about the weather in Romania and which places have the best travel conditions in this month. See all of Romania in May →
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).
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. Prepare for significant rainfall with proper waterproof clothing and shoes.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full Băile Herculane climate overview or explore weather in Romania.
Where to go in May - average daytime high across popular destinations.
Bucharest
24°C (75°F) Timişoara24°C (75°F) Mamaia
21°C (70°F) Constanţa21°C (70°F) Cluj-Napoca21°C (70°F) Eforie Nord21°C (70°F) Sibiu
20°C (68°F) Braşov
19°C (66°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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