May is one of the excellent months to visit Costinesti, with daytime temperatures of 21°C (70°F) and lows of 14°C (57°F) at night. Some rainfall is typical for this time of year.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Costinesti.
Min Temperature
Max Temperature
Chance of Rain
Precipitation
Rainy days
Humidity
Sunshine
Percentage Sunshine
Pick a month to see the average temperature, rainfall and sunshine in Costinesti - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Costinesti typically rise from around 19°C (66°F) at the start of May to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).
49-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 Costinesti spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Costinesti between 1997 and 2026, these are the recorded extremes during May.
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).
For Costinesti in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Costinesti 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.
The train journey from Bucharest to Brasov is one of the most beautiful in Romania
In three hours, you'll get from Bucharest to Brasov by train. It is one of the most beautiful routes in Romania, certainly the most beautiful that can be done by express train.
7 of the most budget-friendly destinations in Europe
Discover Europe's top budget-friendly destinations including Budapest, Kotor, Krakow, and more, perfect for affordable and exciting travel.
Cycle the Danube trail
The Danube cycle route is one of the most popular cycling routes in Europe, and rightly so, because it is a varied route that is interesting both in terms of culture and nature.
The 10 most charming villages in France
Discover France's top 10 beautiful villages. From Normandy to the Côte d'Azur, experience quaint squares and cobbled streets. Which one will you visit this summer?
