Last updated: August 27, 2025
May in București, Romania, offers a delightful mix of warmth and occasional showers, with maximum temperatures reaching 31°C (88°F) and an average of 17°C (63°F). This month is characterized by a minimum temperature of 4°C (39°F), providing a refreshing contrast. While precipitation totals around 69 mm (2.7 in) over 11 days, creating a lush environment, the humidity levels hover at 71%, nurturing the vibrant flora. Whether you're exploring the city's historic sites or enjoying outdoor cafés, May's weather offers a charming backdrop for every adventure.
In May, București begins to shake off the remnants of winter, welcoming warmer days and vibrant blossoms. Temperatures typically start with a minimum of 4°C (39°F), climbing to an average of 17°C (63°F), and peaking at a delightful 31°C (88°F). This month marks a noticeable shift from the chill of April, where nights were still cool, to the more inviting warmth of early summer. The progression from April's max of 29°C (84°F) to May's heights showcases the city's rapid transition into a season filled with sunshine and outdoor activities, making it an ideal time for exploring the lively atmosphere of București. With the comforts of milder evenings, May invites both locals and visitors to enjoy the city's vibrant parks, outdoor cafes, and cultural festivities.
In May, Bucuresti experiences a notable increase in precipitation, with 69 mm (2.7 in) of rainfall spread over 11 days, marking one of the wetter months of the year. This uptick follows April's relatively dry spell of 44 mm (1.7 in) and highlights a transition into summer, as precipitation levels ramp up in anticipation of the thunderstorms common in June. Compared to the colder months, where rainfall averages hovered around 40-60 mm, May’s precipitation signals a shift towards the lush greenery of late spring. The increase in rainy days reflects the city's shift from the lighter showers of spring to more substantial downpours, setting the stage for a vibrant and lively summer ahead.
In May, București experiences a refreshing shift as humidity levels drop to 71%, marking a noticeable transition from the wetter months of winter and early spring. After starting the year with humidity peaking at 88% in January, the air gradually becomes drier, with significant declines through April's 73%. This trend of decreasing humidity continues into June, which records a slight further dip to 70%. As the city prepares for the warmer summer months, May offers a comfortable milieu, balancing pleasant warmth with just enough moisture in the air, making it an ideal time to explore the vibrant urban landscape.
As spring transitions into summer, May brings a notable rise in the UV Index in Bucuresti, reaching a significant 8, which falls into the very high exposure category. This increase signifies that sun exposure can lead to skin damage in just 15 minutes, prompting residents and visitors to take necessary precautions. Following a steady climb from January's low Index of 2, which allowed for up to 45 minutes of safe sun time, the UV Index has soared—jumping from April's 7 to May's 8. This trend continues into June and July, where peak values are recorded at 9. With the sun becoming increasingly intense, it's essential to stay informed about UV levels to ensure skin safety. For more details, visit the complete Bucuresti UV Index.
UV Risk Categories
As May arrives in București, the city basks in an impressive 398 hours of sunshine, marking a delightful peak in the transition from spring to summer. This notable increase from 346 hours in April heralds not only warmer days but also a vibrant atmosphere filled with outdoor activities. The trend continues into June, where sunshine reaches an even higher 405 hours, suggesting that summer is just around the corner. After the long, gray months of winter, which saw only 169 hours of sunlight in January, the gradual ascent in daylight hours paints a picture of hope and rejuvenation. With each passing month, the warmth and brightness climb steadily, making May a truly radiant month for both locals and visitors eager to enjoy all that București has to offer.
As spring transitions into summer in București, May offers a tantalizing promise of sunny days with a 41% chance of sunshine. This figure mirrors the preceding month of April, suggesting a period of stability in weather patterns. Interestingly, while May's sunshine probability doesn't increase significantly, it serves as a precursor to the sunnier months ahead, with June and July boasting sunny probabilities of 43% and 70% respectively. This trend indicates that while May can be somewhat fickle, it is also a vital step towards the consistently sunny days of summer, making it a delightful time to enjoy the blooming beauty of the city.
As spring transitions into summer, București, Romania experiences a steady increase in daylight duration, peaking in the warmer months. Starting from just 9 hours in January, the days gradually lengthen, with a notable leap to 14 hours by May. This trend continues into June and July, where the city basks in 15 hours of daylight, providing ample time for outdoor activities and exploration. However, as August approaches, daylight begins to wane, dropping back to 13 hours, a reminder of the impending autumn. By the time October arrives, daylight reduces to 10 hours, signaling the slow return to winter's shorter days, with December bringing the shortest span of just 8 hours. This cyclical pattern highlights the contrast between the vibrant energy of summer and the subdued tranquility of winter in București.
As May arrives in Bucuresti, the average wind speed remains consistent at 2.7 m/s (6 mph), mirroring the gentle breezes of both March and April. This stable airflow hints at a transitional phase, as the city is on the cusp of summer, gliding smoothly from the brisker winds of winter and early spring. Notably, the winds begin to soften in June, dropping to 2.0 m/s (4 mph), suggesting a calming atmosphere as temperatures rise. Overall, May continues the trend of mild winds, inviting residents and visitors alike to enjoy the vibrant city parks and bustling outdoor cafes as they bask in the pleasant spring air.
Weather in Bucuresti varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Bucuresti, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present starkly contrasting weather patterns. In May, temperatures range from a minimum of 4°C (39°F) to a pleasant average of 17°C (63°F), peaking at a maximum of 31°C (88°F). The month experiences around 69 mm (2.7 in) of precipitation over approximately 11 days, with a humidity level of 71%. In contrast, January is characterized by subzero temperatures, with a minimum of -23°C (-9°F) and an average of 0°C (32°F), reaching a maximum of only 15°C (59°F). This winter month sees less precipitation at 40 mm (1.6 in) across about 7 days, but the humidity is higher at 88%. The differences between these two months highlight the transition from a cool spring to a frigid winter. For more details on January’s weather, you can visit Bucuresti weather in January.
May and February present stark contrasts in weather patterns. In May, temperatures range from a chilly minimum of 4°C (39°F) to a warm maximum of 31°C (88°F), with an average of 17°C (63°F). This month sees about 69 mm (2.7 in) of precipitation spread across 11 days, accompanied by a humidity level of 71%. In comparison, February is much colder, with temperatures dipping as low as -14°C (6°F) and peaking at 21°C (69°F), averaging only 3°C (37°F). It experiences less precipitation at 43 mm (1.7 in) over 8 days but has a higher humidity of 85%. For more specific details, you can explore Bucuresti weather in February.
May's weather is distinctly milder compared to March, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 31°C (88°F). In contrast, March experiences a more drastic chill, with temperatures dipping as low as -19°C (-2°F) and peaking at 25°C (77°F). While both months see a similar amount of precipitation, with May receiving 69 mm (2.7 in) over 11 days and March receiving 61 mm (2.4 in) over 9 days, the humidity is notably higher in March at 82%, compared to May's 71%. For a more detailed look at March's weather conditions, you can refer to Bucuresti weather in March.
In comparing the weather between April and May, it's clear that May brings significantly warmer temperatures, with an average of 17°C (63°F) compared to April's 12°C (54°F). The maximum temperatures in May can reach up to 31°C (88°F), while April peaks at 29°C (84°F). Although May experiences more rainfall, totaling 69 mm (2.7 in) over 11 days compared to April's 44 mm (1.7 in) over 7 days, the humidity levels remain fairly consistent, with May at 71% and April at 73%. For more detailed information on April's climate, visit Bucuresti weather in April.
In May, the weather begins to warm up, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 31°C (88°F) and an average of 17°C (63°F). The month experiences some rainfall, with a total of 69 mm (2.7 in) spread over 11 days, along with a humidity level of 71%.
By June, temperatures rise significantly, starting at a minimum of 7°C (46°F) and peaking at 37°C (99°F), with an average temperature of 22°C (71°F). This month sees increased precipitation of 115 mm (4.5 in) occurring over 15 days while maintaining a slightly lower humidity level of 70%. For more specific details, you can refer to Bucuresti weather in June.
In May, temperatures range from a cool minimum of 4°C (39°F) to a pleasant average of 17°C (63°F), peaking at a warm 31°C (88°F). The month sees about 69 mm (2.7 in) of precipitation over 11 days, accompanied by a relatively high humidity level of 71%. In contrast, July experiences significantly warmer temperatures, with a minimum of 12°C (54°F) and an average of 24°C (75°F), reaching highs of 38°C (100°F). Although July has slightly more precipitation at 90 mm (3.5 in) over just 10 days, the humidity drops to 66%. To learn more about what to expect during this summer month, you can check out Bucuresti weather in July.
May and August exhibit distinct differences in weather patterns. In May, temperatures range from a chilly 4°C (39°F) to a warm 31°C (88°F), with an average of 17°C (63°F). The month is characterized by higher humidity at 71% and more frequent rainfall, with 69 mm (2.7 in) of precipitation over 11 days. In contrast, August sees a more stable temperature range, with minimums at 11°C (52°F) and maximums reaching up to 38°C (101°F), averaging around 25°C (77°F). Additionally, August is drier with only 33 mm (1.3 in) of rain over 6 days and lower humidity at 48%. For more detailed insights, you can check Bucuresti weather in August.
May and September present distinctly different weather patterns. In May, temperatures range from a chilly 4°C (39°F) at their lowest to a warm 31°C (88°F) at their peak, with an average temperature of 17°C (63°F). The month also experiences a fair amount of precipitation, totaling 69 mm (2.7 in) over approximately 11 days, paired with higher humidity at 71%. In contrast, September boasts a milder temperature minimum of 1°C (35°F) and a maximum reaching 36°C (97°F), with a comfortable average of 20°C (68°F). The month is notably drier, with just 23 mm (0.9 in) of rain during only 3 days and lower humidity at 57%. For more detailed information, you can check the Bucuresti weather in September.
In May, temperatures in București are generally warmer, with an average of 17°C (63°F) and a maximum that can reach 31°C (88°F). This month experiences about 69 mm (2.7 in) of precipitation over 11 days, paired with a humidity level of 71%. In contrast, October brings cooler temperatures, averaging around 13°C (56°F) and still reaching a maximum of 31°C (87°F). The precipitation remains similar at 70 mm (2.8 in) but occurs over fewer days, only 7. Additionally, October tends to be more humid, with a humidity level of 79%. For more detailed insights on October weather, you can explore Bucuresti weather in October.
May and November showcase a striking contrast in weather patterns. May generally enjoys milder temperatures, with a minimum of 4°C (39°F) and an average of 17°C (63°F), peaking at a warm 31°C (88°F). In contrast, November experiences a chillier climate, with temperatures dropping to a minimum of -5°C (24°F) and averaging only 7°C (45°F), although it can still reach a maximum of 28°C (82°F) on warmer days. Precipitation is more frequent in May, totaling 69 mm (2.7 in) across 11 days, whereas November sees less rain at 43 mm (1.7 in) over just 8 days. The humidity remains relatively high in both months, with November being slightly more humid at 87% compared to May's 71%. For more details, you can check Bucuresti weather in November.
May and December in București present contrasting weather experiences. In May, temperatures range from a mild 4°C (39°F) at night to a warm 31°C (88°F) during the day, creating a pleasant average of 17°C (63°F). The month sees around 69 mm (2.7 in) of precipitation, spread over 11 days, with a humidity level of 71%. On the other hand, December brings much chillier conditions, with temperatures dipping as low as -9°C (16°F) and peaking at 15°C (60°F), resulting in an average of just 3°C (37°F). Precipitation decreases slightly to 63 mm (2.5 in) over the same number of days, but humidity rises to 88%, making December feel much colder. For more details, you can check Bucuresti weather in December.
In May, Bucuresti transitions from the chill of spring to the warmth of early summer, showcasing a delightful mix of temperatures and increasing humidity. While the mercury can soar up to a sweltering 31°C (88°F), the pleasant average temperature around 17°C (63°F) offers a comfortable escape from the colder months. May distinguishes itself with a notable increase in precipitation days, contributing to a lush, vibrant landscape, albeit with nearly 70 mm (2.7 in) of rain throughout the month. As the city embraces the greener scenery and longer days, it marks a dynamic shift from previous months that encourages both locals and visitors to venture outdoors and enjoy the blossoming atmosphere. For further insights, check out Bucuresti Climate.