May weather forecastMamaia, Romania
May
Weather in May
In Mamaia, May ushers in the quintessence of spring, paving the way for summer's arrival. Record temperatures, both high and low, are made and broken in May, but they remain significantly warmer than the previous months. The longer daylight hours promote the notion of the start of the wonderful season. For their part, while sea and sunshine hours lure vacationers, the UV index warns of an intensifying sun above, asking visitors to take precautions.Temperature
Mamaia's May weather shows an increase in high-temperatures, moving from April's refreshing 14°C (57.2°F) to an enjoyable 19°C (66.2°F). In Mamaia, in May, the average low-temperature is a cool 12°C (53.6°F).Rainfall
In Mamaia, in May, it is raining for 9 days, with typically 40mm (1.57") of accumulated precipitation. Throughout the year, there are 97 rainfall days, and 410mm (16.14") of precipitation is accumulated.Sea temperature
In Mamaia, Romania, the average seawater temperature in May is 14°C (57.2°F).Note: Swimming in 14°C (57.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
The average length of the day in May is 14h and 47min.On the first day of the month, sunrise is at 05:55 and sunset at 20:09. On the last day of May, in Mamaia, sunrise is at 05:24 and sunset at 20:41 EEST.
Sunshine
In Mamaia, the average sunshine in May is 6h.UV index
In May, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 7 in May interprets into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Mamaia, Romania
- Average high temperature in May: 19°C
The warmest months (with the highest average high temperature) are July and August (26°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in May: 12°C
The months with the highest average low temperature are July and August (18°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average rainfall in May
Mamaia, Romania
- Average rainfall in May: 40mm
The wettest months (with the highest rainfall) are June and November (42mm).
The driest month (with the least rainfall) is March (27mm).
Average rainfall days in May
Mamaia, Romania
- Average rainfall days in May: 9 days
The months with the highest number of rainy days are January and December (10 days).
The months with the least rainy days are August and September (5 days).
Average sea temperature in May
Mamaia, Romania
- Average sea temperature in May: 14°C
The best month for swimming (with the highest average sea temperature) is August (24°C).
The coldest month (with the lowest average sea temperature) is February (6°C).
Average daylight in May /
Average sunshine in May
Mamaia, Romania
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 6h
The month with the most sunshine is July (Average sunshine: 8h).
The months with the least sunshine are January, February and December (Average sunshine: 2h).
Average UV index in May
Mamaia, Romania
- Average UV index in May: 7
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).





