Mamaia — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Mamaia (Romania). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Mamaia help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Mamaia in the Black Sea today is 21°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Mamaia has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Mamaia will be 21.1°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 2 | 19.1°C | 18.0°C | |
| JUN 3 | 18.9°C | 18.3°C | |
| JUN 4 | 19.3°C | 18.3°C | |
| JUN 5 | 19.3°C | 18.5°C | |
| JUN 6 | 19.5°C | 19.0°C | |
| JUN 7 | 19.6°C | 20.0°C | |
| JUN 8 | 20.0°C | 20.3°C | |
| JUN 9 | 20.3°C | 21.0°C | |
| JUN 10 | 20.9°C | 21.0°C | 20.9°C |
| JUN 11 | 20.8°C | 20.9°C | |
| JUN 12 | 21.0°C | 21.0°C | |
| JUN 13 | 20.8°C | 21.0°C | |
| JUN 14 | 21.3°C | 21.0°C | |
| JUN 15 | 21.3°C | 21.1°C | |
| JUN 16 | 21.0°C | 21.1°C | |
| JUN 17 | 21.5°C | 21.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Mamaia is Romania’s most popular seaside resort on the Black Sea coast, located near the city of Constanța. The sea temperature here varies noticeably with the seasons. In winter months the water commonly sits between 6°C and 9°C, making swimming uncommon, while spring sees a steady rise with temperatures generally in the 9°C to 18°C range as the season progresses. Summer brings the warmest conditions, with sea temperatures typically ranging from 20°C to 26°C and often reaching their peak in July and August. Early autumn remains pleasant for bathing, with water temperatures usually between 14°C and 20°C before cooling again toward late autumn and winter.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 3°C | 7°C | 10°C |
| February | 4°C | 6°C | 8°C |
| March | 4°C | 7°C | 10°C |
| April | 5°C | 10°C | 17°C |
| May | 11°C | 15°C | 22°C |
| June | 16°C | 21°C | 27°C |
| July | 22°C | 25°C | 29°C |
| August | 22°C | 26°C | 28°C |
| September | 19°C | 23°C | 27°C |
| October | 14°C | 18°C | 24°C |
| November | 9°C | 15°C | 20°C |
| December | 5°C | 11°C | 14°C |
* Click on a month to view detailed water temperature data.
Mamaia: Weather Forecast
June 11
June 12
June 13
Location, Beaches & Local Information
Nearby Beaches & Facilities
Aroa Beach
Princess Club Beach
Habibi Beach
Tomis Beach
Iaki Beach
Riviera Beach
Three Lands Beach
Musset Lounge & Beach
Family Club Beach
Swimming Conditions
These temperature patterns shape the swimming and beach holiday experience in Mamaia. The warm summer months, especially July and August, offer the most comfortable conditions for prolonged sea swimming, family-friendly paddling and a wide range of water sports; the shallow, sandy shoreline and gradual drop-off make it suitable for children and less confident swimmers, while lifeguard services and beach facilities are plentiful in the main resort strip. Shoulder months such as June and September can still provide good bathing opportunities when the sea is often above 20°C, but swimmers should be prepared for variability due to wind or weather. For those visiting outside the warm season, pools and indoor aquatic facilities in the area offer alternatives to open-sea bathing.