Mamaia — Water Temperature in May

Water Temperature Range

11°C

minimum

15°C

average

22°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
MAY 1	-10°C	12°C	12°C	12°C
MAY 2	12°C	12°C	13°C	12°C
MAY 3	13°C	13°C	14°C	13°C
MAY 4	12°C	13°C	14°C	14°C
MAY 5	12°C	14°C	14°C	14°C
MAY 6	12°C	14°C	14°C	14°C
MAY 7	12°C	14°C	14°C	15°C
MAY 8	13°C	14°C	14°C	16°C
MAY 9	13°C	15°C	15°C	15°C
MAY 10	14°C	14°C	15°C	14°C
MAY 11	14°C	15°C	15°C	15°C
MAY 12	14°C	15°C	15°C	15°C
MAY 13	14°C	15°C	15°C	15°C
MAY 14	14°C	15°C	14°C	15°C
MAY 15	14°C	15°C	14°C	15°C
MAY 16	14°C	15°C	14°C	16°C
MAY 17	14°C	15°C	14°C	15°C
MAY 18	14°C	15°C	14°C	15°C
MAY 19	14°C	15°C	14°C	16°C
MAY 20	14°C	15°C	14°C	16°C
MAY 21	15°C	15°C	14°C	15°C
MAY 22	15°C	15°C	13°C	16°C
MAY 23	15°C	16°C	14°C	17°C
MAY 24	16°C	16°C	14°C	17°C
MAY 25	17°C	16°C	15°C	17°C
MAY 26	17°C	17°C	15°C	17°C
MAY 27	17°C	16°C	15°C	16°C
MAY 28	18°C	17°C	15°C	18°C
MAY 29	18°C	16°C	15°C	18°C
MAY 30	19°C	17°C	15°C	19°C
MAY 31	19°C	17°C	16°C	18°C

May: Climate and Swimming Opportunities

Average Night Air Temperature

12°C

Average Day Air Temperature

20°C

Precipitation Amount per Month

35 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

6 hrs

Average Wind Speed

14 km/h

Average Humidity

79%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.