Hatteras — Water Temperature in May

Water Temperature Range

16°C

minimum

21°C

average

25°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

May: Climate and Swimming Opportunities

Average Night Air Temperature

15°C

Average Day Air Temperature

25°C

Precipitation Amount per Month

103 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

9 hrs

Average Wind Speed

17 km/h

Average Humidity

75%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.