Colonial Beach — Water Temperature in May

Water Temperature Range

10°C

minimum

17°C

average

23°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	2025	2024	2023	2022
MAY 1	14°C	16°C	16°C	14°C
MAY 2	15°C	17°C	15°C	15°C
MAY 3	15°C	17°C	17°C	15°C
MAY 4	15°C	17°C	17°C	15°C
MAY 5	16°C	17°C	18°C	16°C
MAY 6	16°C	17°C	18°C	16°C
MAY 7	16°C	17°C	17°C	16°C
MAY 8	16°C	17°C	17°C	16°C
MAY 9	16°C	18°C	16°C	16°C
MAY 10	16°C	19°C	17°C	15°C
MAY 11	16°C	20°C	17°C	15°C
MAY 12	16°C	18°C	17°C	15°C
MAY 13	16°C	17°C	16°C	15°C
MAY 14	16°C	17°C	17°C	15°C
MAY 15	16°C	18°C	17°C	16°C
MAY 16	17°C	20°C	19°C	16°C
MAY 17	18°C	20°C	18°C	17°C
MAY 18	18°C	19°C	19°C	17°C
MAY 19	19°C	20°C	21°C	18°C
MAY 20	19°C	21°C	20°C	18°C
MAY 21	19°C	21°C	21°C	17°C
MAY 22	19°C	20°C	20°C	16°C
MAY 23	19°C	20°C	21°C	17°C
MAY 24	19°C	19°C	21°C	17°C
MAY 25	19°C	19°C	21°C	18°C
MAY 26	19°C	19°C	21°C	19°C
MAY 27	19°C	19°C	21°C	19°C
MAY 28	20°C	19°C	22°C	19°C
MAY 29	20°C	18°C	23°C	20°C
MAY 30	20°C	19°C	20°C	21°C
MAY 31	20°C	19°C	19°C	22°C

May: Climate and Swimming Opportunities

Average Night Air Temperature

12°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

104 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

8 hrs

Average Wind Speed

12 km/h

Average Humidity

67%

At such water and air temperatures, swimming feels cool and invigorating. It’s comfortable for a quick dip, and you’ll feel fine as long as you warm up soon after.