Hamilton — Water Temperature in May

Water Temperature Range

19°C

minimum

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

May: Climate and Swimming Opportunities

Average Night Air Temperature

19°C

Average Day Air Temperature

26°C

Precipitation Amount per Month

75 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

8 hrs

Average Wind Speed

19 km/h

Average Humidity

76%

At such water and air temperatures, swimming is pleasant and refreshing rather than hot. After you get in, it feels comfortable, and you’ll warm up quickly when you come out.