Hamilton — Water Temperature in March

Water Temperature Range

18°C

minimum

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

March: Climate and Swimming Opportunities

Average Night Air Temperature

16°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

109 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

8 hrs

Average Wind Speed

23 km/h

Average Humidity

77%

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.