Christchurch — Water Temperature in May

Water Temperature Range

10°C

minimum

13°C

average

16°C

maximum

Water Temperature Chart for May

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

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

Climate and Swimming Opportunities in Christchurch in May

Average Day Air Temperature

13°C

Average Night Air Temperature

6°C

Precipitation Amount per Month

58 mm

Number of Rainy Days

Daylight per Day

9 hrs

Sunshine per Day

4 hrs

Average Wind Speed

16 km/h

Average Humidity

84%

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.