Betty's Bay — Water Temperature in May

Water Temperature Range

13°C

minimum

16°C

average

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

May: Climate and Swimming Opportunities

Average Night Air Temperature

11°C

Average Day Air Temperature

21°C

Precipitation Amount per Month

69 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

6 hrs

Average Wind Speed

13 km/h

Average Humidity

76%

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.