The highest day temperature in May 2025 was 83°F. The lowest night temperature was 53°F. The average values for day and night temperatures during May were 69.2°F и 58.2°F respectivly.

The average sea surface temperature in May 2025 for Capetown was 56.9°F. The maximum and minimum values were 53.8°F and 59.0°F respectively.

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation total in May for Capetown is 1.8 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 7.9 mph. It makes May the most windless month of the year for Capetown.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Capetown in May is 7.3 hours.