The highest day temperature in May 2025 was 90°F. The lowest night temperature was 68°F. The average values for day and night temperatures during May were 78.1°F и 71.0°F respectivly.

The average sea surface temperature in May 2025 for Zarzis was 74.8°F. The maximum and minimum values were 72.0°F and 77.6°F respectively.

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

Precipitation total in May for Zarzis is 0.3 in. It makes may one of the least rainy months of the year.

The average wind speed in May is 13.2 mph. This value is relatively stable throughout the year.

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 Zarzis in May is 12.0 hours.