The highest day temperature in April 2026 was 90°F. The lowest night temperature was 54°F. The average values for day and night temperatures during April were 78.8°F и 64.9°F respectivly.

The average sea surface temperature in April 2026 for St. Simons Island was 71.2°F. The maximum and minimum values were 66.0°F and 74.2°F respectively.

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

Precipitation total in April for St. Simons Island is 0.8 in.

The average wind speed in April is 6.9 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 St. Simons Island in April is 8.7 hours.