St. Simons Island Weather: May
 |
Average Day Temperature: | 85.4°F |
|
Average Night Temperature: | 71.3°F |
|
Sea Water Temperature: | 78.9°F |
|
Number of Sunny Days: | 13 days |
| Sunshine Hours: | 13.4 - 14.0 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 0.9 in | |
| detailed information | ||
forecast
| St. Simons Island |
Temperature
| St. Simons Island |
Air Temperature in May, °F
The highest day temperature in May 2026 was 93°F. The lowest night temperature was 55°F. The average values for day and night temperatures during May were 83.4°F и 72.9°F respectivly.
St. Simons Island Water Sea Temperature in May, °F
The average sea surface temperature in May 2026 for St. Simons Island was 79.1°F. The maximum and minimum values were 73.2°F and 86.4°F respectively.
Most of the days in May are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in May, in
Precipitation total in May for St. Simons Island is 0.9 in.
The average wind speed in May is 6.3 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 May is 8.7 hours.
St. Simons Island on the Weather Map
| Boston |  |
+80 |
| Chicago |  |
+82 |
| Hawaii |  |
+84 |
| Houston | |
+108 |
| Las Vegas |  |
+116 |
| Los Angeles | |
+96 |
| Maui | |
+70 |
| Miami | |
+92 |
| Myrtle Beach | |
+84 |
| New York | |
+82 |
| San Diego | |
+96 |
| San Francisco | |
+64 |
| Santa Monica | |
+86 |
| Sarasota | |
+92 |
| Washington | |
+84 |
| 1800 |  |
90°F | NW 5 mph |
| 2100 |  |
82°F | SE 6 mph |
| 0000 | |
82°F | W 6 mph |
| 0300 | |
76°F | N 2 mph |
| 0600 |  |
74°F | NE 4 mph |
| 0900 | |
80°F | NE 4 mph |
| 1200 |  |
98°F | NE 4 mph |
| 1500 | |
98°F | NW 7 mph |