Water temperature in Sullivans Island
50.2
°F
January 29, 22:33
Trend:
increasingYesterday:
49.5°FTomorrow:
50.5°F
Sunrise:
Sunset:
Day Length:
10 h. 33 min.Sullivans Island in February
Minimum:
51.0°FAverage:
56.9°FMaximum:
67.6°FSea water temperature in Sullivans Island today
As of now, in Sullivans Island, the water temperature is 50.2°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 3.4°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.Recent sea temperature and forecast
Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 60.1°F on 2016, while the historical minimum was 45.8°F on 2025.
Daily water temperature in Sullivans Island
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jan 15 | 55.5°F | 48.2°F | 55.3°F |
| Jan 16 | 54.4°F | 49.0°F | 55.4°F |
| Jan 17 | 53.7°F | 49.7°F | 55.3°F |
| Jan 18 | 53.1°F | 48.5°F | 54.8°F |
| Jan 19 | 52.7°F | 49.1°F | 54.3°F |
| Jan 20 | 52.3°F | 50.0°F | 54.4°F |
| Jan 21 | 52.0°F | 49.9°F | 54.6°F |
| Jan 22 | 51.3°F | 49.9°F | 54.6°F |
| Jan 23 | 52.8°F | 49.3°F | 54.6°F |
| Jan 24 | 53.6°F | 49.1°F | 54.2°F |
| Jan 25 | 54.2°F | 46.5°F | 54.0°F |
| Jan 26 | 54.1°F | 44.1°F | 53.6°F |
| Jan 27 | 50.4°F | 44.2°F | 53.4°F |
| Jan 28 | 49.5°F | 45.2°F | 53.4°F |
| Jan 29 | 50.2°F | 45.8°F | 53.6°F |
| Jan 30 | 50.5°F | 46.9°F | 53.9°F |
| Jan 31 | 50.3°F | 47.9°F | 53.7°F |
| Feb 1 | 50.2°F | 47.7°F | 53.6°F |
| Feb 2 | 50.4°F | 48.6°F | 53.9°F |
| Feb 3 | 50.4°F | 49.2°F | 53.8°F |
| Feb 4 | 50.8°F | 51.0°F | 54.2°F |
| Feb 5 | 51.0°F | 52.6°F | 54.5°F |
* actual - actual temperature values
** forecast - projected values for the next week
Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.
Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.