Seabrook Island Weather & Climate: Best Time to Visit

In Seabrook Island, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 32°C (90°F) in July. In January, the coolest month of the year, temperatures drop to a moderate 15°C (59°F).

At night, temperatures range from around 24°C (75°F) in July to 5°C (41°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Seabrook Island experiences significant rainfall throughout the year, averaging 1184 mm (47 in) of precipitation annually. Seabrook Island can be quite wet during August, receiving approximately 180 mm (7.1 in) of precipitation over 15 rainy days.

In contrast, during the driest month (May), you will experience much drier conditions, with 62 mm (2.4 in) of precipitation spread across 8 rainy days. For more details, please visit our Seabrook Island Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seabrook Island can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Seabrook Island.

The city experiences its highest humidity in August, reaching 79%. In February, the humidity drops to its lowest level at 67%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year