United States Coastal Region
Delaware Sea Water Temperature
Compare sea surface temperatures across 3 top coastal destinations in Delaware. Check below for live marine observations, wave conditions, and monthly averages.
Beaches & Swimming Spots in Delaware— page 1 of 1
Coastal Waters
Bethany Beach
A temperate beach on the Coastal Waters, warmest around August at about 23.7°C.
Historical Sep Avg:22.9°C(73.2°F)
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Lewes Public Beach
A temperate beach on the Coastal Waters, warmest around August at about 24°C.
Historical Sep Avg:23.1°C(73.6°F)
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Slaughter Beach
A temperate beach on the Coastal Waters, warmest around August at about 24°C.
Historical Sep Avg:23.1°C(73.6°F)
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