United States Coastal Region

Connecticut Sea Water Temperature

Compare sea surface temperatures across 81 top coastal destinations in Connecticut. Check below for live marine observations, wave conditions, and monthly averages.

Beaches & Swimming Spots in Connecticut— page 2 of 4

James Bay

Groton Long Point Main Beach

A temperate beach on the James Bay, warmest around August at about 21.7°C.

Historical Sep Avg:20.4°C(68.7°F)
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James Bay

Groton Long Point South Beach

A temperate beach on the James Bay, warmest around August at about 21.7°C.

Historical Sep Avg:20.4°C(68.7°F)
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James Bay

Grove Beach

A temperate beach on the James Bay, warmest around August at about 22.1°C.

Historical Sep Avg:20.9°C(69.6°F)
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James Bay

Hammonasset Beach

A temperate beach on the James Bay, warmest around August at about 22.7°C.

Historical Sep Avg:21.6°C(70.9°F)
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James Bay

Harbor Point Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Harbor View Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Harveys Beach

A temperate beach on the James Bay, warmest around August at about 22.1°C.

Historical Sep Avg:20.9°C(69.6°F)
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James Bay

Hotchkiss Grove Beach

A temperate beach on the James Bay, warmest around August at about 23.2°C.

Historical Sep Avg:22.1°C(71.8°F)
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James Bay

Indian Cove Beach

A temperate beach on the James Bay, warmest around August at about 22.7°C.

Historical Sep Avg:21.6°C(70.9°F)
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James Bay

Indiantown Beach

A temperate beach on the James Bay, warmest around August at about 22.1°C.

Historical Sep Avg:20.9°C(69.6°F)
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James Bay

Jacobs Public Beach

A temperate beach on the James Bay, warmest around August at about 22.7°C.

Historical Sep Avg:21.6°C(70.9°F)
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James Bay

Jennings Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Kiddie's Beach

A temperate beach on the James Bay, warmest around August at about 21.7°C.

Historical Sep Avg:20.4°C(68.7°F)
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James Bay

Lake Mohegan Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Limewood Beach

A temperate beach on the James Bay, warmest around August at about 23.2°C.

Historical Sep Avg:22.1°C(71.8°F)
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James Bay

Long Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Long Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Lordship Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Mamanasco Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

Marvin Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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James Bay

McCook Park Beach

A temperate beach on the James Bay, warmest around August at about 21.7°C.

Historical Sep Avg:20.4°C(68.7°F)
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James Bay

Middle Beach

A temperate beach on the James Bay, warmest around August at about 22.1°C.

Historical Sep Avg:20.9°C(69.6°F)
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James Bay

Momauguin Beach

A temperate beach on the James Bay, warmest around August at about 23.2°C.

Historical Sep Avg:22.1°C(71.8°F)
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James Bay

Money Beach

A temperate beach on the James Bay, warmest around August at about 23.4°C.

Historical Sep Avg:22.3°C(72.1°F)
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