Cayman Islands · Grand Cayman
Seven Mile Beach
Sea
85.8°F
Air
–
UV
–
Bathtub
Above 28°C
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Seven Mile Beach · The Westin
Camera at The Westin Grand Cayman Seven Mile Beach Resort & Spa · streamed via IPCamLive
Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
75°F
79°F
82°F
86°F
90°F
93°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
8180.9
8080.4
8180.6
8181.4
8382.7
8383.3
8584.6
8585.2
8685.5
8585.4
8484.1
8282.5
AvgAvg °F
8181.4
8180.9
8181.3
8282.0
8483.8
8584.6
8585.3
8686.3
8686.5
8686.1
8484.4
8382.9
MaxMax °F
8281.8
8181.4
8281.8
8382.5
8584.8
8585.4
8686.2
8787.1
8787.4
8787.2
8585.0
8483.6
Warmest in September (86.5°F). Coldest in February (80.9°F). Comfortable for swimming year-round.
About Seven Mile Beach
Grand Cayman's western shore is fronted by Seven Mile Beach, a 6.3-kilometre strip of coral-fine sand sheltered from the easterly trade winds and edged by a reef that drops into the Cayman Trench just offshore. Across the island to the north, Rum Point opens onto a hammock-strung bay calmer still, while Smith Cove tucks a snorkelling pocket between low limestone bluffs on the southern coast. Sea temperatures hold between 28 and 29 °C from July through September, with Owen Roberts International ten minutes by road from George Town.