World Resorts USA Miami Beach Weather

Miami Beach Sea Temperature in December

Average sea water temperature in December:
+77.5°F
Minimum sea water temperature in December: 80.8°F
Maximum sea water temperature in December: 73.6°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 77.4°F. The highest and lowest sea temperatures during the month were 79.3°F and 75.4°F.

Monthly sea water temperature in Miami Beach, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
Kailua Kona 79.3°F 78.3°F
West Palm Beach 79.0°F 78.4°F
Fort Lauderdale 78.7°F 77.6°F
Honolulu 78.6°F 78.3°F
Hawaii 78.5°F 78.3°F
Kauai 78.2°F 76.0°F
Maui 78.1°F 77.8°F
Miami Beach 77.4°F 75.9°F
Oahu 77.1°F 77.2°F
Islamorada 76.5°F 73.4°F
Key Largo 76.4°F 73.1°F
Key West 75.9°F 72.6°F
Miami 75.6°F 73.0°F
Everglades 73.7°F 69.7°F
Marco Island 71.9°F 68.0°F
South Padre Island 71.7°F 71.9°F
Naples 71.5°F 67.7°F
Sanibel Island 71.0°F 67.1°F
Cocoa Beach 69.6°F 66.6°F
Siesta Key 69.3°F 65.6°F

Best time for vacation in Miami Beach

Sunniest months:
March 13 days
April 13 days
May 12 days
Warmest months:
August 88.5 °F
July 87.9 °F
September 86.8 °F
Warmest sea temp:
August 86.5 °F
July 85.8 °F
September 85.5 °F
Coldest months:
January 72.9 °F
February 75.4 °F
December 76.3 °F
Rainiest months:
July 10 days
August 9 days
June 8 days
Windiest months:
November 13.1 mph
March 12.8 mph
October 12.6 mph

Miami Beach on a weather map

Miami Beach
+75°F
SE 10 mph
Feels like: +75°F
Precip.: 0%
Places in USA:
Name
°F
+37°F
+75°F
+75°F
+63°F
+64°F
+73°F
+75°F
+70°F
+30°F
+79°F
+52°F
+64°F
+59°F
+55°F
+19°F
24 Hours Forecast
Miami Beach
Local time: 15:42
December 30, tuesday
1800
70°F
S
13 mph
2100
64°F
S
13 mph
December 31, wednesday
0000
63°F
S
13 mph
0300
61°F
S
14 mph
0600
59°F
S
15 mph
0900
61°F
S
16 mph
1200
66°F
S
13 mph
1500
70°F
S
8 mph
Units of measurement: °C / °F