Most days are warm enough to swim and snorkel. The first week in December is usually the nicest weather of the year -- not too hot and mostly sunny skies. Once in a while, a cold front reaches us that early, but not too often.
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Because of the Caribbean conditions, the weather in Bahamas in December sees very warm temperatures and lots of sunshine. The average daytime high's around 26°C, with seven hours of sunshine from 11 hours of daylight. The temperature dips to only 20°C on occasional milder days.
Because of the tropical climate, you can fish, dive and snorkel year-round. You also can comfortably swim in the ocean, as water temperature in The Bahamas rarely dips below 72 degrees (22 degrees Celsius) near the shorelines.
Nassau is around the same temperature as Miami in the summer. The daily temperature in Nassau averages around 28°C (82°F) in July, and Miami fluctuates around 83°F (28°C). People are often attracted to the plentiful sunshine in Miami this time of the year.
“The Bahamas boasts tropical warm temperatures 365 days a year. Casual summer wear is perfect for your days in the sun but be sure to pack a light jacket or sweater for the cooler evenings from December to February which can dip to 72 degrees,” Duncombe advises.
It is swimsuit/shorts weather all year in the Caribbean. Of course, you can encounter a rainy day but it is never Cold. Water temp can vary by currents/storms but for most people who don't need the water to be 85 degrees and up :D, swimming is almost always reasonably possible.
The waters off the Bahamas are safe and ideal for swimming.This archipelago of nearly 700 islands is located in the Atlantic Ocean, more towards the southeast direction of America (near Florida).
Summary of cost of living in Bahamas: A family of four estimated monthly costs are 4,934.6$ without rent.A single person estimated monthly costs are 1,396.5$ without rent. Cost of living in Bahamas is, on average, 24.2% higher than in United States.
Geographically, the Bahamas is located in the Atlantic Ocean, while the majority of other Caribbean territories are located in the Caribbean Sea. Although both are considered warm-weather destinations during the summer months, the Bahamas becomes more temperate in the winter.
The graph below shows the range of monthly Nassau water temperature derived from many years of historical sea surface temperature data. The warmest water temperature is in August with an average around 86.4°F / 30.2°C. The coldest month is January with an average water temperature of 73.9°F / 23.3°C.