This report describes the typical weather at the Nassau Lynden Pindling International Airport (Nassau, The Bahamas) weather station over the course of an average December. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Nassau has a tropical savanna climate with dry winters. The area within 25 mi of this station is covered by oceans and seas (95%) and croplands (4%).
The month of December is characterized by gradually falling daily high temperatures, with daily highs around 79°F throughout the month, exceeding 84°F or dropping below 73°F only one day in ten.
Over the course of December, the length of the day is essentially constant. The shortest day of the month is December 21 with 10:35 hours of daylight; the longest day is December 2 with 10:41 hours of daylight.
The earliest sunrise is at 6:38am on December 1; the latest sunset is at 5:31pm on December 31; the latest sunrise is at 6:55am on December 31; the earliest sunset is at 5:20pm on December 4.
Daylight savings time is observed in 2012 but it neither starts nor ends in December, so the entire month is in standard time.
The median cloud cover is 45% (partly cloudy) and does not vary substantially over the course of the month.
On December 16, a representative day, the sky is clear or mostly clear 39% of the time, partly cloudy 28% of the time, and mostly cloudy or overcast 20% of the time.
The average probability that some form of precipitation will be observed in a given day is 33%, with little variation over the course of the month.
Throughout December, the most common forms of precipitation are moderate rain and light rain.
Moderate rain is the most severe precipitation observed during 70% of those days with precipitation. It is most likely around December 1, when it is observed during 24% of all days.
Light rain is the most severe precipitation observed during 23% of those days with precipitation. It is most likely around December 1, when it is observed during 8% of all days.
Either snow is exceptionally unlikely to fall at this location in December or this station does not reliably report precipitation types.
The relative humidity typically ranges from 59% (mildly humid) to 92% (very humid) over the course of a typical December, rarely dropping below 47% (comfortable) and reaching as high as 100% (very humid).
The air is driest around December 12, at which time the relative humidity drops below 65% (mildly humid) three days out of four; it is most humid around December 30, rising above 89% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical December, the dew point typically varies from 59°F (comfortable) to 70°F (muggy) and is rarely below 49°F (dry) or above 75°F (very muggy).
Over the course of December typical wind speeds vary from 2 mph to 15 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around December 4, at which time the average daily maximum wind speed is 15 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around December 22, at which time the average daily maximum wind speed is 15 mph (moderate breeze).