This report describes the typical weather at the Cozumel International Airport (Cozumel, Mexico) weather station over the course of an average March. It is based on the historical records from 1991 to 2012. Earlier records are either unavailable or unreliable.
Cozumel has a tropical monsoon climate with short dry season. The area within 25 mi of this station is covered by oceans and seas (69%) and forests (30%).
The month of March is characterized by gradually rising daily high temperatures, with daily highs around 84°F throughout the month, exceeding 89°F or dropping below 78°F only one day in ten.
Over the course of March, the length of the day is gradually increasing. The shortest day of the month is March 1 with 11:46 hours of daylight; the longest day is March 31 with 12:20 hours of daylight.
The earliest sunrise is at 5:42am on March 31; the latest sunset is at 6:02pm on March 31; the latest sunrise is at 6:07am on March 1; the earliest sunset is at 5:53pm on March 2.
Daylight saving time is observed in 2012 but it neither starts nor ends in March, so the entire month is in standard time.
The median cloud cover is 50% (partly cloudy) and does not vary substantially over the course of the month.
On March 16, a representative day, the sky is clear or mostly clear 13% of the time, partly cloudy 22% of the time, and mostly cloudy or overcast 16% of the time.
The average probability that some form of precipitation will be observed in a given day is 12%, with little variation over the course of the month.
Throughout March, the most common forms of precipitation are light rain, moderate rain, and drizzle.
Light rain is the most severe precipitation observed during 56% of those days with precipitation. It is most likely around March 31, when it is observed during 7% of all days.
Moderate rain is the most severe precipitation observed during 21% of those days with precipitation. It is most likely around March 1, when it is observed during 3% of all days.
Drizzle is the most severe precipitation observed during 11% of those days with precipitation. It is most likely around March 30, when it is observed during 2% of all days.
Either snow is exceptionally unlikely to fall at this location in March or this station does not reliably report precipitation types.
The relative humidity typically ranges from 58% (mildly humid) to 90% (very humid) over the course of a typical March, rarely dropping below 48% (comfortable) and reaching as high as 99% (very humid).
The air is driest around March 13, at which time the relative humidity drops below 64% (mildly humid) three days out of four; it is most humid around March 1, rising above 84% (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 March, the dew point typically varies from 65°F (mildy humid) to 73°F (very muggy) and is rarely below 57°F (comfortable) or above 76°F (oppressive).
Over the course of March typical wind speeds vary from 0 mph to 17 mph (calm to moderate breeze), rarely exceeding 25 mph (strong breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around March 8, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around March 30, at which time the average daily maximum wind speed is 17 mph (moderate breeze).