This report describes the typical weather at the Palm Beach International Airport (West Palm Beach, Florida, United States) weather station over the course of an average April. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
West Palm Beach, Florida has a tropical rainforest climate with no dry season. The area within 25 mi of this station is covered by oceans and seas (39%), croplands (37%), grasslands (12%), forests (5%), and built-up areas (4%).
The month of April is characterized by gradually rising daily high temperatures, with daily highs around 82°F throughout the month, exceeding 88°F or dropping below 75°F only one day in ten.
Over the course of April, the length of the day is gradually increasing. The shortest day of the month is April 1 with 12:27 hours of daylight; the longest day is April 30 with 13:10 hours of daylight.
The earliest sunrise is at 6:42am on April 30; the latest sunset is at 7:53pm on April 30; the latest sunrise is at 7:11am on April 1; the earliest sunset is at 7:38pm on April 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in April, so the entire month is in daylight time.
The median cloud cover is 47% (partly cloudy) and does not vary substantially over the course of the month.
On April 15, a representative day, the sky is clear or mostly clear 41% of the time, partly cloudy 28% of the time, and mostly cloudy or overcast 30% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around April 30, occurring in 35% of days. Precipitation is least likely around April 12, occurring in 30% of days.
Throughout April, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 38% of those days with precipitation. They are most likely around April 30, when it is observed during 17% of all days.
Light rain is the most severe precipitation observed during 35% of those days with precipitation. It is most likely around April 6, when it is observed during 12% of all days.
Moderate rain is the most severe precipitation observed during 20% of those days with precipitation. It is most likely around April 1, when it is observed during 7% of all days.
Either snow is exceptionally unlikely to fall at this location in April or this station does not reliably report precipitation types.
The relative humidity typically ranges from 50% (mildly humid) to 88% (very humid) over the course of a typical April, rarely dropping below 36% (comfortable) and reaching as high as 100% (very humid).
The air is driest around April 12, at which time the relative humidity drops below 58% (mildly humid) three days out of four; it is most humid around April 7, rising above 82% (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 April, the dew point typically varies from 57°F (comfortable) to 68°F (muggy) and is rarely below 46°F (dry) or above 74°F (very muggy).
Over the course of April typical wind speeds vary from 3 mph to 18 mph (light breeze to fresh breeze), rarely exceeding 23 mph (fresh breeze).
The highest average wind speed of 11 mph (gentle breeze) occurs around April 2, at which time the average daily maximum wind speed is 18 mph (moderate breeze).
The lowest average wind speed of 11 mph (gentle breeze) occurs around April 29, at which time the average daily maximum wind speed is 17 mph (moderate breeze).