This report describes the typical weather at the Berlin Brandenburg International Airport (Berlin, Germany) weather station over the course of an average April. It is based on the historical records from 2006 to 2012. Earlier records are either unavailable or unreliable.
Berlin has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (78%), built-up areas (13%), grasslands (5%), and lakes and rivers (3%).
The month of April is characterized by rapidly rising daily high temperatures, with daily highs increasing from 55°F to 65°F over the course of the month, exceeding 74°F or dropping below 46°F only one day in ten.
Over the course of April, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1:55 hours, implying an average day-over-day increase of 3.8 minutes.
The shortest day of the month is April 1 with 13:00 hours of daylight; the longest day is April 30 with 14:56 hours of daylight.
The earliest sunrise is at 5:36am on April 30; the latest sunset is at 8:32pm on April 30; the latest sunrise is at 6:40am on April 1; the earliest sunset is at 7:40pm on April 1.
Daylight saving 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 84% (mostly 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 4% of the time, partly cloudy 7% of the time, and mostly cloudy or overcast 35% of the time.
The average probability that some form of precipitation will be observed in a given day is 51%, with little variation over the course of the month.
Throughout April, the most common forms of precipitation are light rain and moderate rain.
Light rain is the most severe precipitation observed during 48% of those days with precipitation. It is most likely around April 27, when it is observed during 26% of all days.
Moderate rain is the most severe precipitation observed during 32% of those days with precipitation. It is most likely around April 1, when it is observed during 17% of all days.
The likelihood of snow falling is highest around April 1, occurring in 6% of days.
Either snow rarely accumulates at this location in April or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 39% (comfortable) to 92% (very humid) over the course of a typical April, rarely dropping below 25% (dry) and reaching as high as 99% (very humid).
The air is driest around April 26, at which time the relative humidity drops below 45% (comfortable) three days out of four; it is most humid around April 3, rising above 88% (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 April, the dew point typically varies from 31°F (dry) to 46°F (dry) and is rarely below 24°F (dry) or above 52°F (very comfortable).
Over the course of April typical wind speeds vary from 3 mph to 16 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around April 3, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around April 28, at which time the average daily maximum wind speed is 13 mph (moderate breeze).