This report describes the typical weather at the Berlin Brandenburg International Airport (Berlin, Germany) weather station over the course of an average May. 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 May is characterized by rising daily high temperatures, with daily highs ranging from 66°F to 71°F over the course of the month, exceeding 81°F or dropping below 56°F only one day in ten.
Over the course of May, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:29 hours, implying an average day-over-day increase of 2.9 minutes.
The shortest day of the month is May 1 with 14:59 hours of daylight; the longest day is May 31 with 16:27 hours of daylight.
The earliest sunrise is at 4:50am on May 31; the latest sunset is at 9:17pm on May 31; the latest sunrise is at 5:34am on May 1; the earliest sunset is at 8:33pm on May 1.
Daylight saving time is observed in 2012 but it neither starts nor ends in May, so the entire month is in daylight time.
The median cloud cover is 82% (mostly cloudy) and does not vary substantially over the course of the month.
On May 16, a representative day, the sky is clear or mostly clear 4% of the time, partly cloudy 8% of the time, and mostly cloudy or overcast 31% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around May 31, occurring in 57% of days. Precipitation is least likely around May 13, occurring in 51% of days.
Throughout May, the most common forms of precipitation are light rain, moderate rain, and thunderstorms.
Light rain is the most severe precipitation observed during 46% of those days with precipitation. It is most likely around May 5, when it is observed during 26% of all days.
Moderate rain is the most severe precipitation observed during 28% of those days with precipitation. It is most likely around May 2, when it is observed during 16% of all days.
Thunderstorms are the most severe precipitation observed during 19% of those days with precipitation. They are most likely around May 31, when it is observed during 13% of all days.
Either snow is exceptionally unlikely to fall at this location in May or this station does not reliably report precipitation types.
The relative humidity typically ranges from 39% (comfortable) to 91% (very humid) over the course of a typical May, rarely dropping below 25% (dry) and reaching as high as 99% (very humid).
The air is driest around May 1, at which time the relative humidity drops below 47% (comfortable) three days out of four; it is most humid around May 13, 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 May, the dew point typically varies from 36°F (dry) to 54°F (very comfortable) and is rarely below 30°F (dry) or above 61°F (comfortable).
Over the course of May typical wind speeds vary from 3 mph to 15 mph (light air to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around May 25, at which time the average daily maximum wind speed is 15 mph (moderate breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around May 3, at which time the average daily maximum wind speed is 13 mph (moderate breeze).