But at about 4Â°C it reaches a maximum density and then decreases in density as it approaches the freezing point. This decrease in density is only about one part in 10,000 as it cools from 4Â°C to 0Â°C, but this is sufficient to cause the water near freezing to come to the top. The water further expands upon freezing, so that water freezes from the top down, and ice floats on water.
Weather in Germany in April. The average maximum daytime temperature in Germany in April is a cool 13Â°C (55Â°F). There are usually 5 hours of bright sunshine each day, which represents 39% of the 14 hours of daylight. Expect 41mm (1.6 inches) of rainfall across the whole of April with 13 days with some rain falling. Maximum UV levels will be moderate (4 UV index) at midday when the skies are clear. The average night-time temperature is usually a cold 4Â°C (39Â°F). The weather in Germany in April is represented by Berlin.
Spring gets off to a chilly start in Frankfurt-average daily highs in March are 10Â°C with nights still a cold 2Â°C-but it warms up quickly and brings the city's parks and gardens to life.In April you can expect highs of 15Â°C rising to 20 Celsius in May.This is one of the driest seasons in Frankfurt, but spring showers are always a possibility. If you're visiting Frankfurt in the spring, bring layered clothing to take account of changeable temperatures and cool nights.rankfurt in Summer. Summer months in Frankfurt are busy, with many festivals and outdoor events taking place. You can expect warm temperatures in June, July and August, with average daily highs of around 24Â°C and comfortable nights of 14Â°C.