Berlin's weather is at its warmest from May through September and this is the best time to visit this interesting city. This is the most popular time to visit Berlin because schools have breaks and families visit the city. Hotel rates are also higher, but summer means pleasant walks to attractions, sitting at outdoor cafes, and relaxing in parks. There are often warm sunny days in September and early October: this is also a good time to visit Berlin because the crowds have left and hotel rates go down. Winter can be extremely cold, but you will find the best hotel rates during this time of the year.
January is the coldest month in Berlin with an average low temperature of 27°F (-3°C). Days are not much warmer as the average high temperature peaks at 36°F (2°C).
In February the temperatures rise by a few degrees as the average high temperature increases to 39°F (4°C). The average low temperature increases by one degree to 28°F (-2°C). Meanwhile, February is the driest month of the year in Berlin with rainfall averaging 34 mm.
Berlin Weather in March: Spring comes to Berlin in March and brings with it higher temperatures. The high temperature average is 46°F (8°C) and the low temperature average is 32°F (0°C).
In April, visitors can look forward to sunnier days as this month averages about 9 hours of sunlight per day. The average high temperature increases again to 55°F (13°C). Low temperatures peak at an average of 39°F (4°C).
May continues the upward trend in temperature with the average high temperature increasing to 66°F (19°C). Similarly, the average low temperature increases to 46°F (8°C).
Berlin Weather in June: The summer season starts in June and brings along with it the highest precipitation rate of the year, 71 mm, and the most sunlight of the year, 11 hours of sunshine per day. The average high temperature increases to 72°F (22°C) while the average low temperature increases by nearly 10 degrees to 54°F (12°C).
July is one of the two warmest months in the year with an average high temperature and average low temperature of 73°F (23°C) and 55°F (13°C) respectively.
In August, the high and low temperatures remain exactly the same, tying it with July for the hottest months of the year.
Berlin Weather in September: Things start to cool off in September with the average high temperature decreasing to 66°F (19°C) and the average low temperature going down to 50°F (10°C).
October is one of the drier months of the year with rainfall averaging at 36 mm. Meanwhile, the weather continues its downward trend with 55°F (13°C) for the average high temperature and 43°F (6°C) for the average low temperature.
In November, the climate continues to get colder and colder. The average high temperature and average low temperature create a range of 45°F (7°C) and 36°F (2°C).
Berlin Weather in December: The second coldest month of the year is December as the average high temperature decreases to 37°F (3°C) and the average low temperature drops to 30°F (-1°C).
If you’re looking to catch some of the biggest tourist events in Berlin, there’s no doubt that the best time to visit is between May through September. This is the time that most of the city’s big events take place such as Fete de la Musique, the Formula E Championships and the International Berlin Beer Festival. For outdoor activities, the best time to visit Berlin is in April or September when the weather is temperate. Verified Resource: The Weather Channel