Map from Google - Berlin

In Berlin, capital of Germany, the climate is moderately continental, with cold winters, in which the average temperatures are around freezing (0 °C or 32 °F), and moderately warm summers, when daytime temperatures hover around 24 °C (75 °F).
Here are the average temperatures.
Average temperatures - Berlin
Min (°C)-2-214912141411620
Max (°C)3491319222424191374
Min (°F)282834394854575752433632
Max (°F)373948556672757566554539

The city is exposed to both cold and warm air masses, so both the weather and the temperature are highly variable. During the warm season, from May to August, afternoon thunderstorms are possible.
Precipitation amounts to 570 millimetres (22.5 inches) per year, therefore it's not particularly abundant, but it's well distributed throughout the year.
Here is the average precipitation.
Average precipitation - Berlin
Prec. (mm)403540355570556045354555570
Prec. (in)

Winter, from December to February, is cold, with average temperatures hovering around freezing. Actually, during winter, different situations may occur.
There may be relatively mild periods, in which Atlantic currents prevail, it can rain and the temperatures can exceed 10 °C (50 °F); in these cases, however, wind and humidity can increase the feeling of cold.
Then, there are situations in which an high pressure system dominates, and the weather is cold and gray, with night frosts and daytime temperatures around freezing, or even a little below. later, when the westerlies start to blow again, flowing above the layer of cold air, they can bring snow, sleet, rain mixed with snow or rain that freezes.
At other times, cold air masses of Siberian origin, may cause snowfall and frost, sometimes intense. In the past, once every few years it happened that the temperature remained below freezing for an entire month; in recent years it has become more rare, however, sometimes waves of frost still occur, which may last for weeks, and in which the temperature can drop to -20 °C (-4 °F).

Spring, from March to May, is a season characterized by an unstable weather, in which the first warm days alternate with the return of cold weather. March is often still a cold month, with frequent snowfalls. Cold periods are still possible in April, with late snowfalls, especially in the first half of the month, but also the first mild days, in which the temperature can reach 20 °C (68 °F), especially in the second half of the month. In early May, it can still get cold; with the passing of days the first warm days occur, when the temperature can reach 25 °C (77 °F), and the first afternoon thunderstorms can break out.

Summer, from June to August, is pleasantly warm: daytime temperatures hover around 22 °C (72 °F) in June and 24 °C (75 °F) in July and August. However, nights are cool, and sometimes even a little cold. Atlantic depressions can arrive even in this season, bringing some cool and rainy days, while in periods of good weather the temperatures can get close to 30 °C (86 °F). There is some variability from year to year: there may summers characterized by long warm and sunny periods, and others in which cool and rainy weather is more frequent. However, some hot days, with highs around 28/30 °C (82/86 °F), occur almost every year; occasionally there may be even waves of intense heat, with highs about 36/38 °C (97/100 °F), but usually they only last a day or two.
On sunny days, thunderstorms can break out in the afternoon.

In autumn, from September to November, the flow of Atlantic fronts, which had never completely stopped, resumes with greater frequency, although sometimes a period of good and unseasonably warm weather can occur, a sort of Indian summer, called Altweibersommer, in September and sometimes in October. Usually, September is still an acceptable month; cold and gray weather usually arrives in the second half of October or more likely in November, when the first snowfalls are also possible.

The amount of sunshine in Berlin is never great, however it is passable from May to August, when the days are also very long; there are about eight hours of sunshine per day from May to July, and 7 in August. From November to February, the sun rarely shines and the days are short.

As happens in the big cities, in Berlin there is an urban heat island, in which the temperatures are higher, typically by one or two degrees Celsius, compared with the surrounding countryside, especially at night and in winter.


When to go

The best time to visit Berlin runs from mid-May to late September. In September, the days are shorter than in the previous months, but the weather is generally pleasant and crisp. However, even in summer it's better to bring some heavier clothes, like a sweatshirt or sweater, and a light jacket for cooler evenings. It may be useful also to bring an umbrella or a raincoat, for rains and thunderstorms.