Hamburg is in the north of Germany. According to Figure 5, what are the characteristics of the climate in northern Germany?

In most areas, the latitude is high, the temperature is low, the climate is humid, and the seasonal distribution of precipitation is relatively uniform.

Hamburg's climate belongs to maritime climate, with small annual and daily changes of temperature, and the occurrence of extreme low temperature is later than that in continental climate areas. The seasonal distribution of annual precipitation is even, with frequent daily precipitation, less water, foggy weather and high humidity. The formation of fog may be caused by climate or industrial pollution. Judging from the annual temperature change, spring is colder than autumn, which is an obvious sign of maritime climate. The warmest month appears in August and is postponed to September at the latest; The coldest month is February every year, and it is postponed to March in high latitudes.