Overview: BrunswickBrunswick (Germany) is a place with a mild climate. The day temperatures range from 4 °C (39 °F) in January to 24 °C (75 °F) in July. The highest night temperatures could be experienced in July with 13 °C (56 °F), the lowest in February with -1 °C (30 °F). The least rainy month in Brunswick is April with its 10 days of rain, the rainiest month is December, when it rains 15 days.