Overview: Knokke-HeistKnokke-Heist (Belgium) is a place with a mild climate. The day temperatures range from 6 °C (43 °F) in January to 21 °C (71 °F) in August. The highest night temperatures could be experienced in July with 15 °C (58 °F), the lowest in February with 2 °C (35 °F). The driest month is April with just 10 days of rain, on the contrary, the month when it rains the most is November with 14 days of rain. Sea temperatures are in the following range: 5 °C (42 °F) in February to 19 °C (66 °F) in August.