Belgium generally has a temperate climate, with winters that are not excessively cold and with cool, rainy summers. The climate near the sea is humid and mild. Farther inland, away from the moderating maritime influences, a marked increase in the range of temperature occurs. In the Ardennes highlands hot summers alternate with cold winters. Heavy rains are confined almost exclusively to the highlands. Fog and drizzle are common, and April and November are particularly rainy months.