Tropical rainforests are a type of [[tropical climate]] in which there is no [[dry season]] – all months have an average [[precipitation (meteorology)|precipitation]] value of at least 60 mm. Tropical rainforest climates have no pronounced summer or winter; it is typically hot and wet throughout the year and rainfall is both heavy and frequent. One day in an equatorial climate can be very similar to the next, while the change in temperature between day and night may be larger than the average change in temperature along the year.