The Federated States of Micronesia has a tropical rainforest climate (Köppen: ''Af''). The weather is warm, humid and rainy all year round. The islands are located north of the equator and are affected by constant trade winds, which temper the climate. Minimum temperatures range all year round between 22 and 25°C, and maximum temperatures between 30 and 32°C. The abundant precipitations oscillate between 2500 and 5000 mm per year, although in the faces oriented to the wind they can surpass 6000 mm. Mount Nahnalaud, only 750 m high, on the island of Pohnpei, receives an average of 10,160 mm, being one of the rainiest places on earth, with almost always overcast skies. In general, the rains are produced by showers and storms of short duration but very intense. The driest places are the flat atolls, where rainfall can drop below 3000 mm. The driest months are January and February, with no less than 250 mm and 20 days of rain.