Weather will likely play an important role when you plan your trip to Pohnpei, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually September and October, with an average temperature of 28°C, while the coldest months are March and July, with an average of 28°C. The rainiest months in Pohnpei are May, July, November and June, with each month seeing an average of 406 mm of rainfall.