Nicaragua has two seasons: dry (November to April) and wet (May to October). The dry season is the most popular time to visit — clear skies, manageable heat, and good conditions for hiking volcanoes, visiting crater lakes, and getting around on unpaved roads. January and February are the peak of the season, with reliable sunshine across the country.
The rainy season doesn't mean constant rain. Most days see a few hours of afternoon or evening downpours followed by sunshine. The landscape turns vivid green, prices drop, crowds thin out, and surf on the Pacific coast picks up significantly. Many travelers find May through July a good compromise: occasional rain but not the heaviest.
September and October bring the most intense rains and are worth avoiding, particularly if you're planning to travel to rural areas, the Caribbean coast, or Ometepe — roads flood, ferries get cancelled, and conditions in the eastern lowlands can become difficult.
The Caribbean coast (including the Corn Islands) operates on a slightly different weather pattern, with more rain during the dry season on the Pacific side. Plan the Corn Islands for February to May or September to October for calmer seas.
High season (December to April) means higher accommodation prices, fuller guesthouses in Granada and San Juan del Sur, and a livelier social scene. Around Semana Santa (Holy Week, the week before Easter), San Juan del Sur draws large crowds and the beach turns into a party — energetic and noisy. If you want quiet, avoid the Pacific coast that week.
The harvest season for coffee in the highlands around Matagalpa and Jinotega runs roughly November to February, which is a good time to visit if you want to see the fincas in operation.