The equatorial location lends Tanzania a temperate climate throughout the year. Seasons are dry, then rainy—the former (January to March and June to September) being the best for game viewing, with fewer mosquitoes and better accessibility on the roads. The rainy season is great for getting deals on accommodations. Some lodges close during the heaviest rains in April and May. The Serengeti's visitation peaks during migration season, when over two million animals travel north from the Serengeti to the Maasai Mara, between June and October. This is high season, and lodges and flights are booked well in advance. Generally, northern circuit parks can be visited year-round, although southern and western circuit parks are best visited during dry season. Tarangire, while on the northern circuit, has much better game viewing during dry season. The coastal areas of Tanzania and Zanzibar are warm any time of the year, making them ideal for beach holidays.