The best time to visit Nosara, Guanacaste, Costa Rica, for optimal weather and conditions is generally during the dry season, which runs from December to April.During these months, you'll experience ample sunshine and minimal rainfall, making it ideal for enjoying the beaches, outdoor activities, and wildlife. The Pacific ocean is typically calmer, which is superb for swimming, snorkelling, and surfing if you're just learning. The clear skies also make for excellent stargazing in the evenings.For those looking to avoid larger crowds and potentially find better value on accommodation, the shoulder months of May and November can also be a good choice. While these months mark the transition between the dry and green season, you can still expect plenty of sunny days with occasional short rain showers that often clear quickly, leaving everything looking refreshed and green.