Sri Lanka has two monsoon seasons, so it's essential to consider the weather when planning your honeymoon. The best time to visit the west and south coasts, including popular destinations like Bentota and Galle, is from December to April. The east coast, including Trincomalee and Arugam Bay, is ideal to visit from April to September. The central highlands, such as Nuwara Eliya and Ella, have a cooler climate year-round but can experience rainfall at any time.