April in Kollam averages a daily high of 33.9°C with nights around 25.4°C. Expect roughly 6 wet days totalling 45.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kollam is December–February.
Based on THIRUVANANTHAPURAM, IN (59.8km), 1995–2024. 26 years of April data.