April in Pattaya averages a daily high of 34.3°C with nights around 26°C. Expect roughly 6 wet days totalling 111.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pattaya is December–March.
Based on SATTAHIP, TH (29.9km), 1995–2024. 19 years of April data.