April in Port Arthur averages a daily high of 26°C with nights around 15.4°C. Expect roughly 7 wet days totalling 92.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Port Arthur is February–April.
Based on PORT ARTHUR SE TX REGIONAL AIRPORT, TX US (11km), 1995–2024. 30 years of April data.