Port Arthur

What is the climate like in Port Arthur?

The best time to visit Port Arthur is typically October – November, with trip comfort peaking in October (6.9/10). Port Arthur is warmest in August, when daily highs average 90°F (32°C), and coolest in January, when lows fall to about 47°F (8°C). The wettest month is typically August and the driest is February; the year sees roughly 62 in (1564 mm) of precipitation.

• Best time to visitOctober – November — comfort peaks in October (6.9/10)
• Warmest monthAugust — average high 90°F (32°C)
• Coolest monthJanuary — average low 47°F (8°C)
• Wettest monthAugust (7.2 in (183 mm))
• Driest monthFebruary (3.0 in (77 mm))
• Annual precipitation62 in (1564 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromPort Arthur Se Tx Rgnl AP, 11 km away (1947-2026)