The best time to visit Portland, Texas, is during the spring (March to May) and autumn (September to November) months.These periods offer pleasant weather, with moderate temperatures and less humidity, making it ideal for outdoor activities like exploring the coastline or visiting the nearby wildlife refuges. You'll find comfortable conditions for fishing, kayaking, or simply enjoying the beaches without the intense heat of summer.For those planning to spend time on the water, whether fishing or sailing, the calmer conditions and agreeable temperatures of spring and autumn are particularly inviting. The fishing is often excellent during these transitional seasons, with various species active in the bays and Gulf.While summer (June to August) is also popular, especially for families enjoying school holidays, it brings higher temperatures and humidity, which can be quite intense.