Beaumont's average annual rainfall is roughly 50% higher than North Texas. Here's what that means for gutter sizing, in plain numbers.
A 6-inch K-style gutter holds about 2 gallons of water per linear foot, versus roughly 1.2 gallons per foot for a 5-inch gutter — about 50% more capacity. That difference matters most on larger roofs, steeper pitches, and in heavier-rainfall climates. Beaumont checks all three boxes: average annual rainfall runs 65+ inches, well above the roughly 1,400-sq-ft-roof threshold where larger gutters are typically recommended, and the region sees the kind of high-intensity downpours a 5-inch system can struggle to keep up with even when the annual total looks manageable on paper.
| Factor | Leans 5-inch | Leans 6-inch |
|---|---|---|
| Roof size | Smaller roof, simple gable | 1,400+ sq ft, multiple valleys |
| Roof pitch | Low pitch | Steep pitch (collects more wind-driven rain) |
| Climate | Lower annual rainfall | High-rainfall regions like Beaumont, Seattle, New Orleans |
| Maintenance goal | Lower upfront cost | Lower clog frequency, less overflow risk |
Most Beaumont homes over roughly 1,400 sq ft of roof area, or with steep pitches and multiple roof valleys, come out ahead with 6-inch seamless gutters. Smaller, simpler rooflines can often still perform fine with 5-inch. We measure your specific roof before recommending either.
In a drier market, the 5-inch default is fine for most homes and the 6-inch upgrade is mostly about reducing clog frequency. In Beaumont, the math changes because the input — annual and storm-event rainfall — is roughly 50% higher than a typical North Texas market. That's why we walk through your roof's actual size and pitch rather than defaulting to whatever was standard on the last job.
Sources: capacity figures per LeafFilter's 5" vs 6" gutter comparison. Beaumont rainfall figure per Wikipedia: Climate of Beaumont, Texas.