Galveston Weather in September

Galveston in September averages 31°C (88°F) during the day and 25°C (77°F) at night. This is the wettest month of the year.

Rainfall in Galveston in September

Prepare for the heaviest rain of the year this month, which often comes in heavy showers. A poncho is a smart choice to stay dry. The climate data from previous years indicates about 13 days of rain, averaging 158 mm (6.2 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Galveston in September

In September, Galveston sees very high temperatures, with highs of 31°C (88°F). Nights drop to around 25°C (77°F). Mornings and evenings are often more comfortable than the peak afternoon hours. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Galveston in September

The days are predominantly sunny, with an estimated total of around 239 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If you prefer enjoying temperate temperatures and rain-free days, March, April, May and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.