Port Isabel Weather in September

Port Isabel in September sees very high daytime temperatures of 32°C (90°F) and nighttime lows of 25°C (77°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Port Isabel in September

With the year's heaviest rain occurring this month, it's best to be equipped with a poncho to handle the frequent downpours. Expect around 14 days of rain based on historical data, with 171 mm (6.7 in) average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Port Isabel in September

September in Port Isabel brings typical temperatures with highs around 32°C (90°F) and lows of 25°C (77°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Port Isabel in September

Enjoy a sunny month with about 246 hours of sunshine, the clear skies make Port Isabel even more beautiful.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Port Isabel. Our weather planner can help you explore destinations with more pleasant weather conditions.