Porto Velho Weather in September

September in Porto Velho brings very high temperatures, with daytime highs of 34°C (93°F) and nights around 24°C (75°F). Quite a bit of rainfall is expected, around 119 mm (4.7 in), so pack an umbrella.

Rainfall in Porto Velho in September

Past climate data indicates that roughly 9 days will see rain, totalling around 119 mm (4.7 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Porto Velho in September

Temperatures in Porto Velho in September top out at 34°C (93°F) and drop to 24°C (75°F) overnight. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in Porto Velho in September

With about 183 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Porto Velho. Our weather planner can help you explore destinations with more pleasant weather conditions.