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Porto Velho Weather in September
Thinking of visiting Porto Velho in September? Expect very high temperatures reaching 34°C (93°F) during the day, dropping to 24°C (75°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Porto Velho in September
Expect around 9 days of rain based on historical data, with 105 mm (4.1 in) average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Porto Velho in September
In September, expect very high temperatures in Porto Velho, with highs of 34°C (93°F) and lows of 24°C (75°F) at night. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.September in Porto Velho has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Porto Velho Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
34°C (93°F)
Chance of Rain
31%
Precipitation
105 mm (4.1 in)
Rainy days
9 days
Porto Velho Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Porto Velho - and find the best time to visit.
Best Places in Brazil in September
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Porto Velho in September
Pack for serious heat in Porto Velho in September. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Porto Velho in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Porto Velho 3-Day Forecast
More climate data for Porto Velho
See the full Porto Velho climate overview or explore weather in Brazil.
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Where to go in September - average daytime high across popular destinations.
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