Rio Weather in September

September is one of the excellent months to visit Rio, with daytime temperatures of 27°C (81°F) and lows of 17°C (63°F) at night. Some rainfall is typical for this time of year.

Rainfall in Rio in September

Typically, about 4 days will experience rainfall, with an average of 56 mm (2.2 in) for the month. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.

Temperature in Rio in September

Rio has excellent weather in September, with days reaching 27°C (81°F) and nights cooling to 17°C (63°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Rio in September

Enjoy a sunny month with about 281 hours of sunshine, the clear skies make Rio even more beautiful.

Wind Speed in Rio in September

Wind speeds average 1 m/s (2 knots) during September. At this speed, you'll experience mostly light air movement that's just barely noticeable. As an average, some days will be completely calm while others have gentle breezes you can feel on your skin.

Average water temperature in September

The water is 23°C (73°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Rio.