Rio de Janeiro · October
Run in the morning.
Comfortable average high of 81°F, dipping to 69°F at night. Humidity averages 80% — the limiting factor on most runs. Expect 18 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
81° / 69°F
Humidity
80%
Rain days
18/mo
Wind
11 mph
What October feels like in Rio de Janeiro
Sunrise
05:19
Mid-month average
Sunset
17:57
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Rio de Janeiro in October
The kit for October in Rio de Janeiro: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
October vs the surrounding months
vs September
+1° avg high
+5 rain days
Rio de Janeiro in September →
October
81°F avg high
18 rain days
Best: morning
vs November
0° avg high
-1 rain days
Rio de Janeiro in November →
Frequently Asked Questions
What is the best time of day to run in Rio de Janeiro in October?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Rio de Janeiro in October?+
Average high 81°F, average low 69°F.
How does October compare to surrounding months in Rio de Janeiro?+
Compared to September (avg high 80°F), October is warmer. Compared to November (avg high 81°F), October is warmer.
Does it rain often in Rio de Janeiro in October?+
Expect about 18 measurable rain days in October, on average.