Weather in Brasília in October

Shoulder season. October sits in between. You will get good days and you will lose some. You should expect rain on 17 days of the month, which is more days wet than dry.

October ranks 12 of 12 — near the bottom of Brasília's year. June is the month that works, and the swing between the two is 48 points, which is a different holiday rather than a slightly better one.

Rain on 17 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 30.9 °C days and 18.4 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 5 days clear 35 °C, so a serious heatwave is normal rather than notable. Across the twenty years measured, the hottest October day reached 39 °C and the coldest night fell to 13.1 °C, and the wettest single day dropped 48 mm — roughly 42% of the month's rain in one day.

October is moderately variable: 32 mm in the driest year against 317 mm in the wettest, around an average of 113 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.

Wind is light at 7.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 57%.

How October sits in the year

Temperatures hold steady either side: 31.8 °C in September, 30.9 here, 27.5 in November. Nothing about the timing within the month matters much. Rain is the thing that moves: November brings 8 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in October

Brasília sits close enough to the equator that daylight barely moves all year — 12.4 hours in October, against a range of just 1.9 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 19.3 °C between the year's warmest afternoons and coldest nights. At 1136 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Brasília versus nearby

If Brasília is one option among several, the nearby comparison is worth making. Goiânia is the weaker option in October — 2.1 °C warmer, the same number of rain days. Belo Horizonte is a better bet in October — within a degree on temperature, 4 days less rain.

So: October is a compromise. June is 48 points better and is what Brasília is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Brasília

See all twelve months in Brasília, or where else to go in October.