Question 1

When is the dry season in Brasília?

Accepted Answer

Brasília's dry season runs from May through August, and 2025 showed just how striking it is — these four months together saw only 14.5mm (0.57 in) of rain.

The driest month of 2025 was May, with a near-total drought of just 1.0mm (0.04 in) of precipitation. Humidity fell sharply as the season progressed, averaging 54% across the period and bottoming out at 39% in August — dry enough to be felt on the skin. Sunshine was abundant, with both July and August delivering over 300 hours each (302.8 and 304.0 hours respectively).

Temperatures during Brasília's dry season stayed pleasant, with daytime highs averaging around 29°C (85°F). Nights were noticeably cooler thanks to the city's 1,123m elevation, dipping to 11.7°C (53°F) in June.

The contrast with the wet season is dramatic: January 2025 alone brought 386.8mm (15.2 in) of rain — more than 25 times the entire May–August total. For visitors, this makes the dry season the most reliable window for outdoor plans in Brasília, offering sunny skies and minimal rainfall, though the low humidity means staying hydrated and using moisturizer is wise. Just pack a light layer for the cool evenings.

Question 2

What were the temperature extremes in Brasília in 2025?

Accepted Answer

Brasília's temperature extremes in 2025 ranged from a peak of **33.9°C (93.0°F)** down to a low of **11.7°C (53.1°F)**, giving the city an annual swing of about 22.2°C (40.0°F).

The hottest day in Brasília fell on 9 September 2025, when the daytime high reached 33.9°C (93.0°F). The coldest moment came on the morning of 15 June 2025, when temperatures dipped to 11.7°C (53.1°F). Across the full 2025 calendar year, Brasília averaged a mild 22.0°C (71.6°F), with typical daytime highs near 27.4°C (81.3°F) and overnight lows around 17.3°C (63.1°F).

True extremes were uncommon in 2025. Only 7 days climbed to 33°C (91°F) or hotter, and just 11 nights cooled to 13°C (55°F) or below. The warmest readings clustered in late August through October, while the chilliest nights occurred in June and July, when drier air allowed temperatures to fall further after sunset.

For visitors, this means Brasília offers a remarkably steady, temperate climate year-round. Even on its hottest 2025 days, temperatures stayed below 34°C (93°F), and the cool nights make for comfortable sleeping. Light layers are useful for the brief cold snaps in mid-year, but overall the city's 1,123 m (3,684 ft) elevation keeps Brasília free from the extreme heat seen at lower altitudes in central Brazil.

Question 3

How much total rainfall did Brasília receive in 2025?

Accepted Answer

Brasília received approximately **1,499.6 mm (59.0 inches)** of total rainfall across 2025, with precipitation heavily concentrated in the warmer months from October through March.

The wettest month by far was January 2025, which alone delivered 386.8 mm (15.2 in) of rain. It was followed by November with 322.7 mm (12.7 in) and December with 315.6 mm (12.4 in) — three months that each topped 300 mm. Together, the wet-season half of the year (October to March) accounted for roughly 1,315.9 mm, or about 88% of Brasília's annual rainfall.

By contrast, the cooler middle of the year was strikingly dry. From April through September, the city recorded just 183.7 mm combined, with May (1.0 mm), June (3.3 mm), and August (1.4 mm) seeing almost no rain at all. This sharp split is typical of Brasília's tropical savanna climate, where moisture arrives in intense seasonal bursts rather than spreading evenly through the year.

For visitors and residents, the practical takeaway is clear: if you want to avoid heavy downpours, the dry winter months of May to August are ideal, while anyone traveling to Brasília between November and January in 2025 would have encountered frequent, often heavy, afternoon rainfall. Planning outdoor events, hiking, or sightseeing around this wet-and-dry rhythm makes a real difference to the experience.

Question 4

Which months are the sunniest in Brasília?

Accepted Answer

Brasília's sunniest months are July and August, the heart of the dry season, when the city recorded just over 300 hours of sunshine each in 2025. August was the single brightest month of the year with 304.0 hours of sunshine, narrowly ahead of July's 302.8 hours.

Across 2025, Brasília's three brightest months formed a clear winter cluster (the meteorological winter runs June to August):

- **August:** 304.0 hours (about 9.8 hours of sun per day)
- **July:** 302.8 hours (about 9.8 hours per day)
- **June:** 288.0 hours (about 9.6 hours per day)

These bright spells line up with extremely dry conditions. August saw only 1.4 mm (0.06 in) of rain, and the warm afternoons averaged 22.1°C (71.8°F), making for reliably clear skies. Over the full year, Brasília totalled 3,150 hours of sunshine, an average of roughly 263 hours per month.

The cloudiest stretch falls in the wet season at the turn of the year. January was the dullest month with 228.4 hours of sunshine, paired with a soaking 386.8 mm (15.2 in) of rain, and December was similar at 228.9 hours.

For visitors, this means the June-to-September window offers Brasília's most dependable sunshine for sightseeing and outdoor activities, while December and January bring shorter sunny spells broken up by frequent afternoon storms.

Question 5

When is the most humid time of year in Brasília?

Accepted Answer

The most humid time of year in Brasília is the wet season around December and January, when monthly average relative humidity climbs above 79%. January 2025 was the single most humid month, averaging 81.7% humidity.

Brasília's humidity tracks closely with its rainy season. In 2025, the wettest, muggiest stretch ran from November through January, with average humidity of about 76.9% across November (70.0%), December (79.1%), and January (81.7%). This coincided with heavy rainfall, including 386.8 mm (15.2 in) in January and 315.6 mm (12.4 in) in December.

The contrast with Brasília's dry season is striking. The least humid month of 2025 was August at just 39.2%, and the June–August period averaged only 49.0% humidity. August received a mere 1.4 mm (0.06 in) of rain, leaving the air notably dry. Across the full year, Brasília averaged 63.3% relative humidity.

For visitors, this means the December–January window brings warm, sticky, rain-prone conditions ideal for green landscapes but less comfortable for long outdoor activity. If you prefer drier, crisper air, the months from June to August in Brasília offer the lowest humidity of the year, though they come with very dusty, parched conditions. Planning around these 2025 humidity patterns helps set realistic expectations for comfort and outdoor plans in Brasília.

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FAQ

When is the dry season in Brasília?

What were the temperature extremes in Brasília in 2025?

How much total rainfall did Brasília receive in 2025?

Which months are the sunniest in Brasília?

When is the most humid time of year in Brasília?