Rio Branco weather and climate in 2024
Day
30 °C
Night
20 °C
Sea
0 °C
Precipitation
103 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
5 hours
average
Humidity
86 %
Day
30 °C
Night
20 °C
Sea
0 °C
Precipitation
103 mm
in month
Rainy days
13 days
in month
Daylight
12 hours
average
Sunshine
5 hours
average
Humidity
86 %
Overview: Rio Branco
Weather charts for Rio Branco
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Weather overview for Rio Branco
Weather overview
Rio Branco, with its close proximity to the equator, experiences a tropical climate with substantial rainfall throughout the year. Known for its hot and wet weather, daytime temperatures hover between 30 °C (86 °F) in January to 32 °C (89 °F) in September, reaching their peak just before the onset of the rainy season. The presence of rain is felt throughout the year, with the highest precipitation recorded in February at 237 mm (9.34 in) and the lowest in July at 61 mm (2.39 in). Despite high humidity levels, Rio Branco does not typically encounter extreme wind conditions, with wind speeds gently fluctuating around 1 m/s. The nights are slightly cooler with temperatures that gently decline during the mid-year months.
January weather
January in Rio Branco heralds the heart of the wet season with consistent rains almost daily. Daytime temperatures reach 30 °C (86 °F), providing warmth amidst the dampness. The night offers little respite, as the temperature merely dips to an average of 22 °C (72 °F). Rains drench the city with an average of 220 mm (8.65 in) for the month, making umbrella a constant companion.
February weather
Moving into February, the deluge continues in Rio Branco, with the sky opening frequently to pour down an impressive 237 mm (9.34 in) of rainfall over the course of 23. Days are warm with a high of 30 °C (86 °F), but the nights provide a cooler atmosphere at 22 °C (71 °F).
March weather
March sees Rio Branco still under the influence of the rainy season, albeit with a minuscule decrease in rainfall to 226 mm (8.88 in). The days continue to be warm with an average max of 30 °C (86 °F), and nights are comfortably cool at 22 °C (72 °F). The high humidity could make the warmth feel more intense than the thermometer suggests.
April weather
April in Rio Branco marks the gradual transition out of the wettest season, although showers remain common, sprinkling across 20. Daytime temperatures are much the same, toasty at around 31 °C (87 °F), while nighttime brings cooler air with temperatures averaging 21 °C (70 °F).
May weather
May brings a noticeable decrease in rainfall to Rio Branco with an average of 103 mm (4.05 in), spread across about 13. Temperatures remain steady with a high of 30 °C (86 °F), providing the opportunity for slightly drier ventures outdoors. Nighttime lows average at a cooler 20 °C (67 °F).
June weather
June ushers in the driest season in Rio Branco, with rainfall diminishing to 72 mm (2.83 in). Slightly cooler temperatures are a hallmark of the month, peaking at 30 °C (86 °F), while nights cool down to an average low of 18 °C (64 °F). Daytime outings are more pleasant without the omnipresent humidity and rains of previous months.
July weather
July offers the lowest rainfall of the year for Rio Branco at just 61 mm (2.39 in), and the number of rainy days drops significantly to about 5. Despite this dry spell, the days remain warm at 31 °C (87 °F), and the cooling night air settles to an average of 17 °C (63 °F).
August weather
As August arrives, Rio Branco sees a gradual return of rainfall with 82 mm (3.22 in), while the daytime stays warm at 32 °C (89 °F). Nights begin to warm up again, averaging 19 °C (67 °F). The weather makes for a pleasant end to the dry season, with routine resumptions of light showers.
September weather
September in Rio Branco brings the heat, as it's the warmest month with a daytime high of 32 °C (89 °F). Rain is still relatively scarce, totaling 112 mm (4.40 in), but the air begins feeling more humid as nights stay at a mild 21 °C (69 °F).
October weather
The onset of October alerts to the coming wet season's revival in Rio Branco, with rainfall reaching 145 mm (5.70 in). Daily highs are unrelenting at about 32 °C (89 °F), and the night offers only a slight drop in temperature to 22 °C (71 °F), hinting at the sticky days ahead.
November weather
November sees a rise in Rio Branco's rain frequency, with precipitation of 178 mm (7.00 in). Daytime temperatures continue to provide consistent warmth around 31 °C (87 °F), yet as evening approaches, the temperature moderately reduces to 22 °C (71 °F).
December weather
As the year closes with December in Rio Branco, the enveloping wet season is unmistakable, dousing the city with 194 mm (7.65 in) of rainfall. Temperatures still cling to overheated highs of 32 °C (89 °F), while nights cool off slightly to 21 °C (69 °F). The towering cumulus clouds and spontaneous showers become daily spectacles.
FAQs
How many rainy days can one expect in Rio Branco during January?
Expect a high number of rainy days in January, averaging around 26, so keep your rain gear handy.
Are the days in February warmer or cooler than January in Rio Branco?
Daytime temperatures in February are very similar to January, with a negligible decrease to 30 °C (86 °F), maintaining the warm conditions.
What is the average maximum daytime temperature in Rio Branco during March?
March maintains the consistent warmth of preceding months with an average daytime peak of 30 °C (86 °F).
Does Rio Branco start to dry out in April?
April is indeed less drenched than the first quarter of the year, signaling the approach of drier times with decreased precipitation at 163 mm (6.41 in).
How does the temperature in May compare to previous months in Rio Branco?
May's temperatures are consistent with the established pattern of warmth, hitting average highs of around 30 °C (86 °F) during the day.
What can I expect from the weather in Rio Branco during June?
Expect warm, drier days in June with an average high of 30 °C (86 °F) coupled with the welcome decrease in rain to just 72 mm (2.83 in).
Is July the driest month in Rio Branco?
Indeed, July is the driest month, with the least rainfall, marking it as the most arid period with a mere 61 mm (2.39 in) of precipitation.
Does rain increase significantly in Rio Branco during August?
While there's an uptick in August's precipitation to 82 mm (3.22 in), it's a gentle increase that heralds the impending wet season without overwhelming dry conditions.
Is September the hottest month in Rio Branco?
September stands as the hottest month, with temperatures soaring to an average maximum of 32 °C (89 °F), which can feel particularly sweltering.
How does the weather begin to change in Rio Branco during October?
October's weather begins to shift with an increase in rainfall to 145 mm (5.70 in), signaling the preparatory phase for the upcoming wet season, while temperatures remain high.
What characterizes November's climate in Rio Branco?
November is characterized by heightened rainfall of 178 mm (7.00 in) and persistent daytime warmth, indicative of the transitional period towards the wet season.
What weather should I be prepared for in Rio Branco during December?
Prepare for frequent rains with precipitation reaching up to 194 mm (7.65 in), and continue to expect the heat with daytime temperatures around 32 °C (89 °F).
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.