11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Rain showers
24°
Feels like 34°
Wind↑ WSW 5 km/h
Humidity 98 %
💧 3.6 mm
⚡ storm
Afternoon
Partly cloudy
30°
Feels like 39°
Wind↑ NW 9 km/h
Humidity 62 %
💧 0.1 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
23°
Feels like 31°
Wind↑ WSW 5 km/h
Gusts18 km/h
Humidity 86 %
💧 0.1 mm
Afternoon
Partly cloudy
27°
Feels like 36°
Wind↑ ENE 8 km/h
Humidity 75 %
💧 0.1 mm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
21°
Feels like 29°
Wind↑ NNE 4 km/h
Humidity 92 %
Afternoon
Mainly clear
35°
Feels like 42°
Wind↑ W 6 km/h
Humidity 40 %
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Mainly clear
24°
Feels like 32°
Wind↑ NNE 6 km/h
Humidity 81 %
Rio Branco forecast in charts · next 7 days
The week ahead: highs and lows
▲ This week runs +3.8° warmer than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Rio Branco climate: what a normal year looks like
Afternoons reach 30 °C or more from June to April; the typical peak is 33 °C in September.
A normal year brings roughly 1,820 mm of rain — more than 85% of the towns of 20,000+ people we compared it with.
Days are almost the same length all year: 11 h 32 min of daylight in late June, 12 h 42 min in late December.
Forecast highs for the coming week average 36 °C, 4 °C warmer than a normal October (32 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
30 °C
23 °C
262 mm
Feb
30 °C
23 °C
249 mm
Mar
30 °C
23 °C
259 mm
Apr
30 °C
23 °C
167 mm
May
29 °C
21 °C
85 mm
Jun
30 °C
20 °C
38 mm
Jul
31 °C
19 °C
26 mm
Aug
33 °C
20 °C
41 mm
Sep
33 °C
22 °C
83 mm
Oct
32 °C
23 °C
146 mm
Nov
32 °C
23 °C
208 mm
Dec
31 °C
23 °C
253 mm
Whole year
31 °C
22 °C
1,820 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 9.97° S, 67.81° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Rio Branco: pollution and pollen
2/6
Fair
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.520µg/m³
PM1021µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Rio Branco
Rain observed over the last two hours by official weather radars around Rio Branco, followed by the radar forecast for the next hour where the weather service provides one.
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Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Rio Branco yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Rio Branco
Waning gibbous
87 % illuminated · 18.3 days
Rise 19:04 Set 05:56
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (America/Rio_Branco); phase and lit fraction from a synodic calculation.
Look up a past day in Rio Branco
Curious about the weather in Rio Branco on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Rio Branco weather at a glance
This page gathers everything about the weather in Rio Branco, Acre: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “drizzle”, it is 29 °C (feels like 39 °C) and the wind blows at 5 km/h.
Expected range today: 22 °C to 34 °C and a dry sky; keep an eye on thunderstorms; it will be very hot. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Rio Branco weather data for developers
Use the Rio Branco forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
