5-day weather forecast Rio de Janeiro Sep 15, 2026

19°19–21° · Light rain shower

Weather forecast Rio de Janeiro today Sep 15, 2026: patchy rain possible, temperature from 19 °C to 21 °C.

Precipitation probability 88%. Wind up to 5.5 m/s (gusts 7.14 m/s). Air humidity 78–94%, atmospheric pressure 761–765 mm Hg, UV index up to 6.1.

Sunrise 05:49
Sunset 17:46
Waxing Crescent23% illuminated
Moonrise 08:30 · Moonset 22:22
Chart
Table
Tue, Sep 15, 2026

Forecast from 19 °C to 21 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)191919191919202020202020212121212120202020191919
Precipitation (mm/hr)4.13.262.740.01000.070.110.240.270.180.10.030.010.070.260.260.180.230.010.10.520.60.46

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)1001001009823586659929795967488577796100688090578395
Rain chance (%)888686321727313246484338222119364241372637516058

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)1.51.191.315.54.391.892.192.693.8943.6945.115.195.3155.314.813.6133.531.691.11
Wind gust (m/s)1.51.721.317.146.532.422.813.314.54.814.725.145.836.116.536.536.726.315.114.395.033.836.691.53
Wind direction (°)WNW 303°W 263°NNE 27°NNE 33°N 11°NNW 339°SW 226°SW 221°SW 224°SW 234°SW 236°SW 231°SW 236°SW 235°SW 236°WSW 246°WSW 246°WSW 252°WSW 258°WSW 256°WSW 252°WSW 254°WNW 300°W 267°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)929394939494949391909089827978818286889089909191

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)764764763761761761762763763764764764764763763763763763763763764765765764

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index00000000.41.843.24.96.15.742.310.3000000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)3.56.44.53.55.87.510.214.215.417.616.817.317.515.213.412.712.913.715.815.415.216.513.69.7
PM10 (µg/m³)3.76.74.73.56.17.810.514.516.219.219.520.822.22017.816.816.917.319.218.718.119.415.811.6
Ozone (O₃) (µg/m³)2422201814111638699410711211210489745842302525262627
NO₂ (µg/m³)44.243.642.541.239.838.336.434.231.728.624.118.915.213.112.514.621.831.839.14140.239.138.637.8
SO₂ (µg/m³)8.287.67.47.16.97.710.514.316.616.114.112.210.89.48.47.87.47.37.47.8888
CO (µg/m³)522498431403481598634506297142103118134128123130164211241241225204176144
Tue, Sep 15, 2026

Frequently asked questions about the 5-day weather in Rio de Janeiro

What will the weather be like in Rio de Janeiro over the next 5 days?

Over the next 5 days in Rio de Janeiro the temperature is expected to range from about 18 to 23 °C. See the detailed hourly forecast for each of the 5 days in the charts above.

On which of the next 5 days will it rain in Rio de Janeiro?

The chance of rain in Rio de Janeiro over the next 5 days reaches 88%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.

How accurate is the 5-day weather forecast for Rio de Janeiro?

A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.

Which of the next 5 days in Rio de Janeiro will be the warmest and which the coolest?

Over the next 5 days the temperature in Rio de Janeiro ranges from about 18 to 23 °C. Compare the warmest and coolest day on the temperature chart above.

Will it be windy in Rio de Janeiro over the next 5 days?

Over the next 5 days the wind in Rio de Janeiro picks up to 6 m/s. The windiest days are easy to spot on the wind chart above.

Which day of the week in Rio de Janeiro is best for a walk or a trip?

For a walk or a trip, pick the days with the lowest chance of rain (up to 88%) and light wind — easy to compare on the 5-day charts above.

How can I best use the 5-day forecast for Rio de Janeiro?

The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.

Will I need an umbrella or sunscreen in Rio de Janeiro this week?

Rain reaches a 88% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 6.1; sunscreen is worth it from about 3 upwards.

Rio de Janeiro on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.