5-day weather forecast State of Rio de Janeiro 18-03-2026
Weather forecast State of Rio de Janeiro today 18.03.2026: fog, temperature from 15 °C to 27 °C.
Precipitation probability 67%. Wind up to 1.31 m/s (gusts 2.22 m/s). Air humidity 51–99%, atmospheric pressure 758–761 mm Hg, UV index up to 11.7.
Sunset 18:06
| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 17 °C | 0% | 18% | 93% | 761 mm Hg | NW 316° 0.39 (0.81) m/s | 0 |
| 01:00 |  Mist | 16 °C | 0% | 26% | 95% | 761 mm Hg | NW 322° 0.69 (1.47) m/s | 0 |
| 02:00 |  Fog | 15 °C | 0% | 100% | 97% | 761 mm Hg | NW 305° 0.89 (1.89) m/s | 0 |
| 03:00 | Fog | 15 °C | 0% | 100% | 98% | 761 mm Hg | WNW 286° 0.69 (1.47) m/s | 0 |
| 04:00 | Fog | 15 °C | 0% | 100% | 97% | 761 mm Hg | W 266° 0.69 (1.47) m/s | 0 |
| 05:00 | Fog | 15 °C | 0% | 100% | 97% | 761 mm Hg | WSW 254° 0.5 (1.06) m/s | 0 |
| 06:00 |  Fog | 15 °C | 0% | 100% | 98% | 761 mm Hg | WSW 247° 0.39 (0.83) m/s | 0 |
| 07:00 |  Partly cloudy | 17 °C | 0% | 33% | 94% | 761 mm Hg | W 265° 0.31 (0.53) m/s | 0.7 |
| 08:00 |  Sunny | 20 °C | 0% | 3% | 82% | 761 mm Hg | NNW 328° 0.39 (0.47) m/s | 2.4 |
| 09:00 | Sunny | 23 °C | 0% | 0% | 66% | 761 mm Hg | N 352° 0.69 (0.81) m/s | 5.1 |
| 10:00 | Sunny | 24 °C | 0% | 7% | 57% | 761 mm Hg | NNW 347° 0.81 (0.92) m/s | 8.5 |
| 11:00 | Sunny | 25 °C | 0% | 12% | 53% | 760 mm Hg | NNW 344° 1 (1.14) m/s | 11.3 |
| 12:00 |  Patchy rain possible | 26 °C | 67% (0.01 mm/hr) | 73% | 51% | 759 mm Hg | NNW 340° 1 (1.14) m/s | 11.7 |
| 13:00 | Patchy rain possible | 27 °C | 78% (0.02 mm/hr) | 70% | 52% | 758 mm Hg | NNW 329° 0.61 (0.69) m/s | 8.6 |
| 14:00 | Patchy rain possible | 26 °C | 63% (0.04 mm/hr) | 70% | 55% | 758 mm Hg | NE 47° 0.11 (0.11) m/s | 4.6 |
| 15:00 | Patchy rain possible | 25 °C | 100% (0.12 mm/hr) | 71% | 63% | 758 mm Hg | SE 126° 0.5 (0.58) m/s | 2.6 |
| 16:00 |  Light rain shower | 23 °C | 100% (0.36 mm/hr) | 76% | 82% | 758 mm Hg | SE 138° 0.81 (1.08) m/s | 1.1 |
| 17:00 | Light rain shower | 20 °C | 100% (0.32 mm/hr) | 51% | 93% | 758 mm Hg | SSE 153° 1.11 (1.75) m/s | 0.3 |
| 18:00 | Fog | 19 °C | 100% (0.15 mm/hr) | 100% | 98% | 759 mm Hg | SSE 162° 1.31 (2.22) m/s | 0 |
| 19:00 | Fog | 19 °C | 100% (0.06 mm/hr) | 100% | 99% | 759 mm Hg | SSE 160° 1.31 (2.14) m/s | 0 |
| 20:00 | Fog | 19 °C | 64% (0.05 mm/hr) | 100% | 99% | 760 mm Hg | S 170° 1.11 (1.69) m/s | 0 |
| 21:00 | Fog | 19 °C | 100% (0.06 mm/hr) | 100% | 99% | 760 mm Hg | S 172° 1.11 (1.61) m/s | 0 |
| 22:00 | Fog | 18 °C | 70% (0.03 mm/hr) | 100% | 99% | 761 mm Hg | S 178° 1 (1.56) m/s | 0 |
| 23:00 | Fog | 18 °C | 75% (0.01 mm/hr) | 100% | 99% | 760 mm Hg | S 169° 0.69 (1.14) m/s | 0 |
Frequently asked questions about the weather in State of Rio de Janeiro
What is the weather in State of Rio de Janeiro today?
Today in State of Rio de Janeiro the temperature ranges from 15 °C to 27 °C, wind up to 1.31 m/s. Check the detailed hourly forecast above for more information.
Will it rain in State of Rio de Janeiro this week?
The precipitation probability in State of Rio de Janeiro today is 67%. View the full multi-day forecast above to see the rain chances for each upcoming day.
What is the wind speed in State of Rio de Janeiro today?
The wind speed in State of Rio de Janeiro today reaches up to 1.31 m/s with gusts up to 2.22 m/s. Check the detailed wind chart above for hourly wind data.
What is the humidity in State of Rio de Janeiro today?
The air humidity in State of Rio de Janeiro today ranges from 51% to 99%. View the humidity chart above for hourly details.
What is the UV index in State of Rio de Janeiro today?
The UV index in State of Rio de Janeiro today reaches up to 11.7. Check the UV index chart above for hourly values throughout the day.
What is the atmospheric pressure in State of Rio de Janeiro today?
The atmospheric pressure in State of Rio de Janeiro today ranges from 758 to 761 mm Hg. View the pressure chart above for hourly readings.
What is the cloud cover in State of Rio de Janeiro today?
Cloud cover in State of Rio de Janeiro today reaches up to 100%. Check the cloud cover chart above for hourly details throughout the day.
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.