5-day weather forecast Rio de Janeiro 21-03-2026
Weather forecast Rio de Janeiro Saturday 21 March 21.03.2026: sunny, temperature from 22 °C to 27 °C.
Precipitation probability 66%. Wind up to 3.89 m/s (gusts 4.89 m/s). Air humidity 65–86%, atmospheric pressure 758–761 mm Hg, UV index up to 10.2.
Sunrise 05:56
Sunset 18:07
Sunset 18:07
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 23 °C | 0% | 10% | 79% | 758 mm Hg | NNE 19° 0.89 (1.42) m/s | 0 |
| 01:00 | Clear | 23 °C | 0% | 11% | 81% | 758 mm Hg | N 359° 1.11 (1.75) m/s | 0 |
| 02:00 | Clear | 22 °C | 0% | 10% | 82% | 758 mm Hg | NNW 345° 1 (1.58) m/s | 0 |
| 03:00 | Clear | 22 °C | 0% | 8% | 84% | 758 mm Hg | NNW 333° 0.89 (1.42) m/s | 0 |
| 04:00 | Clear | 22 °C | 0% | 7% | 84% | 758 mm Hg | NNW 334° 0.89 (1.42) m/s | 0 |
| 05:00 | Clear | 22 °C | 0% | 7% | 85% | 758 mm Hg | NNW 343° 1 (1.58) m/s | 0 |
| 06:00 |  Sunny | 22 °C | 0% | 9% | 86% | 758 mm Hg | N 3° 1.19 (1.92) m/s | 0 |
| 07:00 | Sunny | 23 °C | 0% | 12% | 83% | 759 mm Hg | N 8° 0.81 (1.11) m/s | 0.6 |
| 08:00 | Sunny | 24 °C | 0% | 10% | 77% | 759 mm Hg | NNE 22° 0.81 (0.97) m/s | 2.2 |
| 09:00 | Sunny | 25 °C | 0% | 25% | 71% | 759 mm Hg | ENE 61° 0.61 (0.69) m/s | 5 |
| 10:00 | Sunny | 26 °C | 0% | 13% | 68% | 759 mm Hg | SE 141° 1.31 (1.5) m/s | 7.9 |
| 11:00 | Sunny | 27 °C | 0% | 22% | 67% | 759 mm Hg | SSE 152° 2.5 (2.89) m/s | 10.1 |
| 12:00 | Sunny | 27 °C | 0% | 19% | 66% | 759 mm Hg | SSE 147° 2.81 (3.22) m/s | 10.2 |
| 13:00 |  Patchy rain possible | 27 °C | 66% (0.01 mm/hr) | 74% | 65% | 758 mm Hg | SSE 149° 3.5 (4.03) m/s | 8.4 |
| 14:00 |  Partly cloudy | 27 °C | 0% | 30% | 66% | 758 mm Hg | SE 146° 3.81 (4.39) m/s | 5.7 |
| 15:00 | Partly cloudy | 26 °C | 0% | 50% | 67% | 758 mm Hg | SSE 148° 3.81 (4.56) m/s | 3.5 |
| 16:00 |  Cloudy | 26 °C | 0% | 79% | 68% | 758 mm Hg | SE 145° 3.89 (4.89) m/s | 1.4 |
| 17:00 | Patchy rain possible | 25 °C | 81% (0.01 mm/hr) | 81% | 70% | 758 mm Hg | SE 132° 3.11 (4.14) m/s | 0.3 |
| 18:00 | Cloudy | 25 °C | 0% | 84% | 72% | 759 mm Hg | ESE 121° 2.61 (3.56) m/s | 0 |
| 19:00 |  Overcast | 25 °C | 0% | 88% | 73% | 760 mm Hg | ESE 113° 2.31 (3.17) m/s | 0 |
| 20:00 |  Cloudy | 25 °C | 0% | 71% | 74% | 760 mm Hg | E 94° 2.11 (2.92) m/s | 0 |
| 21:00 |  Partly cloudy | 25 °C | 0% | 57% | 75% | 761 mm Hg | E 81° 2.11 (2.89) m/s | 0 |
| 22:00 | Partly cloudy | 25 °C | 0% | 43% | 75% | 761 mm Hg | ENE 64° 1.81 (2.53) m/s | 0 |
| 23:00 | Clear | 24 °C | 0% | 24% | 77% | 760 mm Hg | NE 35° 1.69 (2.42) m/s | 0 |
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.