5-day weather forecast Rio de Janeiro 18-03-2026
Weather forecast Rio de Janeiro tomorrow 18.03.2026: partly cloudy, temperature from 22 °C to 28 °C.
Precipitation probability 77%. Wind up to 4.11 m/s (gusts 5.31 m/s). Air humidity 65–91%, atmospheric pressure 758–760 mm Hg, UV index up to 9.5.
Sunrise 05:54
Sunset 18:07
Sunset 18:07
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 23 °C | 0% | 42% | 86% | 760 mm Hg | ENE 61° 2.19 (3.28) m/s | 0 |
| 01:00 | Partly cloudy | 23 °C | 0% | 44% | 87% | 760 mm Hg | NE 54° 1.81 (2.69) m/s | 0 |
| 02:00 | Partly cloudy | 22 °C | 0% | 44% | 88% | 759 mm Hg | NE 50° 1.61 (2.42) m/s | 0 |
| 03:00 | Partly cloudy | 22 °C | 0% | 40% | 89% | 758 mm Hg | NE 48° 1.5 (2.25) m/s | 0 |
| 04:00 | Partly cloudy | 22 °C | 0% | 34% | 90% | 758 mm Hg | NNE 32° 1.69 (2.56) m/s | 0 |
| 05:00 | Partly cloudy | 22 °C | 0% | 31% | 90% | 759 mm Hg | NNE 24° 1.5 (2.28) m/s | 0 |
| 06:00 |  Partly cloudy | 22 °C | 0% | 33% | 91% | 759 mm Hg | NNE 20° 1.39 (2.17) m/s | 0 |
| 07:00 | Partly cloudy | 22 °C | 0% | 31% | 88% | 760 mm Hg | NE 34° 1.11 (1.53) m/s | 0.6 |
| 08:00 |  Sunny | 24 °C | 0% | 18% | 84% | 760 mm Hg | NNE 32° 1.31 (1.61) m/s | 2.1 |
| 09:00 | Sunny | 25 °C | 0% | 23% | 77% | 760 mm Hg | NE 45° 1.11 (1.28) m/s | 4.6 |
| 10:00 | Partly cloudy | 26 °C | 0% | 30% | 71% | 760 mm Hg | E 101° 0.89 (1.03) m/s | 7.2 |
| 11:00 | Partly cloudy | 27 °C | 0% | 27% | 68% | 759 mm Hg | SE 124° 1.81 (2.08) m/s | 9 |
| 12:00 | Partly cloudy | 27 °C | 0% | 26% | 66% | 758 mm Hg | SE 137° 2.89 (3.33) m/s | 9.5 |
| 13:00 | Partly cloudy | 28 °C | 0% | 56% | 65% | 758 mm Hg | SE 138° 3.39 (3.92) m/s | 8.2 |
| 14:00 |  Cloudy | 27 °C | 0% | 82% | 66% | 758 mm Hg | SE 138° 3.89 (4.64) m/s | 6.1 |
| 15:00 |  Patchy rain possible | 27 °C | 77% (0.02 mm/hr) | 86% | 69% | 758 mm Hg | SE 136° 4.11 (5.14) m/s | 3.7 |
| 16:00 | Patchy rain possible | 26 °C | 79% (0.01 mm/hr) | 94% | 71% | 758 mm Hg | SE 130° 4.11 (5.31) m/s | 1.7 |
| 17:00 | Patchy rain possible | 26 °C | 83% (0.01 mm/hr) | 94% | 75% | 758 mm Hg | ESE 122° 3.61 (4.83) m/s | 0.4 |
| 18:00 | Patchy rain possible | 25 °C | 81% (0.02 mm/hr) | 86% | 78% | 758 mm Hg | ESE 115° 3.31 (4.58) m/s | 0 |
| 19:00 |  Patchy rain possible | 25 °C | 67% (0.03 mm/hr) | 81% | 79% | 758 mm Hg | ESE 110° 3.11 (4.28) m/s | 0 |
| 20:00 | Patchy rain possible | 25 °C | 70% (0.04 mm/hr) | 78% | 80% | 758 mm Hg | ESE 103° 3.19 (4.42) m/s | 0 |
| 21:00 | Patchy rain possible | 24 °C | 100% (0.13 mm/hr) | 81% | 81% | 759 mm Hg | E 98° 3.11 (4.33) m/s | 0 |
| 22:00 | Patchy rain possible | 24 °C | 100% (0.05 mm/hr) | 70% | 81% | 759 mm Hg | E 90° 3 (4.19) m/s | 0 |
| 23:00 | Patchy rain possible | 24 °C | 87% (0.02 mm/hr) | 60% | 82% | 759 mm Hg | E 83° 2.81 (3.86) 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.