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5-day weather forecast Rio de Janeiro 18-03-2026

Weather forecast Rio de Janeiro tomorrow 18.03.2026: sunny, temperature from 22 °C to 27 °C.

No precipitation expected. Wind up to 4.19 m/s (gusts 5.03 m/s). Air humidity 69–91%, atmospheric pressure 758–760 mm Hg, UV index up to 9.5.

Sunrise 05:56
Sunset 18:08
Chart
Table
Type of temperature:
°C
°F
Wed, 18 Mar, 2026
TemperaturePrecipitationCloud coverHumidityPressureWindUV Index
00:00Weather
Clear
23 °C0% 24%86%760 mm HgNE 53° 1.81 (2.69) m/s0
01:00Weather
Partly cloudy
22 °C0% 33%87%760 mm HgNE 35° 1.31 (1.97) m/s0
02:00Weather
Partly cloudy
22 °C0% 37%88%759 mm HgNE 36° 1 (1.5) m/s0
03:00Weather
Partly cloudy
22 °C0% 39%89%759 mm HgNNE 18° 0.89 (1.36) m/s0
04:00Weather
Partly cloudy
22 °C0% 43%89%759 mm HgN 11° 1.11 (1.67) m/s0
05:00Weather
Partly cloudy
22 °C0% 45%90%759 mm HgNNE 24° 1 (1.53) m/s0
06:00Weather
Partly cloudy
22 °C0% 46%91%760 mm HgNE 37° 1 (1.53) m/s0
07:00Weather
Partly cloudy
22 °C0% 46%89%760 mm HgNNE 32° 0.89 (1.22) m/s0.6
08:00Weather
Partly cloudy
23 °C0% 39%84%760 mm HgNNE 32° 1 (1.22) m/s2.1
09:00Weather
Partly cloudy
25 °C0% 42%78%760 mm HgNE 50° 0.81 (0.92) m/s4.6
10:00Weather
Sunny
26 °C0% 17%73%760 mm HgSE 127° 0.89 (1.03) m/s7.2
11:00Weather
Sunny
27 °C0% 6%71%759 mm HgSSE 148° 2.11 (2.42) m/s9
12:00Weather
Sunny
27 °C0% 0%70%759 mm HgSSE 153° 3.11 (3.58) m/s9.5
13:00Weather
Sunny
27 °C0% 0%69%758 mm HgSSE 155° 3.81 (4.36) m/s8.2
14:00Weather
Sunny
27 °C0% 0%69%758 mm HgSSE 149° 4 (4.61) m/s6.1
15:00Weather
Sunny
27 °C0% 1%70%758 mm HgSE 141° 4.19 (4.83) m/s3.7
16:00Weather
Sunny
26 °C0% 12%71%758 mm HgSE 139° 4.19 (5.03) m/s1.7
17:00Weather
Sunny
25 °C0% 22%73%758 mm HgSE 133° 3.61 (4.61) m/s0.4
18:00Weather
Sunny
25 °C0% 18%75%758 mm HgSE 124° 2.81 (3.89) m/s0
19:00Weather
Clear
24 °C0% 15%76%758 mm HgESE 121° 2.31 (3.25) m/s0
20:00Weather
Clear
24 °C0% 14%76%759 mm HgESE 110° 1.81 (2.58) m/s0
21:00Weather
Clear
24 °C0% 21%77%759 mm HgE 96° 1.69 (2.47) m/s0
22:00Weather
Clear
23 °C0% 18%78%759 mm HgENE 77° 1.69 (2.56) m/s0
23:00Weather
Clear
23 °C0% 18%81%759 mm HgENE 61° 1.61 (2.42) m/s0

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.

Learn more about our methodology

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