5-day weather forecast Rio de Janeiro 18-07-2026

Weather forecast Rio de Janeiro today 18.07.2026: sunny, temperature from 17 °C to 27 °C.

Precipitation probability 5%. Wind up to 3.5 m/s (gusts 7.14 m/s). Air humidity 44–73%, atmospheric pressure 762–766 mm Hg, UV index up to 6.2.

Sunrise 06:32
Sunset 17:25

Waxing Crescent23% illuminated
Moonrise 09:31 · Moonset 21:51

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Table

Sat, Jul 18, 2026

Sun, Jul 19 →

Forecast from 17 °C to 27 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	19	18	18	18	18	18	17	17	19	21	23	25	26	27	27	27	26	24	22	22	21	21	21	23
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Rain chance (%)	4	4	4	4	5	5	5	5	4	3	2	1	1	1	1	1	2	4	5	5	4	4	5	5

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	3.19	2.69	2.81	2.5	2.5	2.61	3	2.89	2.89	2.89	2.39	1.89	2.19	1.89	2.39	2.69	3.11	3.5	3.39	3.39	3.31	3.11	2.81	2.61
Wind gust (m/s)	6.72	5.67	5.86	5.25	5.25	5.47	6.19	5.75	4.69	3.83	3	2.42	2.97	2.61	3.42	3.94	4.86	6.89	7.14	7.14	6.92	6.5	5.89	5.47
Wind direction (°)	NNE 31°	NNE 19°	NNE 14°	N 3°	N 0°	N 357°	N 7°	N 0°	N 2°	N 359°	N 356°	NNE 13°	NNE 14°	NNE 25°	ENE 65°	ENE 70°	E 92°	E 95°	ENE 77°	ENE 60°	NE 43°	NE 41°	NE 41°	NE 34°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	62	63	64	65	66	67	69	69	65	57	52	48	45	44	44	46	52	61	68	67	65	65	66	73

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	766	766	765	765	765	765	765	766	766	766	766	765	764	764	763	762	762	762	763	763	764	764	764	763

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0.2	0.9	2.4	4.2	5.7	6.2	5.5	3.8	2	0.6	0	0	0	0	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	17.8	16.7	15.7	14.7	13.5	12.7	12.3	13.8	15.6	15.5	13	11.6	10.2	9.2	8.8	8.7	8.4	8.3	8.1	8.1	8.5	10.1	11.6	12.7
PM10 (µg/m³)	19.4	18.3	17	16	14.7	13.8	13.3	14.7	16.7	17.3	15.8	14.6	13.2	12.2	11.6	11.4	11.1	10.9	10.5	10.4	10.6	12	13.4	14.4
Ozone (O₃) (µg/m³)	19	18	18	18	16	13	16	28	45	61	73	84	91	92	89	84	79	72	65	58	51	45	40	35
NO₂ (µg/m³)	34.7	32.3	29.3	26.7	25.1	23.9	22.4	20.6	18.6	15.9	11.7	6.8	3.4	2.3	2.7	3.6	5	7	9.1	11.1	13.1	14.9	16.4	17.7
SO₂ (µg/m³)	5.7	5.4	5.1	4.8	4.6	4.5	4.6	5.1	5.9	6.1	5.3	4	3	2.5	2.3	2.2	2.2	2.3	2.5	3	3.6	4.1	4.4	4.7
CO (µg/m³)	126	108	108	118	143	179	213	247	279	294	277	243	223	234	259	283	304	324	331	317	290	259	222	180

Sat, Jul 18, 2026

Sun, Jul 19 →

Frequently asked questions about the weather in Rio de Janeiro

Today in Rio de Janeiro the temperature ranges from 17 °C to 27 °C, wind up to 3.5 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Rio de Janeiro today is 5%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in Rio de Janeiro today reaches up to 3.5 m/s with gusts up to 7.14 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Rio de Janeiro today ranges from 44% to 73%. View the humidity chart above for hourly details.

The UV index in Rio de Janeiro today reaches up to 6.2. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Rio de Janeiro today ranges from 762 to 766 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Rio de Janeiro today reaches up to 0%. Check the cloud cover chart above for hourly details throughout the day.

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.

Learn more about our methodology →