5-day weather forecast Rio de Janeiro 17-05-2026

Weather forecast Rio de Janeiro today 17.05.2026: patchy rain possible, temperature from 21 °C to 28 °C.

Precipitation probability 100%. Wind up to 3.11 m/s (gusts 4.81 m/s). Air humidity 61–94%, atmospheric pressure 759–763 mm Hg, UV index up to 6.1.

Sunrise 06:19
Sunset 17:19

Waxing Crescent0% illuminated
Moonrise 07:08 · Moonset 17:58

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Table

Sun, May 17, 2026

Mon, May 18 →

Forecast from 21 °C to 28 °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)	22	22	22	21	21	21	21	21	23	25	26	27	27	27	28	27	26	24	25	22	22	22	22	22
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0.18	0	0	0.19	0.67	1.03	0.68	0.58	0.61	0.3	0.13	0.02

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 (%)	34	32	34	35	36	37	9	10	14	18	24	28	84	25	19	72	82	85	25	88	79	70	86	50
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	100	0	0	100	100	100	100	100	100	100	100	72

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)	1.61	1.39	1.5	1.31	1.5	1.81	1.89	1.89	0.89	0.31	0.69	1.69	1.81	2.31	2.19	2.5	2.81	2.89	2.31	2.11	2.5	2.5	2.5	3.11
Wind gust (m/s)	2.36	2.11	2.28	1.97	2.31	2.83	3.31	3.17	1.25	0.36	0.81	1.97	2.08	2.75	2.78	3.5	4.31	4.81	3.78	3.78	4.64	4.72	3.78	4.78
Wind direction (°)	NE 47°	NE 47°	NE 49°	NE 52°	NE 51°	NE 39°	NNE 22°	NNE 17°	N 355°	W 263°	S 179°	S 169°	SE 141°	SE 132°	SE 126°	SE 133°	SE 144°	S 182°	SW 220°	W 271°	W 276°	WNW 293°	WNW 289°	W 268°

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 (%)	90	90	91	91	91	92	86	85	78	70	65	63	63	62	61	64	74	85	83	93	93	94	93	94

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)	763	762	762	761	761	761	761	761	761	762	762	761	761	760	759	759	759	760	759	762	762	763	763	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	4.3	5.8	6.1	5.4	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)	32.8	30.2	27.7	26.6	26.4	21	19	18.4	17.4	15.9	14.5	13.6	13.4	13.7	15	18.1	21	22.7	25.9	27.9	29.5	29.5	27.4	25.2
PM10 (µg/m³)	33.6	31.1	28.4	27.2	27	21.8	20.1	19.5	18.6	17.3	16	15	15	15.2	15.9	18.9	21.7	23.4	26.6	28.6	30.2	30.1	27.8	25.4
Ozone (O₃) (µg/m³)	27	26	26	33	51	75	96	112	124	131	130	124	117	110	102	93	82	69	57	45	33	24	20	18
NO₂ (µg/m³)	33.5	31.4	28.9	25.8	21.6	16.8	12.5	9.1	6.2	4.3	3.4	3.4	4.6	7.5	11.5	15.9	20.3	25	29.8	35.5	41.4	44.3	42	36.8
SO₂ (µg/m³)	7.6	7.5	7.7	7.9	8.3	8.7	8.7	7.9	6.7	5.7	5.1	4.6	4.6	5.1	6	7.1	8.4	9.9	10.9	11.3	11.2	10.8	9.9	8.7
CO (µg/m³)	211.9	210.9	213.9	226.9	256.9	295.9	329.9	355.9	376.9	383.9	366.9	335.9	307.9	287.9	269.9	262.9	253.9	254.9	303.9	449.9	642.9	778.9	808.9	780.9

Sun, May 17, 2026

Mon, May 18 →

Frequently asked questions about the weather in Rio de Janeiro

Today in Rio de Janeiro the temperature ranges from 21 °C to 28 °C, wind up to 3.11 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Rio de Janeiro today is 100%. 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 3.11 m/s with gusts up to 4.81 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Rio de Janeiro today ranges from 61% to 94%. View the humidity chart above for hourly details.

The UV index in Rio de Janeiro today reaches up to 6.1. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Rio de Janeiro today ranges from 759 to 763 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Rio de Janeiro today reaches up to 88%. 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 →