5-day weather forecast Riyadh 18-05-2026

Weather forecast Riyadh Monday, May 18 18.05.2026: sunny, temperature from 25 °C to 38 °C.

No precipitation expected. Wind up to 5.69 m/s (gusts 9.97 m/s). Air humidity 9–17%, atmospheric pressure 755–759 mm Hg, UV index up to 11.5.

Sunrise 05:08
Sunset 18:31

Waxing Crescent2% illuminated
Moonrise 06:10 · Moonset 20:40

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Table

← Sun, May 17

Mon, May 18, 2026

Tue, May 19 →

Forecast from 25 °C to 38 °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)	28	27	27	26	26	25	25	27	30	32	33	35	36	37	38	38	38	38	37	35	34	34	33	33
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 (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

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)	3.69	3.19	3.61	4.31	4.61	4.81	5.11	5.39	5.39	5.19	5.19	5.31	5.69	5.19	5.11	4.81	4.31	4.69	4.5	3.89	4	2.81	2.81	2.61
Wind gust (m/s)	6.97	6.25	7.11	8.61	9.31	9.97	9.64	7.61	6.22	5.97	5.97	6.11	6.56	5.97	5.86	5.53	4.94	5.53	6.22	6.83	7.47	5.58	5.75	5.47
Wind direction (°)	NNW 344°	NNW 338°	NNW 334°	NNW 329°	NW 324°	NW 322°	NW 326°	NNW 336°	NNW 343°	N 353°	N 351°	NNW 348°	N 349°	NNW 348°	NNW 346°	NNW 343°	NNW 341°	NNW 344°	NNW 346°	NNW 340°	NNW 330°	WNW 297°	W 269°	WSW 254°

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 (%)	12	13	13	14	15	16	17	15	13	11	11	11	10	10	10	9	9	9	10	11	12	13	13	13

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)	758	758	758	758	758	758	758	759	759	758	758	758	758	757	756	755	755	755	755	756	756	757	756	756

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	0.2	1.1	3	5.8	8.6	10.7	11.5	10.2	7.8	4.9	2.3	0.7	0.1	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)	190.4	160.6	122	95.4	79.6	66.8	58.4	64.7	87	130.8	196.9	177.9	169.9	163.4	161.6	152.7	144.8	138.7	130.4	116.6	101.9	83.1	74.7	82.6
PM10 (µg/m³)	1472.4	1103.6	678.9	422.8	302.6	220.7	191.4	309.2	550.4	965.8	1427.7	1345.7	1386.7	1435.1	1464.9	1409.1	1342	1289.9	1211.6	1070.1	908	677	456.3	449.8
Ozone (O₃) (µg/m³)	55	48	44	41	40	40	40	39	38	41	51	66	78	87	93	96	95	90	84	77	69	58	41	20
NO₂ (µg/m³)	40.6	43.5	45.4	45.6	43	38.7	35.2	33.5	32.6	31.4	29.7	27.6	25.2	21.8	17.9	15.1	13.6	13.1	14.4	17.3	22	29.8	43.6	60.5
SO₂ (µg/m³)	42.9	44.4	44.2	43.8	43.6	43.2	43.1	43.7	44.7	45.5	46.6	47.5	46.3	41	33.6	27.8	25.1	24	23.9	23.9	25	29.4	39.7	53.3
CO (µg/m³)	245.9	260.9	276.9	282.9	271.9	251.9	234.9	224.9	217.9	221.9	248.9	285.9	300.9	272.9	223.9	185.9	170.9	166.9	169.9	173.9	184.9	214.9	287.9	380.9

← Sun, May 17

Mon, May 18, 2026

Tue, May 19 →

Riyadh 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.

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