5-day weather forecast Tehran 21-05-2026

Weather forecast Tehran Thursday, May 21 21.05.2026: sunny, temperature from 18 °C to 26 °C.

Precipitation probability 100%. Wind up to 7.11 m/s (gusts 8.17 m/s). Air humidity 20–45%, atmospheric pressure 753–756 mm Hg, UV index up to 10.9.

Sunrise 05:56
Sunset 20:07

Waxing Crescent24% illuminated
Moonrise 10:19 · Moonset 00:18

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← Wed, May 20

Thu, May 21, 2026

Forecast from 18 °C to 26 °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	19	20	21	22	23	24	25	25	26	26	25	23	22	21	21	20	20	20
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.2	0.4	0.53	0.4	0.3	0.13	0.1	0.1

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 (%)	3	4	4	8	5	20	17	6	5	6	5	4	3	3	2	2	30	59	87	86	84	83	82	80
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	100	100	100	100	100	100	100	100

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)	3.61	2.89	2.11	2	1.39	1.31	1.5	2.69	3.61	4.81	5.69	6.61	7	7.11	6.19	5.39	5	4.5	4.11	3	2	0.89	1.31	1.69
Wind gust (m/s)	4.14	3.33	2.42	2.31	1.61	1.5	1.72	3.11	4.14	5.53	6.56	7.58	8.06	8.17	7.14	6.22	5.69	5.19	4.72	3.5	2.31	1.03	1.5	2
Wind direction (°)	WNW 294°	NW 319°	NW 324°	NW 314°	NW 317°	WNW 297°	W 277°	W 262°	W 269°	W 266°	W 266°	W 264°	W 274°	WNW 284°	WNW 292°	WNW 297°	SSW 199°	E 100°	N 1°	ENE 62°	ESE 122°	S 183°	SE 139°	E 95°

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 (%)	38	39	39	38	38	38	36	34	32	28	26	24	21	21	21	20	25	31	36	39	42	45	44	43

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)	755	755	755	755	755	755	756	756	756	756	755	755	755	755	754	753	754	754	755	755	756	756	756	755

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	0.6	1.9	4.1	6.7	9.2	10.8	10.9	9.2	6.9	4.3	5	6	5	5	0	0	0	0

← Wed, May 20

Thu, May 21, 2026

Tehran 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 →