Yasuj, Iran climate

BSh Hot semi-arid

Yasuj has a seasonal warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is July with an average daily high near 39°C, while the coldest is January averaging around 0°C at night. Precipitation totals about 281 mm a year and is strongly seasonal — December alone averages 54 mm while September barely receives 1 mm.

☀️ Summers

Very hot

Highs near 39°C in July.

About 128 days a year above 32 °C

❄️ Winters

Chilly

Lows near 0°C in January.

About 34 freezing nights a year

🌧️ Rain

Fairly dry

About 281 mm of rain a year.

Wettest in December

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

+0.5 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Yasuj climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	13	15	19	25	31	37	39	38	34	28	20	15
Avg temp (°C)	7	9	12	17	23	28	30	29	25	20	13	8
Avg low (°C)	0	3	5	10	15	19	22	20	16	11	5	2
Precipitation (mm)	53	43	36	22	9	10	3	2	1	9	40	54

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	13	15	19	25	31	37
Avg temp (°C)	7	9	12	17	23	28
Avg low (°C)	0	3	5	10	15	19
Precipitation (mm)	53	43	36	22	9	10

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	39	38	34	28	20	15
Avg temp (°C)	30	29	25	20	13	8
Avg low (°C)	22	20	16	11	5	2
Precipitation (mm)	3	2	1	9	40	54

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	4	4	4	4	2	0.5	0.4	0.2	0.1	0.8	3	3
Days with high ≥ 32°C (days)	—	—	—	0.3	14	28	29	30	25	3	—	—
Days with low ≤ 0°C (days)	14	7	1	—	0.0	—	—	—	—	—	2	9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	4	4	4	4	2	0.5
Days with high ≥ 32°C (days)	—	—	—	0.3	14	28
Days with low ≤ 0°C (days)	14	7	1	—	0.0	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	0.4	0.2	0.1	0.8	3	3
Days with high ≥ 32°C (days)	29	30	25	3	—	—
Days with low ≤ 0°C (days)	—	—	—	—	2	9

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	50	49	49	55	43	29	34	32	29	36	46	47
Clear days (≤ 30% cloud)	6	7	7	5	7	14	14	13	13	9	8	8
Partly cloudy days (30–70%)	17	15	16	16	20	15	15	18	16	20	16	16
Cloudy days (≥ 70%)	8	7	8	9	4	1	2	1.0	0.7	2	6	7
Relative humidity (%)	61	58	53	47	33	17	17	18	19	28	46	56
Wind speed (km/h)	7.3	8.0	8.1	7.9	8.2	8.5	8.7	8.2	7.5	6.7	6.6	6.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	50	49	49	55	43	29
Clear days (≤ 30% cloud)	6	7	7	5	7	14
Partly cloudy days (30–70%)	17	15	16	16	20	15
Cloudy days (≥ 70%)	8	7	8	9	4	1
Relative humidity (%)	61	58	53	47	33	17
Wind speed (km/h)	7.3	8.0	8.1	7.9	8.2	8.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	34	32	29	36	46	47
Clear days (≤ 30% cloud)	14	13	13	9	8	8
Partly cloudy days (30–70%)	15	18	16	20	16	16
Cloudy days (≥ 70%)	2	1.0	0.7	2	6	7
Relative humidity (%)	17	18	19	28	46	56
Wind speed (km/h)	8.7	8.2	7.5	6.7	6.6	6.7

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Shiraz, a weather station, about 156 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →