Shahrīār climate

Name: Shahrīār
Address: IR

Shahrīār is warmest in July, with average highs of 36 °C, and coldest in January, when nights average -4.8 °C. March is the wettest month (49 mm) and July the driest (1.1 mm). Figures are 1991–2020 climate normals.

Across a full year Shahrīār averages 291 mm of rain, 157 days above 25 °C and 90 days below freezing.

Iran · population 309,607 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 36 °C
Coldest month January -4.8 °C
Driest month July 1 mm
Wettest month March 49 mm
Least cloud September 7 % cloud
Hottest on record July 42 °C
Coldest on record January -24 °C

What to expectShahrīār through the year

Shahrīār has a clear annual cycle: average daily highs run from 6.4 °C in January to 36 °C in July, a swing of 29 °C in mean temperature across the year.

Counted across a normal year, 157 days a year reach 25 °C, 112 of them reach 30 °C, 90 nights drop below freezing. The warmest reading in the 1991–2020 record is 42 °C, in July.

Rain is strongly seasonal. March averages 49 mm against 1 mm in July — 43 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	6.4 °C	38 mm	39 %
February	8.7 °C	41 mm	40 %
March	14.2 °C	49 mm	43 %
April	20.5 °C	45 mm	44 %
May	27.0 °C	15 mm	34 %
June	33.2 °C	2 mm	14 %
July	36.1 °C	1 mm	11 %
August	35.1 °C	2 mm	7 %
September	30.4 °C	2 mm	7 %
October	23.2 °C	17 mm	24 %
November	14.0 °C	39 mm	38 %
December	8.6 °C	39 mm	41 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	6.4 °C	-4.8 °C	0.4 °C	15.5 °C	-24.5 °C	0	0	28
February	8.7 °C	-3.1 °C	2.6 °C	21.1 °C	-19.2 °C	0	0	23
March	14.2 °C	1.4 °C	7.9 °C	30.7 °C	-19.9 °C	1	0	11
April	20.5 °C	6.8 °C	14.1 °C	31.9 °C	-3.6 °C	4	0	1
May	27.0 °C	12.7 °C	20.5 °C	36.6 °C	0.4 °C	22	7	0
June	33.2 °C	18.4 °C	26.6 °C	40.5 °C	9.5 °C	30	26	0
July	36.1 °C	21.9 °C	29.7 °C	41.6 °C	15.4 °C	31	31	0
August	35.1 °C	20.9 °C	28.6 °C	41.0 °C	10.8 °C	31	30	0
September	30.4 °C	16.5 °C	23.8 °C	37.7 °C	9.6 °C	29	18	0
October	23.2 °C	10.4 °C	16.9 °C	31.7 °C	2.8 °C	10	1	0
November	14.0 °C	3.0 °C	8.4 °C	24.7 °C	-9.8 °C	0	0	7
December	8.6 °C	-2.0 °C	2.9 °C	19.9 °C	-14.6 °C	0	0	22

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	38 mm	7	10 h/day	39 %	63 %	10 km/h
February	41 mm	8	11 h/day	40 %	62 %	12 km/h
March	49 mm	9	12 h/day	43 %	57 %	13 km/h
April	45 mm	8	13 h/day	44 %	50 %	14 km/h
May	15 mm	3	14 h/day	34 %	37 %	16 km/h
June	2 mm	0	15 h/day	14 %	26 %	16 km/h
July	1 mm	0	14 h/day	11 %	26 %	16 km/h
August	2 mm	0	14 h/day	7 %	25 %	15 km/h
September	2 mm	0	12 h/day	7 %	28 %	14 km/h
October	17 mm	3	11 h/day	24 %	40 %	12 km/h
November	39 mm	6	10 h/day	38 %	58 %	10 km/h
December	39 mm	7	9.8 h/day	41 %	63 %	9.6 km/h

How Shahrīār compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Shahrīār	36 °C	-4.8 °C	291 mm	157
Fardīs · Iran	35 °C	-5.6 °C	290 mm	151
Golestān · Iran	37 °C	-3.2 °C	302 mm	171
Eslamshahr · Iran	37 °C	-3.5 °C	313 mm	168
Karaj · Iran	35 °C	-6.0 °C	288 mm	147
Tehran · Iran	36 °C	-5.0 °C	346 mm	156
Naz̧arābād · Iran	35 °C	-4.1 °C	356 mm	145

Where Shahrīār ranks

Ranking	Position	Value
Places with the best weather in Asia in October	34thof 50	96/100
Places with the best weather in the world in October	42ndof 50	96/100

Planning a trip? See the best time to visit Shahrīār.

QuestionsCommon questions about Shahrīār’s climate

When is the best time to visit Shahrīār?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, September, October sit closest to 20 °C on average, July is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Shahrīār get?

In July, the warmest month, daily highs average 36 °C. About 112 days a year pass 30 °C. The highest value in the 1991–2020 record is 42 °C.

How cold does it get in winter?

Nights average -4.8 °C in January, the coldest month. A normal year has 90 nights below freezing.

Which month is wettest in Shahrīār?

March, averaging 49 mm over 9 days with rain. The driest month is July with 1 mm. The year as a whole averages 291 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Shahrīār rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.