Dezful climate

Name: Dezful
Address: IR

Dezful is warmest in July, with average highs of 46 °C, and coldest in January, when nights average 5.7 °C. December is the wettest month (130 mm) and July the driest (0.06 mm). Figures are 1991–2020 climate normals.

Across a full year Dezful averages 639 mm of rain, 232 days above 25 °C and 2 days below freezing.

Iran · population 264,709 · 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 46 °C
Coldest month January 5.7 °C
Driest month July 0 mm
Wettest month December 130 mm
Least cloud September 3 % cloud
Hottest on record July 52 °C
Coldest on record February -2.8 °C

What to expectDezful through the year

Dezful has a clear annual cycle: average daily highs run from 16 °C in January to 46 °C in July, a swing of 28 °C in mean temperature across the year.

Counted across a normal year, 232 days a year reach 25 °C, 198 of them reach 30 °C, 2 nights drop below freezing. The warmest reading in the 1991–2020 record is 52 °C, in July.

Rain is strongly seasonal. December averages 130 mm against 0 mm in July — 2,047 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	16.3 °C	129 mm	43 %
February	18.4 °C	87 mm	39 %
March	23.1 °C	109 mm	38 %
April	29.7 °C	66 mm	38 %
May	37.8 °C	9 mm	26 %
June	44.1 °C	under 1 mm	4 %
July	46.3 °C	under 1 mm	3 %
August	46.1 °C	under 1 mm	3 %
September	41.9 °C	1 mm	3 %
October	34.8 °C	22 mm	19 %
November	24.3 °C	85 mm	36 %
December	18.3 °C	130 mm	43 %

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	16.3 °C	5.7 °C	10.8 °C	24.6 °C	-2.5 °C	0	0	1
February	18.4 °C	6.7 °C	12.5 °C	27.8 °C	-2.8 °C	0	0	1
March	23.1 °C	10.2 °C	16.8 °C	37.1 °C	0.3 °C	9	2	0
April	29.7 °C	15.3 °C	22.8 °C	42.3 °C	4.0 °C	26	14	0
May	37.8 °C	21.2 °C	30.3 °C	47.8 °C	12.7 °C	31	30	0
June	44.1 °C	26.0 °C	36.0 °C	51.2 °C	20.0 °C	30	30	0
July	46.3 °C	29.1 °C	38.4 °C	52.1 °C	21.9 °C	31	31	0
August	46.1 °C	28.9 °C	38.1 °C	51.0 °C	23.4 °C	31	31	0
September	41.9 °C	24.7 °C	33.6 °C	48.1 °C	17.5 °C	30	30	0
October	34.8 °C	19.7 °C	27.3 °C	44.0 °C	12.2 °C	30	28	0
November	24.3 °C	12.6 °C	18.1 °C	33.7 °C	3.8 °C	13	2	0
December	18.3 °C	7.7 °C	12.7 °C	27.0 °C	-2.1 °C	1	0	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	129 mm	10	10 h/day	43 %	72 %	10 km/h
February	87 mm	8	11 h/day	39 %	68 %	11 km/h
March	109 mm	7	12 h/day	38 %	59 %	12 km/h
April	66 mm	5	13 h/day	38 %	49 %	13 km/h
May	9 mm	1	14 h/day	26 %	27 %	14 km/h
June	under 1 mm	0	14 h/day	4 %	14 %	14 km/h
July	under 1 mm	0	14 h/day	3 %	14 %	13 km/h
August	under 1 mm	0	13 h/day	3 %	15 %	13 km/h
September	1 mm	0	12 h/day	3 %	17 %	12 km/h
October	22 mm	2	11 h/day	19 %	28 %	12 km/h
November	85 mm	6	11 h/day	36 %	58 %	10 km/h
December	130 mm	8	10 h/day	43 %	72 %	9.5 km/h

How Dezful 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
Dezful	46 °C	5.7 °C	639 mm	232
Ahvaz · Iran	47 °C	7.5 °C	298 mm	251
Khorramabad · Iran	38 °C	-3.0 °C	573 mm	169
Al ‘Amārah · Iraq	47 °C	7.1 °C	206 mm	249
Borūjerd · Iran	35 °C	-5.2 °C	512 mm	145
Bandar-e Māhshahr · Iran	46 °C	8.2 °C	274 mm	251
Basrah · Iraq	47 °C	7.6 °C	156 mm	257

Where Dezful ranks

Ranking	Position	Value
The warmest places in Asia in July	4th of 50	46 °C
The warmest places in the world in July	4th of 50	46 °C
The warmest places in Asia in August	5th of 50	46 °C
The warmest places in the world in August	5th of 50	46 °C
The warmest places in Asia in June	6th of 50	44 °C
The warmest places in the world in June	6th of 50	44 °C

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

QuestionsCommon questions about Dezful’s climate

When is the best time to visit Dezful?

That depends on what you want, so the honest answer is a comparison rather than a single month. March, April, November 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 Dezful get?

In July, the warmest month, daily highs average 46 °C. About 198 days a year pass 30 °C. The highest value in the 1991–2020 record is 52 °C.

How cold does it get in winter?

Nights average 5.7 °C in January, the coldest month. A normal year has 2 nights below freezing.

Which month is wettest in Dezful?

December, averaging 130 mm over 8 days with rain. The driest month is July with 0 mm. The year as a whole averages 639 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 Dezful 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
Data point: 32.381°, 48.406° (the coordinates the reanalysis values are taken for)
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.