Qazvin climate

Name: Qazvin
Address: IR

Qazvin is warmest in August, with average highs of 33 °C, and coldest in January, when nights average -4.0 °C. April is the wettest month (72 mm) and August the driest (3.0 mm). Figures are 1991–2020 climate normals.

Across a full year Qazvin averages 428 mm of rain, 134 days above 25 °C and 84 days below freezing.

Iran · population 333,635 · 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 August 33 °C
Coldest month January -4.0 °C
Driest month August 3 mm
Wettest month April 72 mm
Least cloud August 13 % cloud
Hottest on record July 41 °C
Coldest on record January -19 °C

What to expectQazvin through the year

Qazvin has a clear annual cycle: average daily highs run from 4.3 °C in January to 33 °C in August, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 134 days a year reach 25 °C, 75 of them reach 30 °C, 84 nights drop below freezing. The warmest reading in the 1991–2020 record is 41 °C, in July.

Rain is strongly seasonal. April averages 72 mm against 3 mm in August — 24 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	4.3 °C	47 mm	46 %
February	6.2 °C	55 mm	46 %
March	12.0 °C	72 mm	49 %
April	18.5 °C	72 mm	49 %
May	24.2 °C	31 mm	39 %
June	29.7 °C	7 mm	20 %
July	32.3 °C	4 mm	17 %
August	32.6 °C	3 mm	13 %
September	28.4 °C	4 mm	14 %
October	21.6 °C	30 mm	31 %
November	12.6 °C	56 mm	44 %
December	6.8 °C	48 mm	46 %

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	4.3 °C	-4.0 °C	-0.1 °C	14.7 °C	-19.4 °C	0	0	25
February	6.2 °C	-3.0 °C	1.5 °C	19.7 °C	-16.0 °C	0	0	21
March	12.0 °C	1.1 °C	6.5 °C	31.1 °C	-14.1 °C	0	0	12
April	18.5 °C	6.4 °C	12.5 °C	29.8 °C	-11.1 °C	2	0	2
May	24.2 °C	11.0 °C	17.7 °C	34.5 °C	-1.5 °C	13	2	0
June	29.7 °C	15.0 °C	22.4 °C	39.7 °C	6.7 °C	26	15	0
July	32.3 °C	17.7 °C	24.8 °C	41.0 °C	8.9 °C	30	22	0
August	32.6 °C	18.1 °C	25.0 °C	40.5 °C	10.6 °C	30	25	0
September	28.4 °C	15.1 °C	21.4 °C	36.1 °C	7.2 °C	24	11	0
October	21.6 °C	10.2 °C	15.5 °C	31.0 °C	-0.1 °C	7	0	0
November	12.6 °C	3.4 °C	7.6 °C	24.0 °C	-11.4 °C	0	0	5
December	6.8 °C	-1.4 °C	2.4 °C	18.6 °C	-15.9 °C	0	0	19

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	47 mm	8	10.0 h/day	46 %	66 %	11 km/h
February	55 mm	9	11 h/day	46 %	66 %	12 km/h
March	72 mm	11	12 h/day	49 %	62 %	14 km/h
April	72 mm	11	13 h/day	49 %	59 %	15 km/h
May	31 mm	7	14 h/day	39 %	56 %	15 km/h
June	7 mm	2	15 h/day	20 %	51 %	17 km/h
July	4 mm	1	14 h/day	17 %	53 %	17 km/h
August	3 mm	1	14 h/day	13 %	50 %	16 km/h
September	4 mm	1	12 h/day	14 %	48 %	15 km/h
October	30 mm	5	11 h/day	31 %	52 %	13 km/h
November	56 mm	8	10 h/day	44 %	62 %	12 km/h
December	48 mm	8	9.7 h/day	46 %	65 %	11 km/h

How Qazvin 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
Qazvin	33 °C	-4.0 °C	428 mm	134
Naz̧arābād · Iran	35 °C	-4.1 °C	356 mm	145
Karaj · Iran	35 °C	-6.0 °C	288 mm	147
Fardīs · Iran	35 °C	-5.6 °C	290 mm	151
Shahrīār · Iran	36 °C	-4.8 °C	291 mm	157
Rasht · Iran	28 °C	2.2 °C	1,534 mm	99

Where Qazvin ranks

Ranking	Position	Value
Places with the best weather in Asia in October	23rdof 50	97/100
Places with the best weather in the world in October	25thof 50	97/100
Places with the best weather in Asia in May	36thof 50	93/100

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

QuestionsCommon questions about Qazvin’s climate

When is the best time to visit Qazvin?

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

How hot does Qazvin get?

In August, the warmest month, daily highs average 33 °C. About 75 days a year pass 30 °C. The highest value in the 1991–2020 record is 41 °C.

How cold does it get in winter?

Nights average -4.0 °C in January, the coldest month. A normal year has 84 nights below freezing.

Which month is wettest in Qazvin?

April, averaging 72 mm over 11 days with rain. The driest month is August with 3 mm. The year as a whole averages 428 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 Qazvin 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.