Iran · 1991–2020

Best time to visit
Zanjan

For Zanjan, May has the most comfortable weather in our climate comparison. Typical daytime highs are 23.6°C, nights average 7.8°C, and rainfall totals about 37 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.

Best all-round monthMay

Typical daytime high23.6°C

Typical night-time low7.8°C

May rainfall37 mm

Overall comfort

May

Other strong months: June and September

83/100 weather score

Outdoor sightseeing

October

Other strong months: May and April

88/100 weather score

Make the answer personal

Choose the weather
that suits you.

Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.

Daytime high: at least 18°CDaytime high: at most 28°CMonthly rain: no more than 100 mmWet days: no more than 10

3 months fit your choices for Zanjan

April18°C day · 48 mm rain · 7.2 wet days

May23.6°C day · 37 mm rain · 6 wet days

October21.4°C day · 21 mm rain · 3.4 wet days

January has the lowest comfort score at 5 out of 100, compared with May at 83. The main reason is that days reach only 4.6°C, 19° below the 24°C the score treats as ideal, and nights drop to -7.4°C.

Quick answers

Planning a trip to Zanjan?

These answers come from the same measured monthly climate record shown on this page.

When is the best time to visit Zanjan?

May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 23.6°C and 37 mm of rain.

What is the hottest month in Zanjan?

July is hottest in this record, with a typical daytime high of 32.7°C and a night-time low of 15.3°C.

Which month has the least rain?

August and September have the lowest monthly rainfall total at 4 mm.

Is this a weather forecast?

No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.

Month by month

See how the weather
changes through the year.

The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.

54.6° / -7.4°

66.8° / -5°

3112.7° / -1.3°

5518° / 4°

8323.6° / 7.8°

7629.5° / 11.8°

7132.7° / 15.3°

7132.5° / 14.7°

7628.7° / 10.4°

7421.4° / 5.7°

3312.2° / 0.1°

87.3° / -4.9°

Monthly climate evidence for Zanjan — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4.6°C	-7.4°C	19 mm	4.1	9 h 54	5	Good coverage
February	6.8°C	-5°C	23 mm	4.8	10 h 47	6	Good coverage
March	12.7°C	-1.3°C	35 mm	5.3	11 h 51	31	Good coverage
April	18°C	4°C	48 mm	7.2	13 h 05	55	Good coverage
May	23.6°C	7.8°C	37 mm	6	14 h 06	83	Good coverage
June	29.5°C	11.8°C	19 mm	2.2	14 h 39	76	Good coverage
July	32.7°C	15.3°C	13 mm	1.9	14 h 26	71	Good coverage
August	32.5°C	14.7°C	4 mm	0.7	13 h 33	71	Good coverage
September	28.7°C	10.4°C	4 mm	0.8	12 h 22	76	Good coverage
October	21.4°C	5.7°C	21 mm	3.4	11 h 11	74	Good coverage
November	12.2°C	0.1°C	28 mm	4.8	10 h 10	33	Good coverage
December	7.3°C	-4.9°C	24 mm	4.2	9 h 40	8	Good coverage

Records at ZANJAN, 1973–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.9°C1 Jan 2018	-25.0°C1 Jan 2007	20 mm29 Jan 2019	43 mm2019 · driest 1 mm in 2003	27
February	20.8°C27 Feb 2016	-21.0°C12 Feb 2020	25 mm26 Feb 2008	65 mm2018 · driest 1 mm in 2000	28
March	27.2°C29 Mar 2018	-19.6°C2 Mar 1992	38 mm9 Mar 2023	89 mm2023 · driest 3 mm in 2002	28
April	30.0°C27 Apr 2008	-10.7°C4 Apr 2007	37 mm6 Apr 2011	107 mm2010 · driest 7 mm in 2021	29
May	34.4°C31 May 2024	-2.1°C18 May 2003	45 mm15 May 2007	84 mm2007 · driest 2 mm in 2001	29
June	38.2°C29 Jun 2015	1.6°C14 Jun 2000	63 mm24 Jun 2010	184 mm2010 · driest 0 mm in 2005	29
July	40.5°C10 Jul 2015	8.4°C13 Jul 1991	60 mm15 Jul 2010	96 mm2010 · driest 0 mm in 2009	32
August	39.7°C1 Aug 2019	3.0°C23 Aug 2007	22 mm18 Aug 2009	22 mm2009 · driest 0 mm in 2019	30
September	37.5°C4 Sep 2024	0.8°C30 Sep 2009	13 mm6 Sep 2000	23 mm2000 · driest 0 mm in 2014	27
October	30.6°C9 Oct 2024	-4.0°C24 Oct 2005	50 mm15 Oct 2007	60 mm1999 · driest 0 mm in 2024	28
November	25.0°C1 Nov 2006	-15.2°C20 Nov 2001	29 mm27 Nov 2020	102 mm2020 · driest 0 mm in 2010	27
December	19.9°C3 Dec 2023	-24.8°C31 Dec 2006	34 mm6 Dec 2013	68 mm2013 · driest 1 mm in 2008	26

Typical days per month at ZANJAN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	16	<1
February	0	0	14	<1
March	<1	0	11	<1
April	1	<1	3	1
May	11	1	<1	1
June	22	13	0	<1
July	26	21	0	<1
August	26	21	0	<1
September	22	11	0	<1
October	7	0	1	<1
November	0	0	9	<1
December	0	0	16	<1

How often different weather occurs at ZANJAN, based on its daily record
Month	Dry days reaching 20°C	Wet days	Days with heavy rain	Weeks with 3+ wet days	Typical high by year
January	0%	14%	1%	12%	1.6–8.6°C
February	<1%	18%	2%	16%	3.6–10.4°C
March	9%	19%	3%	24%	10.1–15.9°C
April	40%	22%	4%	27%	15.4–21.2°C
May	72%	19%	4%	20%	21.9–27.1°C
June	92%	7%	1%	4%	28.0–32.8°C
July	95%	6%	<1%	5%	30.7–34.5°C
August	97%	3%	<1%	<1%	30.9–35.0°C
September	96%	2%	<1%	2%	27.1–30.9°C
October	66%	11%	1%	15%	19.7–23.4°C
November	4%	15%	2%	15%	10.6–15.1°C
December	0%	14%	2%	11%	4.4–10.9°C

A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.

The evidence behind this page

Where these figures
come from.

Place identity: GeoNames 111453
NOAA station: IRM00040729 · ZANJAN
Station distance: 16.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 36.68°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

Next step

Choose your month.
Then plan the details.

The weather comparison for Zanjan is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.

How travel partnerships will work

Keep exploring

Same climate evidence,
different places.

These places read the same station, so their climate numbers are identical. Their setting, population and distance from ZANJAN are not.

ZanjanDīzajābādMay is the strongest comfort month on this shared record · population 4,157Explore the year ZanjanJūqīnMay is the strongest comfort month on this shared record · population 3,129Explore the year ZanjanDo AsbMay is the strongest comfort month on this shared record · population 2,726Explore the year ZanjanZarrīnābādMay is the strongest comfort month on this shared record · population 2,374Explore the year ZanjanĪchMay is the strongest comfort month on this shared record · population 2,086Explore the year ZanjanShīvehMay is the strongest comfort month on this shared record · population 1,439Explore the year

Or put two places side by side: Zanjan vs Dīzajābād

Best time to visitZanjan

May