Iran · 1991–2020

Best time to visit
Ḩasanābād.

October leads for comfortable weather in Ḩasanābād: typically 25°C by day, 15°C at night, with 13 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high25°C

Typical low15°C

Rain in October13 mm

Comfort

October

October · April · May

97climate match

Beach

September

September · May · June

91climate match

Outdoors

April

April · March · November

85climate match

The weakest month is January, scoring 24 against October’s 97 — days reach only 8.9°C, 15° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

248.9° / 0.8°

Feb

3511.5° / 2.9°

Mar

6117.2° / 7.6°

Apr

8822.7° / 12.3°

May

7928.8° / 17.7°

Jun

5134.8° / 22.7°

Jul

3837.2° / 25.1°

Aug

4435.9° / 24.3°

Sep

6332° / 20.8°

Oct

9725° / 15°

Nov

5916° / 7.4°

Dec

3410.7° / 3.1°

Monthly climate evidence for Ḩasanābād — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	8.9°C	0.8°C	35 mm	4.1	10 h 01	24	Good coverage
February	11.5°C	2.9°C	36 mm	5.4	10 h 51	35	Good coverage
March	17.2°C	7.6°C	44 mm	5.6	11 h 52	61	Good coverage
April	22.7°C	12.3°C	37 mm	5.4	13 h 02	88	Good coverage
May	28.8°C	17.7°C	12 mm	3.4	14 h 00	79	Good coverage
June	34.8°C	22.7°C	9 mm	1	14 h 32	51	Good coverage
July	37.2°C	25.1°C	7 mm	0.6	14 h 19	38	Good coverage
August	35.9°C	24.3°C	6 mm	0.4	13 h 29	44	Good coverage
September	32°C	20.8°C	1 mm	0.3	12 h 21	63	Good coverage
October	25°C	15°C	13 mm	2.1	11 h 14	97	Good coverage
November	16°C	7.4°C	33 mm	4.5	10 h 15	59	Good coverage
December	10.7°C	3.1°C	31 mm	4.3	9 h 47	34	Good coverage

Records at TEHRAN-MEHRABAD, 1954–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.4°C5 Jan 2015	-13.0°C1 Jan 1973	99 mm3 Jan 1991	109 mm1991 · driest 0 mm in 2000	40
February	24.4°C23 Feb 2016	-9.0°C3 Feb 1974	101 mm12 Feb 2013	130 mm2013 · driest 2 mm in 2001	41
March	30.3°C29 Mar 2018	-9.0°C6 Mar 1980	105 mm16 Mar 1992	147 mm1992 · driest 0 mm in 2008	42
April	33.0°C27 Apr 2008	-2.6°C1 Apr 2014	38 mm3 Apr 2002	102 mm2003 · driest 0 mm in 2001	41
May	37.3°C21 May 2025	0.0°C19 May 2010	19 mm8 May 1996	41 mm1992 · driest 0 mm in 1990	46
June	42.2°C30 Jun 2015	12.4°C15 Jun 2011	70 mm24 Jun 2010	170 mm2010 · driest 0 mm in 2001	42
July	43.0°C6 Jul 1975	13.9°C13 Jul 1968	70 mm15 Jul 2010	120 mm2010 · driest 0 mm in 1994	46
August	42.4°C8 Aug 2024	13.9°C27 Aug 1957	80 mm26 Aug 1994	80 mm1994 · driest 0 mm in 1990	47
September	39.0°C6 Sep 1979	10.6°C30 Sep 1955	17 mm28 Sep 2024	24 mm2024 · driest 0 mm in 2020	43
October	33.4°C3 Oct 2002	2.0°C20 Oct 1993	49 mm29 Oct 2011	106 mm2011 · driest 0 mm in 2005	42
November	26.6°C6 Nov 2012	-7.2°C25 Nov 2016	61 mm21 Nov 2000	79 mm1994 · driest 0 mm in 2017	43
December	21.0°C7 Dec 2005	-11.5°C12 Dec 2003	92 mm2 Dec 1999	102 mm1999 · driest 0 mm in 2023	42

Typical days per month at TEHRAN-MEHRABAD, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	9	<1
February	0	0	5	<1
March	1	<1	1	<1
April	8	1	<1	<1
May	22	11	<1	<1
June	25	24	0	<1
July	28	28	0	<1
August	27	26	0	0
September	26	21	0	0
October	15	3	0	<1
November	<1	0	<1	1
December	0	0	4	<1

How often, not how much — every day in TEHRAN-MEHRABAD’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	<1%	13%	3%	10%	4.4–11.1°C
February	1%	18%	3%	16%	8.5–13.9°C
March	26%	18%	4%	21%	14.7–19.5°C
April	73%	16%	3%	13%	20.5–26.0°C
May	88%	11%	<1%	7%	26.7–30.7°C
June	98%	3%	<1%	<1%	33.0–36.3°C
July	98%	2%	<1%	0%	35.8–38.3°C
August	99%	1%	<1%	<1%	34.6–37.1°C
September	99%	1%	<1%	<1%	30.6–33.2°C
October	87%	6%	1%	8%	23.5–26.8°C
November	21%	15%	3%	17%	14.0–18.4°C
December	1%	14%	3%	12%	8.8–13.0°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 131831
NOAA station: IR000407540 · TEHRAN-MEHRABAD
Station distance: 35.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 35.37°, 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.

These places read the same station, so their numbers are identical — distance from TEHRAN-MEHRABAD is what differs

Tehran→Karaj→Eslamshahr→Shahrīār→Qods→Qarchak→

Or put two places side by side: Ḩasanābād vs Tehran

Best time to visitḨasanābād.