Iran · 1991–2020

Best time to visit
Arāk.

October leads for comfortable weather in Arāk: typically 23.7°C by day, 8.2°C at night, with 17 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high23.7°C

Typical low8.2°C

Rain in October17 mm

Comfort

October

October · May · September

87climate match

Beach

July

July · June · August

76climate match

Outdoors

April

April · October · May

86climate match

The weakest month is January, scoring 5 against October’s 87 — days reach only 5.3°C, 19° below the 24°C the score treats as ideal, and nights drop to -6.2°C.

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

55.3° / -6.2°

Feb

179.2° / -3.1°

Mar

4415.4° / 1.9°

Apr

6720.3° / 7°

May

8426.1° / 11.1°

Jun

6733.2° / 16.5°

Jul

5236° / 19.9°

Aug

5735° / 18.4°

Sep

7431° / 13.6°

Oct

8723.7° / 8.2°

Nov

4113.8° / 1.6°

Dec

158.5° / -2.6°

Monthly climate evidence for Arāk — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.3°C	-6.2°C	33 mm	5	10 h 06	5	Good coverage
February	9.2°C	-3.1°C	38 mm	4.6	10 h 54	17	Good coverage
March	15.4°C	1.9°C	50 mm	5.6	11 h 52	44	Good coverage
April	20.3°C	7°C	62 mm	6.3	12 h 59	67	Good coverage
May	26.1°C	11.1°C	28 mm	4.6	13 h 55	84	Good coverage
June	33.2°C	16.5°C	33 mm	1.2	14 h 25	67	Good coverage
July	36°C	19.9°C	8 mm	0.7	14 h 13	52	Good coverage
August	35°C	18.4°C	2 mm	0.4	13 h 25	57	Good coverage
September	31°C	13.6°C	3 mm	0.3	12 h 21	74	Good coverage
October	23.7°C	8.2°C	17 mm	2	11 h 16	87	Good coverage
November	13.8°C	1.6°C	29 mm	4.5	10 h 20	41	Good coverage
December	8.5°C	-2.6°C	31 mm	4.7	9 h 53	15	Good coverage

Records at ARAK, 1973–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.2°C13 Jan 2003	-32.7°C18 Jan 2008	78 mm5 Jan 1996	116 mm1996 · driest 1 mm in 2015	30
February	23.6°C22 Feb 2016	-25.2°C5 Feb 2008	102 mm25 Feb 1991	208 mm1991 · driest 0 mm in 2000	32
March	27.8°C29 Mar 2018	-22.0°C12 Mar 1992	46 mm13 Mar 2005	145 mm2019 · driest 0 mm in 2000	31
April	31.0°C27 Apr 2008	-11.2°C1 Apr 2004	107 mm25 Apr 2007	175 mm2007 · driest 1 mm in 2000	32
May	37.0°C29 May 1973	0.1°C5 May 2003	36 mm6 May 2017	94 mm2018 · driest 0 mm in 2000	34
June	40.2°C30 Jun 2015	9.8°C3 Jun 2009	117 mm10 Jun 2012	500 mm2010 · driest 0 mm in 2014	35
July	42.7°C21 Jul 2024	9.7°C29 Jul 2007	60 mm14 Jul 2010	110 mm2010 · driest 0 mm in 2018	36
August	41.0°C13 Aug 1977	10.8°C30 Aug 2011	3 mm28 Aug 2010	6 mm2010 · driest 0 mm in 2016	35
September	38.0°C7 Sep 1976	6.0°C2 Sep 1979	50 mm10 Sep 2007	50 mm2007 · driest 0 mm in 2019	32
October	31.5°C1 Oct 2022	-1.2°C28 Oct 2004	24 mm16 Oct 2006	54 mm2006 · driest 0 mm in 2005	32
November	25.0°C7 Nov 2007	-14.0°C24 Nov 2016	53 mm8 Nov 1999	97 mm2018 · driest 1 mm in 1991	31
December	21.8°C24 Dec 2017	-19.5°C29 Dec 1990	25 mm2 Dec 2016	106 mm2016 · driest 0 mm in 2014	33

Typical days per month at ARAK, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	17	<1
February	0	0	14	<1
March	<1	0	7	1
April	3	<1	<1	2
May	19	5	0	<1
June	27	24	0	<1
July	29	29	0	<1
August	29	29	0	0
September	27	19	0	<1
October	13	<1	0	<1
November	0	0	6	<1
December	0	0	16	1

How often, not how much — every day in ARAK’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	0%	16%	3%	13%	0.3–10.2°C
February	<1%	18%	4%	15%	4.0–12.5°C
March	17%	17%	5%	15%	12.5–18.0°C
April	55%	18%	5%	21%	18.5–23.3°C
May	84%	14%	2%	8%	24.6–28.3°C
June	97%	3%	1%	1%	32.2–34.9°C
July	98%	2%	<1%	<1%	34.6–37.7°C
August	99%	1%	<1%	0%	34.4–37.2°C
September	99%	<1%	<1%	0%	30.2–32.7°C
October	84%	6%	1%	8%	22.5–25.8°C
November	13%	15%	2%	16%	11.8–17.3°C
December	<1%	15%	3%	13%	5.9–12.3°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 143127
NOAA station: IRM00040769 · ARAK
Station distance: 14.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 34.09°, 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 ARAK is what differs

Karahrūd→Shāzand→Mahājerān→Senjān→Shahbāz→Farmahīn→

Or put two places side by side: Arāk vs Karahrūd

Best time to visitArāk.