Khomeyn weather in December

In December, Khomeyn sees average daytime highs of 7°C and overnight lows near -3°C, with 28 mm of precipitation across 5.8 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 9°C in the first days to 6°C by the end. The sky is clear or mostly clear about 50% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of December to 9 h 48 min by month's end. Set against the rest of the year, December is Khomeyn's 9th-clearest and 12th-windiest month. For the whole year in context, see Khomeyn's year-round climate.

Daytime high
10th warmest
Overnight low
-3°
3rd coldest
Precipitation
28 mm
5.8 wet days
Daylight
9 h 48 min
7:12 AM – 4:59 PM
Cloud cover
44%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
3.09 kWh/m²
Travel score
1.2
out of 10

Khomeyn is city in Markazi Province, Iran.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 9°C in the first days to 6°C by the end.

A typical December day in Khomeyn reaches about 7°C in the afternoon and slips back to -3°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 2°C and 13°C. Set against its neighbours, December runs about 5°C cooler than November and about 3°C warmer than January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
19-1
29-2
39-2
49-2
58-2
68-2
78-2
88-2
98-3
108-3
118-3
128-3
137-3
147-3
157-3
167-3
177-3
187-3
197-4
207-4
217-4
227-4
237-4
247-4
257-4
267-4
277-4
287-4
296-4
306-4
316-4

How December really feels in Khomeyn

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Khomeyn weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°306.15.4100.1
Feb / -4°326.34.210.71.0
Mar12° / 437.5311.73.4
Apr17° / 378.30.312.85.8
May23° / 11°205.8013.77.7
Jun30° / 16°41.1014.26.6
Jul33° / 19°10.30144.4
Aug32° / 18°10.2013.25.0
Sep28° / 13°10.5012.28.0
Oct21° / 113.3011.28.1
Nov13° / 255.10.910.34.0
Dec / -3°285.83.79.81.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26535
36535
46436
56436
66337
76238
86238
96238
106238
116238
126337
136436
146436
156436
166436
176535
186535
196535
206535
216634
226634
236733
246733
256832
266832
276832
286832
296832
306832
316832

Chance of precipitation in December

Any precipitationSnow

Khomeyn gets around 28 mm of rain and snow over 5.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 18% and peaks near 23% on the wettest days, and about 4 days bring snow. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
12111
22112
32212
42213
52213
62314
72314
82314
92314
102214
112214
122113
132113
142013
151912
161912
171812
181711
191711
201611
211510
221510
231410
24149
25149
26149
271410
281410
291510
301510
311511

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 7 km/h in December, the calmest month.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 54 min at the start of December to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:02 AM to 7:19 AM, and sunset from 4:57 PM to 5:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:024:57
29.97:024:57
39.97:034:57
49.97:044:57
59.97:054:57
69.97:064:57
79.87:064:57
89.87:074:57
99.87:084:58
109.87:094:58
119.87:094:58
129.87:104:58
139.87:114:58
149.87:114:59
159.87:124:59
169.87:124:59
179.87:135:00
189.87:145:00
199.87:145:00
209.87:155:01
219.87:155:01
229.87:165:02
239.87:165:02
249.87:175:03
259.87:175:03
269.87:175:04
279.87:185:04
289.87:185:05
299.87:185:05
309.87:195:06
319.87:195:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.09 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.09 kWh/m² to a high of 7.9 kWh/m² in June across the year — December's 3.09 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.1Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.2Moderate
293.2Moderate
303.2Moderate
313.2Moderate
Planning a trip in December

Is December a good time to visit Khomeyn?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.2
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Khomeyn.

What to pack for Khomeyn in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Khomeyn sees daytime highs around 7°C and nights near -3°C. Pack a warm layer. Worth having: a heavy coat. About 6 days see rain.

a warm layera heavy coat

UV index in Khomeyn in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Khomeyn peaks around July 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 21UV 11Jan 10UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar7High
Apr7Very high
May11Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct7Very high
Nov4Moderate
Dec3Moderate

Air quality in Khomeyn in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Khomeyn is worst in April — around 39 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (August, 25 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1939 µg/m³Aug 1825 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb30Moderate
Mar34Moderate
Apr39Poor
May37Poor
Jun29Moderate
Jul31Moderate
Aug25Moderate
Sep29Moderate
Oct28Moderate
Nov27Moderate
Dec26Moderate
Location & terrain

Where is Khomeyn?

Khomeyn sits at 33.6°N, 50.1°E, 1,809 m above sea level, in Iran. The nearest listed city is Golpāyegān, 28 km away.

Topography around Khomeyn

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Khomeyn.

Within 3 km, the terrain around Khomeyn has only modest variations in elevation — a maximum elevation change of 232 m around an average of 1,819 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,403 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,746 m.

The land around Khomeyn is covered by cropland (41%) and artificial surfaces (35%) within 3 km, cropland (56%) and bare terrain (23%) within 16 km, and bare terrain (47%), cropland (27%) and grassland (24%) within 80 km.

3 km
232 m
16 km
1,403 m
80 km
2,746 m
grasslandcroplandartificial surfacesbare terrain
December weather nearby: Golpāyegān 28 km · Alīgūdarz 44 km · Maḩallāt 46 km · Khānsār 51 km · Aznā 61 km · Arāk 62 km · Karahrūd 62 km · Delījān 68 km

Iran travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 352% of US
price level, 2025
GDP per capita
$3,924
2025
Happiness
5.2 / 10
World Happiness, 2025
Safe drinking water
94%
of population, 2024
Homicide rate
2.4
per 100k, 2014
Road deaths
21.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 492
Religion
Muslim 99%Christian 1%Baha'i 0%agnostic 0%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Khomeyn (33.6389°, 50.08°, elevation 1,809 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).