Karahrūd weather in December

In December, Karahrūd sees average daytime highs of 8°C and overnight lows near -3°C, with 31 mm of precipitation across 6.3 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 7°C by the end. The sky is clear or mostly clear about 49% 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 Karahrūd's 10th-clearest and 11th-windiest month. For the whole year in context, see Karahrūd's year-round climate.

Daytime high
10th warmest
Overnight low
-3°
3rd coldest
Precipitation
31 mm
6.3 wet days
Daylight
9 h 42 min
7:15 AM – 5:00 PM
Cloud cover
44%
10th clearest
Wind
7 km/h
11th windiest
Solar energy
3.01 kWh/m²
Travel score
1.3
out of 10

Karahrūd is neighborhood in Arak, 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 7°C by the end.

A typical December day in Karahrūd reaches about 8°C in the afternoon and slips back to -3°C overnight — a 10°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
29-1
39-1
49-1
59-2
69-2
78-2
88-2
98-2
108-2
118-2
128-2
138-3
148-3
158-3
167-3
177-3
187-3
197-3
207-3
217-3
227-3
237-3
247-4
257-4
267-4
277-4
287-4
297-4
307-4
316-4

How December really feels in Karahrūd

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.

Karahrūd 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°326.55.5100.1
Feb / -4°336.54.510.71.1
Mar12° / 498.22.911.73.5
Apr17° / 4490.312.85.7
May23° / 11°246.4013.77.6
Jun30° / 16°41.1014.26.6
Jul33° / 19°10.40144.4
Aug33° / 18°10.2013.35.0
Sep28° / 13°10.4012.27.9
Oct21° / 143.8011.18.0
Nov13° / 306.1110.24.0
Dec / -3°316.33.89.81.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26436
36436
46337
56337
66238
76238
86238
96139
106238
116238
126238
136337
146436
156436
166436
176535
186634
196634
206634
216733
226832
236832
246832
256832
266931
276931
286931
296931
306931
316931

Chance of precipitation in December

Any precipitationSnow

Karahrūd gets around 31 mm of rain and snow over 6.3 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 20% and peaks near 25% on the wettest days, and about 4 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12411
22412
32413
42413
52513
62514
72514
82514
92414
102414
112314
122214
132213
142113
152013
162012
171912
181812
191811
201711
211711
221611
231610
241510
251510
261510
271510
281510
291611
301611
311612

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.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 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
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 7:04 AM to 7:22 AM, and sunset from 4:58 PM to 5:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:044:58
29.97:054:58
39.97:064:58
49.97:074:58
59.87:084:58
69.87:084:58
79.87:094:58
89.87:104:58
99.87:114:58
109.87:114:58
119.87:124:59
129.87:134:59
139.87:134:59
149.87:144:59
159.77:155:00
169.77:155:00
179.77:165:00
189.77:175:01
199.77:175:01
209.77:185:01
219.77:185:02
229.77:195:02
239.77:195:03
249.77:195:03
259.77:205:04
269.77:205:04
279.77:215:05
289.77:215:05
299.77:215:06
309.87:225:07
319.87:225:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.01 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.01 kWh/m² to a high of 7.91 kWh/m² in June across the year — December's 3.01 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.0Moderate
53.0Moderate
63.0Moderate
73.0Moderate
83.0Moderate
93.0Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
233.0Moderate
243.1Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.1Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in December

Is December a good time to visit Karahrūd?

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

1.3
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 Karahrūd.

What to pack for Karahrūd in December

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

In December, Karahrūd sees daytime highs around 8°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 Karahrūd 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 Karahrūd peaks around July 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 20UV 12Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar6High
Apr7Very high
May10Extreme
Jun10Extreme
Jul12Extreme
Aug11Extreme
Sep8Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Karahrūd 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 Karahrūd is worst in April — around 37 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (December, 20 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1837 µg/m³Dec 1320 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb26Moderate
Mar32Moderate
Apr37Poor
May34Moderate
Jun26Moderate
Jul28Moderate
Aug22Moderate
Sep24Moderate
Oct24Moderate
Nov21Moderate
Dec20Moderate
Location & terrain

Where is Karahrūd?

Karahrūd sits at 34.1°N, 49.6°E, 1,810 m above sea level, in Iran. The nearest listed city is Arāk, 6.0 km away.

Topography around Karahrūd

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

Within 3 km, the terrain around Karahrūd has significant variations in elevation — a maximum elevation change of 576 m around an average of 1,907 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,422 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,985 m.

The land around Karahrūd is covered by grassland (33%), bare terrain (29%) and artificial surfaces (23%) within 3 km, cropland (33%), grassland (31%) and bare terrain (27%) within 16 km, and cropland (39%), bare terrain (30%) and grassland (29%) within 80 km.

3 km
576 m
16 km
1,422 m
80 km
1,985 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Arāk 6.0 km · Mahājerān 19 km · Shāzand 26 km · Khomeyn 62 km · Aznā 69 km · Alīgūdarz 73 km · Maḩallāt 76 km · Tafresh 78 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 Karahrūd (34.0609°, 49.6446°, elevation 1,810 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).