Mahājerān weather in December

In December, Mahājerān sees average daytime highs of 7°C and overnight lows near -3°C, with 35 mm of precipitation across 6.4 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 46% 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 Mahājerān's 9th-clearest and 12th-windiest month. For the whole year in context, see Mahājerān's year-round climate.

Daytime high
10th warmest
Overnight low
-3°
3rd coldest
Precipitation
35 mm
6.4 wet days
Daylight
9 h 42 min
7:16 AM – 5:01 PM
Cloud cover
46%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
2.99 kWh/m²
Travel score
1.1
out of 10

Mahājerān 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 Mahājerān reaches about 7°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 12°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
58-2
68-2
78-2
88-2
98-2
108-2
118-2
127-2
137-3
147-3
157-3
167-3
177-3
187-3
197-3
207-3
217-3
227-3
237-3
247-4
257-4
266-4
276-4
286-4
296-4
306-4
316-4

How December really feels in Mahājerān

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.

Mahājerān 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°387.26.8100.0
Feb / -4°387.35.910.70.7
Mar11° / 559.1411.73.1
Apr17° / 458.90.412.85.6
May23° / 10°235.9013.77.7
Jun30° / 16°30.8014.26.9
Jul33° / 19°10.20144.6
Aug33° / 18°10.3013.35.1
Sep28° / 13°10.3012.28.0
Oct21° / 143.5011.18.0
Nov13° / 346.41.410.23.9
Dec / -3°356.44.89.81.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26535
36436
46337
56337
66337
76238
86139
96139
106139
116139
126238
136238
146238
156337
166337
176337
186436
196535
206535
216535
226634
236634
246733
256733
266733
276733
286733
296733
306733
316733

Chance of precipitation in December

Any precipitationSnow

Mahājerān gets around 35 mm of rain and snow over 6.4 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 21% and peaks near 25% on the wettest days, and about 5 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12414
22415
32415
42416
52516
62517
72517
82517
92417
102417
112317
122317
132217
142216
152116
162116
172015
181915
191915
201814
211814
221714
231714
241713
251613
261613
271613
281614
291714
301714
311715

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 6 km/h in December, the calmest month.

Across December, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 7:05 AM to 7:23 AM, and sunset from 4:59 PM to 5:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:054:59
29.97:064:59
39.97:074:59
49.97:084:59
59.87:084:59
69.87:094:59
79.87:104:59
89.87:114:59
99.87:114:59
109.87:124:59
119.87:134:59
129.87:145:00
139.87:145:00
149.87:155:00
159.77:165:00
169.77:165:01
179.77:175:01
189.77:175:01
199.77:185:02
209.77:185:02
219.77:195:03
229.77:195:03
239.77:205:04
249.77:205:04
259.77:215:05
269.77:215:05
279.77:215:06
289.77:225:06
299.77:225:07
309.87:225:08
319.87:235:08

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.99 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.99 kWh/m² to a high of 7.93 kWh/m² in June across the year — December's 2.99 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.0Moderate
33.0Moderate
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
243.0Moderate
253.0Moderate
263.0Moderate
273.1Moderate
283.1Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in December

Is December a good time to visit Mahājerān?

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

1.1
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 Mahājerān.

What to pack for Mahājerān in December

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

In December, Mahājerān 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 Mahājerān 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 Mahājerān 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 Mahājerān 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 Mahājerān 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 Mahājerān?

Mahājerān sits at 34.1°N, 49.4°E, 1,919 m above sea level, in Iran. The nearest listed city is Shāzand, 14 km away.

Topography around Mahājerān

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

Within 3 km, the terrain around Mahājerān has significant variations in elevation — a maximum elevation change of 530 m around an average of 1,964 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,421 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,669 m.

The land around Mahājerān is covered by cropland (35%), bare terrain (24%) and grassland (22%) within 3 km, cropland (40%), grassland (32%) and bare terrain (22%) within 16 km, and cropland (43%), grassland (31%) and bare terrain (24%) within 80 km.

3 km
530 m
16 km
1,421 m
80 km
2,669 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Shāzand 14 km · Karahrūd 19 km · Arāk 25 km · Malāyer 63 km · Borūjerd 65 km · Aznā 66 km · Dorūd 71 km · Khomeyn 75 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 Mahājerān (34.0504°, 49.435°, elevation 1,919 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).