Shahrak-e ‘Alā’īn weather in December

In December, Shahrak-e ‘Alā’īn sees average daytime highs of 10°C and overnight lows near 1°C, with 40 mm of precipitation across 7.5 wet days and about 9.6 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 11°C in the first days to 9°C by the end. The sky is clear or mostly clear about 56% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of December to 9 h 36 min by month's end. Set against the rest of the year, December is Shahrak-e ‘Alā’īn's 9th-clearest and 12th-windiest month. For the whole year in context, see Shahrak-e ‘Alā’īn's year-round climate.

Daytime high
10°
11th warmest
Overnight low
3rd coldest
Precipitation
40 mm
7.5 wet days
Daylight
9 h 36 min
7:12 AM – 4:48 PM
Cloud cover
40%
9th clearest
Wind
5 km/h
12th windiest
Solar energy
2.73 kWh/m²
Travel score
2.7
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 11°C in the first days to 9°C by the end.

A typical December day in Shahrak-e ‘Alā’īn reaches about 10°C in the afternoon and slips back to 1°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 15°C. Set against its neighbours, December runs about 6°C cooler than November and about 2°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1123
2123
3123
4112
5112
6112
7112
8112
9112
10112
11102
12101
13101
14101
15101
16101
17101
18101
19101
20101
21101
22101
23100
24100
25100
26100
27100
28100
2990
3090
3190

How December really feels in Shahrak-e ‘Alā’īn

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 20 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
20
wind chill below the day's low

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

Shahrak-e ‘Alā’īn weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°387.62.69.91.8
Feb11° / 397.81.410.73.0
Mar16° / 508.80.611.75.5
Apr23° / 11°366.6012.97.4
May29° / 17°132.7013.96.6
Jun35° / 23°20.5014.43.2
Jul38° / 26°10.3014.21.5
Aug37° / 24°10.2013.32.3
Sep32° / 19°10.3012.25.4
Oct25° / 13°142.6011.18.4
Nov16° / 406.70.310.15.6
Dec10° / 407.519.62.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26634
36535
46436
56337
66337
76238
86238
96238
106238
116337
126337
136337
146337
156535
166535
176634
186733
196832
206931
216931
227129
237129
247228
257228
267228
277327
287228
297228
307228
317228

Chance of precipitation in December

Any precipitationSnow

Shahrak-e ‘Alā’īn gets around 40 mm of rain and snow over 7.5 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 24% and peaks near 27% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1252
2252
3262
4262
5263
6273
7273
8273
9273
10274
11274
12274
13274
14274
15274
16264
17264
18254
19254
20244
21234
22234
23224
24214
25214
26214
27204
28204
29205
30215
31215

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 5 km/h in December, the calmest month.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 48 min at the start of December to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:01 AM to 7:19 AM, and sunset from 4:47 PM to 4:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:014:47
29.87:024:47
39.77:034:47
49.77:034:47
59.77:044:47
69.77:054:47
79.77:064:47
89.77:074:47
99.77:074:47
109.67:084:47
119.67:094:47
129.67:104:47
139.67:104:48
149.67:114:48
159.67:124:48
169.67:124:48
179.67:134:49
189.67:134:49
199.67:144:50
209.67:144:50
219.67:154:50
229.67:154:51
239.67:164:51
249.67:164:52
259.67:174:52
269.67:174:53
279.67:174:54
289.67:184:54
299.67:184:55
309.67:184:55
319.67:194:56

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.73 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.73 kWh/m² to a high of 7.85 kWh/m² in June across the year — December's 2.73 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.8Moderate
42.7Moderate
52.7Moderate
62.7Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.9Moderate
312.9Moderate
Planning a trip in December

Is December a good time to visit Shahrak-e ‘Alā’īn?

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

2.7
Sightseeing
9th-best month of the year
0.0
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Shahrak-e ‘Alā’īn.

What to pack for Shahrak-e ‘Alā’īn in December

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

In December, Shahrak-e ‘Alā’īn sees daytime highs around 10°C and nights near 1°C. Pack a warm layer. About 8 days see rain.

a warm layer

UV index in Shahrak-e ‘Alā’īn in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Shahrak-e ‘Alā’īn peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highHighModerateJul 17UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May9Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep7Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Shahrak-e ‘Alā’īn 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 Shahrak-e ‘Alā’īn is worst in December — around 149 µg/m³ PM2.5 (unhealthy), about 3.5× the cleanest month (July, 42 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 22148 µg/m³Jul 1943 µg/m³
PM2.5 (µg/m³)Level
Jan145Unhealthy
Feb126Unhealthy
Mar95Unhealthy
Apr88Unhealthy
May72Unhealthy
Jun52Poor
Jul42Poor
Aug47Poor
Sep62Unhealthy
Oct86Unhealthy
Nov123Unhealthy
Dec149Unhealthy
Location & terrain

Where is Shahrak-e ‘Alā’īn?

Shahrak-e ‘Alā’īn sits at 35.6°N, 51.5°E, 1,048 m above sea level, in Iran. The nearest listed city is Bāqershahr, 7.0 km away.

Topography around Shahrak-e ‘Alā’īn

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Shahrak-e ‘Alā’īn.

Within 3 km, the terrain around Shahrak-e ‘Alā’īn has significant variations in elevation — a maximum elevation change of 425 m around an average of 1,062 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,187 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,817 m.

The land around Shahrak-e ‘Alā’īn is covered by artificial surfaces (39%) and cropland (34%) within 3 km, artificial surfaces (36%), cropland (28%) and bare terrain (20%) within 16 km, and bare terrain (47%) and grassland (32%) within 80 km.

3 km
425 m
16 km
1,187 m
80 km
4,817 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Bāqershahr 7.0 km · Morteẕá Gerd 10 km · Tehran 13 km · Chahār Dangeh 13 km · Vaḩīdīyeh 15 km · Ferūnābād 17 km · Qīāmdasht 19 km · Eslamshahr 20 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 Shahrak-e ‘Alā’īn (35.5823°, 51.4556°, elevation 1,048 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).