Delījān weather in December

In December, Delījān sees average daytime highs of 8°C and overnight lows near -1°C, with 31 mm of precipitation across 6.9 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 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 Delījān's 10th-clearest and 12th-windiest month. For the whole year in context, see Delījān's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
3rd coldest
Precipitation
31 mm
6.9 wet days
Daylight
9 h 42 min
7:11 AM – 4:56 PM
Cloud cover
43%
10th clearest
Wind
6 km/h
12th windiest
Solar energy
3.02 kWh/m²
Travel score
1.5
out of 10

Delījān 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 7°C by the end.

A typical December day in Delījān reaches about 8°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 3°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)
191
290
390
490
590
690
790
880
980
108-1
118-1
128-1
138-1
148-1
158-1
168-1
178-1
188-1
198-1
208-1
218-2
228-2
237-2
247-2
257-2
267-2
277-2
287-2
297-2
307-2
317-2

How December really feels in Delījān

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.

Delījān 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 / -4°327.35.4100.2
Feb / -2°327.64.310.71.4
Mar13° / 459.22.611.73.8
Apr18° / 439.90.512.86.0
May24° / 14°277.20.113.77.5
Jun31° / 18°41.5014.26.1
Jul33° / 21°20.50144.4
Aug32° / 19°10.3013.35.2
Sep28° / 15°20.5012.27.9
Oct21° / 10°154.3011.18.0
Nov13° / 296.31.510.24.0
Dec / -1°316.94.29.81.5

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 16% of December, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46238
56238
66238
76238
86238
96337
106337
116337
126535
136535
146634
156634
166733
176733
186733
196832
206832
216931
226931
237030
247030
257030
267030
277129
287129
297129
307129
317129

Chance of precipitation in December

Any precipitationSnow

Delījān gets around 31 mm of rain and snow over 6.9 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 22% and peaks near 26% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12312
22313
32414
42414
52415
62515
72515
82515
92515
102615
112615
122515
132515
142515
152414
162414
172314
182314
192213
202113
212113
222012
232012
241912
251912
261911
271911
281911
291911
302012
312012

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 7:00 AM to 7:17 AM, and sunset from 4:54 PM to 5:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:004:54
29.97:014:54
39.97:024:54
49.97:024:54
59.87:034:54
69.87:044:54
79.87:054:54
89.87:064:54
99.87:064:54
109.87:074:54
119.87:084:55
129.87:084:55
139.87:094:55
149.87:104:55
159.87:104:56
169.77:114:56
179.77:124:56
189.77:124:57
199.77:134:57
209.77:134:57
219.77:144:58
229.77:144:58
239.77:154:59
249.77:154:59
259.77:165:00
269.77:165:00
279.77:165:01
289.77:175:01
299.87:175:02
309.87:175:03
319.87:175:03

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.02 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.02 kWh/m² to a high of 7.86 kWh/m² in June across the year — December's 3.02 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
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
223.1Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.1Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in December

Hazard calendar for Delījān

In seasonPeak

None of Delījān's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Delījān sees seasonal dust haze (July), heaviest in July.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Delījān?

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

1.5
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 Delījān.

What to pack for Delījān in December

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

In December, Delījān sees daytime highs around 8°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat. About 7 days see rain.

a warm layera heavy coat

UV index in Delījān 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 Delījān peaks around July 19 at about 12 (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 19UV 12Jan 10UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar6High
Apr7Very high
May10Extreme
Jun10Extreme
Jul12Extreme
Aug11Extreme
Sep8Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Delījān 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 Delījān is worst in April — around 42 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (August, 26 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1942 µg/m³Aug 1927 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb34Moderate
Mar38Poor
Apr42Poor
May40Poor
Jun31Moderate
Jul34Moderate
Aug26Moderate
Sep31Moderate
Oct31Moderate
Nov30Moderate
Dec29Moderate
Location & terrain

Where is Delījān?

Delījān sits at 34.0°N, 50.7°E, 1,522 m above sea level, in Iran. The nearest listed city is Maḩallāt, 23 km away.

Topography around Delījān

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

Within 3 km, the terrain around Delījān has only modest variations in elevation — a maximum elevation change of 109 m around an average of 1,522 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,408 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,795 m.

The land around Delījān is covered by bare terrain (53%) and cropland (29%) within 3 km, bare terrain (84%) within 16 km, and bare terrain (79%) within 80 km.

3 km
109 m
16 km
1,408 m
80 km
2,795 m
shrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Maḩallāt 23 km · Shahrak-e Pardīsān 64 km · Khomeyn 68 km · Kashan 69 km · Golpāyegān 70 km · Ārān Bīdgol 74 km · Qom 74 km · Arāk 92 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 Delījān (33.9905°, 50.6838°, elevation 1,522 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).