Robāţ Karīm weather in December

In December, Robāţ Karīm sees average daytime highs of 10°C and overnight lows near 1°C, with 36 mm of precipitation across 7.1 wet days and about 9.6 hours of daylight. It is the 11th-warmest and 5th-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 54% 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 Robāţ Karīm's 10th-clearest and 12th-windiest month. For the whole year in context, see Robāţ Karīm's year-round climate.

Daytime high
10°
11th warmest
Overnight low
3rd coldest
Precipitation
36 mm
7.1 wet days
Daylight
9 h 36 min
7:13 AM – 4:50 PM
Cloud cover
41%
10th clearest
Wind
7 km/h
12th windiest
Solar energy
2.7 kWh/m²
Travel score
2.6
out of 10

Robāţ Karīm is city in Tehran Province, Iran.

Air quality
High
PM2.5 27.5 µg/m³ · 2016

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 11°C in the first days to 9°C by the end.

A typical December day in Robāţ Karīm 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 5°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
2122
3112
4112
5112
6112
7112
8112
9112
10101
11101
12101
13101
14101
15101
16101
17101
18101
19101
20101
21100
22100
23100
24100
25100
26100
2790
2890
2990
3090
3190

How December really feels in Robāţ Karīm

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 27 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
27
wind chill below the day's low

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

Robāţ Karīm weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°36739.91.7
Feb11° / 377.61.610.72.9
Mar16° / 498.60.611.75.5
Apr22° / 11°477.60.112.97.3
May29° / 16°173.9013.86.5
Jun35° / 21°40.9014.43.0
Jul38° / 24°20.5014.21.2
Aug37° / 23°20.3013.32.0
Sep33° / 18°20.4012.25.1
Oct25° / 13°152.8011.18.3
Nov16° / 396.30.310.15.5
Dec10° / 367.11.49.62.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26634
36436
46436
56436
66337
76337
86337
96238
106238
116238
126337
136436
146436
156436
166634
176634
186634
196733
206832
216931
226931
237030
247129
257129
267129
277129
287030
297030
307030
317030

Chance of precipitation in December

Any precipitationSnow

Robāţ Karīm gets around 36 mm of rain and snow over 7.1 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 23% and peaks near 26% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1253
2253
3253
4254
5254
6264
7264
8265
9265
10265
11265
12265
13265
14255
15255
16245
17245
18235
19235
20225
21225
22215
23205
24205
25205
26195
27195
28195
29196
30206
31206

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 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 7:02 AM to 7:20 AM, and sunset from 4:49 PM to 4:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:024:49
29.87:034:49
39.77:044:49
49.77:054:49
59.77:054:48
69.77:064:49
79.77:074:49
89.77:084:49
99.77:094:49
109.77:094:49
119.67:104:49
129.67:114:49
139.67:114:49
149.67:124:50
159.67:134:50
169.67:134:50
179.67:144:51
189.67:154:51
199.67:154:51
209.67:164:52
219.67:164:52
229.67:174:53
239.67:174:53
249.67:184:54
259.67:184:54
269.67:184:55
279.67:194:55
289.67:194:56
299.67:194:56
309.67:204:57
319.67:204:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.7 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.7 kWh/m² to a high of 7.84 kWh/m² in June across the year — December's 2.7 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.7Moderate
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
202.7Moderate
212.7Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.9Moderate
Planning a trip in December

Is December a good time to visit Robāţ Karīm?

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

2.6
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 Robāţ Karīm.

What to pack for Robāţ Karīm in December

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

In December, Robāţ Karīm sees daytime highs around 10°C and nights near 1°C. Pack a warm layer. About 7 days see rain.

a warm layer

UV index in Robāţ Karīm 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 Robāţ Karīm peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateJul 16UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May9Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec3Moderate

Air quality in Robāţ Karīm 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 Robāţ Karīm is worst in December — around 48 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (July, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Robāţ Karīm's WHO annual average of 27.5 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 2247 µg/m³Jul 2012 µg/m³
PM2.5 (µg/m³)Level
Jan46Poor
Feb39Poor
Mar28Moderate
Apr25Moderate
May20Moderate
Jun15Moderate
Jul12Good
Aug13Moderate
Sep18Moderate
Oct26Moderate
Nov39Poor
Dec48Poor
Location & terrain

Where is Robāţ Karīm?

Robāţ Karīm sits at 35.5°N, 51.1°E, 1,038 m above sea level, in Iran. The nearest listed city is Nasirshahr, 5.0 km away.

Topography around Robāţ Karīm

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

Within 3 km, the terrain around Robāţ Karīm has only modest variations in elevation — a maximum elevation change of 84 m around an average of 1,041 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 450 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,550 m.

The land around Robāţ Karīm is covered by bare terrain (41%) and artificial surfaces (35%) within 3 km, bare terrain (51%) within 16 km, and bare terrain (52%) and grassland (22%) within 80 km.

3 km
84 m
16 km
450 m
80 km
3,550 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Nasirshahr 5.0 km · Ovrīn 8.0 km · Khabarābād 9.0 km · Golestān 10 km · Shāhedshahr 10 km · Parand 10 km · Ṣāleḥīeh 10 km · Şabbāshahr 11 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 Robāţ Karīm (35.4846°, 51.0829°, elevation 1,038 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).