Shahr-e Ṣadrā weather in December

In December, Shahr-e Ṣadrā sees average daytime highs of 13°C and overnight lows near 0°C, with 58 mm of precipitation across 4.9 wet days and about 10.1 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 15°C in the first days to 12°C by the end. The sky is clear or mostly clear about 63% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 12 min at the start of December to 10 h 06 min by month's end. Set against the rest of the year, December is Shahr-e Ṣadrā's 8th-clearest and 12th-windiest month. For the whole year in context, see Shahr-e Ṣadrā's year-round climate.

Daytime high
13°
10th warmest
Overnight low
3rd coldest
Precipitation
58 mm
4.9 wet days
Daylight
10 h 06 min
6:53 AM – 4:59 PM
Cloud cover
32%
8th clearest
Wind
6 km/h
12th windiest
Solar energy
3.59 kWh/m²
Travel score
4.6
out of 10

Shahr-e Ṣadrā is city in Fars 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 15°C in the first days to 12°C by the end.

A typical December day in Shahr-e Ṣadrā reaches about 13°C in the afternoon and slips back to 0°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 18°C. Set against its neighbours, December runs about 5°C cooler than November and about 3°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1152
2152
3152
4152
5151
6141
7141
8141
9141
10141
11141
12141
13141
14140
15130
16130
17130
18130
19130
20130
21130
22130
23130
24130
2513-1
2613-1
2713-1
2813-1
2912-1
3012-1
3112-1

How December really feels in Shahr-e Ṣadrā

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 28 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
28
wind chill below the day's low

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

Shahr-e Ṣadrā weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / -2°8172.310.33.0
Feb13° / 596.60.610.94.2
Mar17° / 606.80.111.86.2
Apr22° / 264.3012.77.8
May29° / 12°51.2013.57.3
Jun34° / 17°00.1013.94.1
Jul36° / 20°00.1013.72.7
Aug35° / 18°10.2013.13.4
Sep32° / 14°00012.25.8
Oct26° / 30.8011.38.9
Nov18° / 283.5010.57.2
Dec13° / 584.90.610.14.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% 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 25%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27525
37525
47525
57525
67525
77525
87525
97624
107525
117525
127525
137525
147525
157525
167525
177525
187525
197525
207525
217525
227624
237624
247525
257525
267624
277525
287525
297426
307426
317327

Chance of precipitation in December

Any precipitationSnow

Shahr-e Ṣadrā gets around 58 mm of rain and snow over 4.9 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 16% and peaks near 18% on the wettest days, and about 1 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1160
2160
3160
4161
5161
6171
7171
8181
9181
10182
11182
12182
13182
14182
15182
16172
17173
18173
19163
20163
21153
22153
23153
24143
25143
26153
27153
28153
29163
30164
31174

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 10 h 12 min at the start of December to 10 h 06 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 6:43 AM to 7:00 AM, and sunset from 4:56 PM to 5:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.26:434:56
210.26:444:56
310.26:454:56
410.26:454:57
510.26:464:57
610.26:474:57
710.26:474:57
810.16:484:57
910.16:494:57
1010.16:504:57
1110.16:504:58
1210.16:514:58
1310.16:514:58
1410.16:524:58
1510.16:534:59
1610.16:534:59
1710.16:544:59
1810.16:545:00
1910.16:555:00
2010.16:555:01
2110.16:565:01
2210.16:565:01
2310.16:575:02
2410.16:575:02
2510.16:585:03
2610.16:585:03
2710.16:595:04
2810.16:595:05
2910.16:595:05
3010.17:005:06
3110.17:005:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.59 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.59 kWh/m² to a high of 8.04 kWh/m² in June across the year — December's 3.59 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.6Moderate
303.6Moderate
313.6Moderate
Planning a trip in December

Is December a good time to visit Shahr-e Ṣadrā?

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

4.6
Sightseeing
7th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a reasonable time to visit Shahr-e Ṣadrā for sightseeing.

What to pack for Shahr-e Ṣadrā in December

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

In December, Shahr-e Ṣadrā sees daytime highs around 13°C and nights near 0°C. Worth packing: a warm layer. About 5 days see rain.

a warm layer

UV index in Shahr-e Ṣadrā in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Shahr-e Ṣadrā peaks around July 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 9 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highExtremeVery highHighModerateJul 18UV 12Jan 9UV 4
UV index (midday)Level
Jan4Moderate
Feb7High
Mar8Very high
Apr8Very high
May10Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep10Very high
Oct8Very high
Nov5High
Dec4Moderate

Air quality in Shahr-e Ṣadrā 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 Shahr-e Ṣadrā is worst in April — around 36 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (August, 19 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateApr 1636 µg/m³Aug 2120 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb28Moderate
Mar33Moderate
Apr36Poor
May33Moderate
Jun23Moderate
Jul26Moderate
Aug19Moderate
Sep21Moderate
Oct23Moderate
Nov22Moderate
Dec23Moderate
Location & terrain

Where is Shahr-e Ṣadrā?

Shahr-e Ṣadrā sits at 29.8°N, 52.5°E, 1,839 m above sea level, in Iran. The nearest listed city is Zarqān, 21 km away.

Topography around Shahr-e Ṣadrā

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Shahr-e Ṣadrā.

Within 3 km, the terrain around Shahr-e Ṣadrā has significant variations in elevation — a maximum elevation change of 510 m around an average of 1,907 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,219 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,014 m.

The land around Shahr-e Ṣadrā is covered by bare terrain (35%), grassland (31%) and artificial surfaces (27%) within 3 km, grassland (39%), bare terrain (29%) and cropland (22%) within 16 km, and grassland (48%) and cropland (25%) within 80 km.

3 km
510 m
16 km
1,219 m
80 km
3,014 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Zarqān 21 km · Shiraz 21 km · Marvdasht 30 km · Sa‘ādat Shahr 68 km · Kavār 69 km · Arsanjān 79 km · Pasargad 79 km · Kāzerūn 84 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 Shahr-e Ṣadrā (29.7997°, 52.5022°, elevation 1,839 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).