Golpāyegān weather in December

In December, Golpāyegān sees average daytime highs of 8°C and overnight lows near -4°C, with 23 mm of precipitation across 5 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 6th-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 52% 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 Golpāyegān's 11th-clearest and 12th-windiest month. For the whole year in context, see Golpāyegān's year-round climate.

Daytime high
10th warmest
Overnight low
-4°
3rd coldest
Precipitation
23 mm
5 wet days
Daylight
9 h 48 min
7:11 AM – 4:59 PM
Cloud cover
42%
11th clearest
Wind
7 km/h
12th windiest
Solar energy
3.17 kWh/m²
Travel score
1.7
out of 10

Golpāyegān is city in Isfahan 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 Golpāyegān reaches about 8°C in the afternoon and slips back to -4°C overnight — a 12°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°10°151015202531
Avg high (°C)Avg low (°C)
110-2
210-2
310-2
49-2
59-2
69-3
79-3
89-3
99-3
109-3
118-3
128-3
138-3
148-4
158-4
168-4
178-4
188-4
198-4
208-4
218-4
228-4
238-4
248-4
258-4
267-5
277-5
287-5
297-5
307-5
317-5

How December really feels in Golpāyegān

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.

Golpāyegān weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°275.54.7100.2
Feb / -4°305.73.710.81.5
Mar12° / -0°366.72.511.73.8
Apr18° / 317.40.212.86.2
May24° / 10°195.3013.77.8
Jun31° / 15°30.9014.26.3
Jul34° / 19°10.20144.1
Aug33° / 18°10.1013.24.8
Sep29° / 13°10.5012.27.7
Oct21° / 113.2011.28.2
Nov13° / 254.90.910.34.4
Dec / -4°23539.81.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% 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 32%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16931
26931
36931
46832
56733
66634
76634
86634
96634
106634
116733
126733
136733
146733
156733
166733
176733
186733
196931
206931
216931
227030
237030
247030
257030
267129
277030
287030
297030
307030
317129

Chance of precipitation in December

Any precipitationSnow

Golpāyegān gets around 23 mm of rain and snow over 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 16% and peaks near 20% on the wettest days, and about 3 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
1188
2188
3189
4199
51910
62010
72010
82011
92011
102011
112011
121911
131911
141811
151811
161711
171611
181610
191510
201410
211410
22139
23129
24129
25129
26129
27128
28129
29129
30139
31139

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 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 7:18 AM, and sunset from 4:57 PM to 5:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:004:57
29.97:014:57
39.97:024:57
49.97:034:57
59.97:044:57
69.97:044:57
79.97:054:57
89.97:064:57
99.87:074:57
109.87:074:57
119.87:084:58
129.87:094:58
139.87:094:58
149.87:104:58
159.87:114:59
169.87:114:59
179.87:124:59
189.87:125:00
199.87:135:00
209.87:135:00
219.87:145:01
229.87:145:01
239.87:155:02
249.87:155:02
259.87:165:03
269.87:165:03
279.87:165:04
289.87:175:04
299.87:175:05
309.87:175:06
319.87:185:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.17 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.17 kWh/m² to a high of 7.88 kWh/m² in June across the year — December's 3.17 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.2Moderate
83.2Moderate
93.2Moderate
103.2Moderate
113.2Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.2Moderate
163.2Moderate
173.2Moderate
183.2Moderate
193.2Moderate
203.2Moderate
213.2Moderate
223.2Moderate
233.2Moderate
243.2Moderate
253.2Moderate
263.2Moderate
273.2Moderate
283.2Moderate
293.2Moderate
303.2Moderate
313.3Moderate
Planning a trip in December

Is December a good time to visit Golpāyegān?

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

1.7
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 Golpāyegān.

What to pack for Golpāyegān in December

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

In December, Golpāyegān sees daytime highs around 8°C and nights near -4°C. Pack a warm layer. Worth having: a heavy coat. About 5 days see rain.

a warm layera heavy coat

UV index in Golpāyegān 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 Golpāyegān peaks around July 20 at about 11 (extreme) — 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 20UV 11Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar6High
Apr7Very high
May11Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Golpāyegān 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 Golpāyegān is worst in April — around 39 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (August, 25 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1939 µg/m³Aug 1825 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb30Moderate
Mar34Moderate
Apr39Poor
May37Poor
Jun29Moderate
Jul31Moderate
Aug25Moderate
Sep29Moderate
Oct28Moderate
Nov27Moderate
Dec26Moderate
Location & terrain

Where is Golpāyegān?

Golpāyegān sits at 33.5°N, 50.3°E, 1,830 m above sea level, in Iran. The nearest listed city is Khānsār, 26 km away.

Topography around Golpāyegān

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

Within 3 km, the terrain around Golpāyegān has only modest variations in elevation — a maximum elevation change of 53 m around an average of 1,818 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,375 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,652 m.

The land around Golpāyegān is covered by cropland (48%) and artificial surfaces (29%) within 3 km, bare terrain (59%) and cropland (22%) within 16 km, and bare terrain (53%), grassland (23%) and cropland (23%) within 80 km.

3 km
53 m
16 km
1,375 m
80 km
2,652 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Khānsār 26 km · Khomeyn 28 km · Dārān 53 km · Maḩallāt 53 km · Alīgūdarz 56 km · Delījān 70 km · Aznā 77 km · Arāk 90 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 Golpāyegān (33.4537°, 50.2884°, elevation 1,830 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).