Eyvān weather in December

In December, Eyvān sees average daytime highs of 12°C and overnight lows near 2°C, with 81 mm of precipitation across 8.8 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 13°C in the first days to 10°C by the end. The sky is clear or mostly clear about 51% 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 Eyvān's 10th-clearest and 11th-windiest month. For the whole year in context, see Eyvān's year-round climate.

Daytime high
12°
10th warmest
Overnight low
3rd coldest
Precipitation
81 mm
8.8 wet days
Daylight
9 h 48 min
7:28 AM – 5:14 PM
Cloud cover
44%
10th clearest
Wind
7 km/h
11th windiest
Solar energy
2.85 kWh/m²
Travel score
3.2
out of 10

Eyvān is city in Ilam 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 13°C in the first days to 10°C by the end.

A typical December day in Eyvān reaches about 12°C in the afternoon and slips back to 2°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 16°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1133
2133
3133
4133
5133
6133
7123
8123
9123
10123
11122
12122
13122
14112
15112
16112
17112
18112
19112
20112
21112
22112
23111
24111
25111
26111
27111
28111
29111
30101
31101

How December really feels in Eyvān

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 16 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
16
wind chill below the day's low

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

Eyvān 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
Jan / -0°9410.13.8102.0
Feb11° / 9010.32.510.72.7
Mar15° / 9510.40.911.74.8
Apr21° / 628.6012.86.9
May27° / 14°193.7013.77.4
Jun34° / 19°10.2014.24.3
Jul37° / 22°00.10142.2
Aug37° / 21°00.1013.32.2
Sep33° / 17°10.3012.25.1
Oct26° / 12°283.6011.18.0
Nov17° / 747.70.110.25.8
Dec12° / 818.81.39.83.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 37%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46238
56238
66238
76238
86139
96139
106238
116238
126238
136238
146337
156238
166238
176337
186337
196535
206535
216535
226535
236436
246436
256436
266436
276337
286337
296238
306238
316238

Chance of precipitation in December

Any precipitationSnow

Eyvān gets around 81 mm of rain and snow over 8.8 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 28% and peaks near 31% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1282
2292
3292
4293
5303
6303
7303
8313
9313
10313
11313
12303
13303
14304
15294
16294
17294
18284
19285
20275
21275
22275
23265
24265
25265
26265
27265
28265
29275
30275
31286

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.

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 7:17 AM to 7:35 AM, and sunset from 5:12 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:175:12
29.97:185:12
39.97:195:12
49.97:205:12
59.97:205:12
69.87:215:12
79.87:225:12
89.87:235:12
99.87:235:12
109.87:245:12
119.87:255:12
129.87:265:13
139.87:265:13
149.87:275:13
159.87:275:13
169.87:285:14
179.87:295:14
189.87:295:14
199.87:305:15
209.77:305:15
219.77:315:16
229.77:315:16
239.77:325:17
249.77:325:17
259.87:335:18
269.87:335:18
279.87:335:19
289.87:345:19
299.87:345:20
309.87:345:21
319.87:355:21

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.85 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.85 kWh/m² to a high of 8.03 kWh/m² in June across the year — December's 2.85 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
33.0Moderate
43.0Moderate
52.9Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.9Moderate
102.9Moderate
112.9Moderate
122.9Moderate
132.9Moderate
142.8Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.9Moderate
302.9Moderate
312.9Moderate
Planning a trip in December

Hazard calendar for Eyvān

In seasonPeak

In December, Eyvān sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Eyvān's rainy season runs November–April, when most of the year's rain falls.

Eyvān sees seasonal dust haze (April–May), heaviest in May.

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

Is December a good time to visit Eyvān?

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

3.2
Sightseeing
8th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Eyvān.

What to pack for Eyvān in December

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

In December, Eyvān sees daytime highs around 12°C and nights near 2°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

UV index in Eyvān 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 Eyvān peaks around June 15 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 highVery highHighModerateJun 15UV 10Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May10Very high
Jun11Extreme
Jul9Very high
Aug11Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Eyvān 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 Eyvān is worst in May — around 41 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1241 µg/m³Nov 2327 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb31Moderate
Mar37Poor
Apr40Poor
May41Poor
Jun35Moderate
Jul34Moderate
Aug33Moderate
Sep32Moderate
Oct32Moderate
Nov27Moderate
Dec27Moderate
Location & terrain

Where is Eyvān?

Eyvān sits at 33.8°N, 46.3°E, 1,184 m above sea level, in Iran. The nearest listed city is Īlām, 24 km away.

Qaşr-e ShīrīnKhānaqīnRavānsar

Topography around Eyvān

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

Within 3 km, the terrain around Eyvān has large variations in elevation — a maximum elevation change of 701 m around an average of 1,303 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,464 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,728 m.

The land around Eyvān is covered by grassland (43%) and cropland (39%) within 3 km, grassland (63%) and cropland (23%) within 16 km, and grassland (56%) and cropland (23%) within 80 km.

3 km
701 m
16 km
1,464 m
80 km
2,728 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Īlām 24 km · Eslāmābād-e Gharb 37 km · Mandalī 70 km · Sarpol-e Z̄ahāb 82 km · Kermanshah 88 km · Qaşr-e Shīrīn 102 km · Khānaqīn 103 km · Ravānsar 104 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 Eyvān (33.8272°, 46.3097°, elevation 1,184 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).