Āstārā weather in December

In December, Āstārā sees average daytime highs of 9°C and overnight lows near 4°C, with 122 mm of precipitation across 14.8 wet days and about 9.4 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 10°C in the first days to 8°C by the end. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 30 min at the start of December to 9 h 24 min by month's end. Set against the rest of the year, December is Āstārā's 7th-clearest and 7th-windiest month. For the whole year in context, see Āstārā's year-round climate.

Daytime high
10th warmest
Overnight low
3rd coldest
Precipitation
122 mm
14.8 wet days
Daylight
9 h 18 min
7:31 AM – 4:51 PM
Cloud cover
64%
7th clearest
Wind
6 km/h
7th windiest
Solar energy
1.9 kWh/m²
Travel score
1.6
out of 10

Āstārā is city in Gilan 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 10°C in the first days to 8°C by the end.

A typical December day in Āstārā reaches about 9°C in the afternoon and slips back to 4°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 14°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1106
2105
3105
4105
5105
6105
795
895
995
1094
1194
1294
1394
1494
1594
1694
1794
1894
1994
2093
2193
2293
2383
2483
2583
2683
2783
2883
2983
3083
3183

How December really feels in Āstārā

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

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Āstārā 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 / 11014.35.99.60.7
Feb / 10612.8710.50.8
Mar10° / 9913.65.911.72.2
Apr15° / 7913.51.7134.0
May20° / 14°6712.20.114.15.9
Jun24° / 19°377014.67.7
Jul27° / 21°334.9014.47.9
Aug27° / 21°506.1013.57.7
Sep23° / 17°12511.7012.36.6
Oct18° / 13°18815.70.7115.1
Nov13° / 17616.33.19.93.0
Dec / 12214.85.19.41.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23664
33664
43664
53466
63466
73367
83367
93466
103466
113466
123565
133565
143664
153664
163763
173961
183961
194060
204258
214357
224357
234555
244555
254555
264555
274555
284555
294555
304555
314555

Chance of precipitation in December

Any precipitationSnow

Āstārā gets around 122 mm of rain and snow over 14.8 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 48% and peaks near 54% on the wettest days, and about 5 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
15318
25318
35318
45419
55419
65419
75419
85320
95320
105319
115219
125119
135118
145018
154918
164817
174817
184716
194616
204515
214415
224314
234213
244213
254112
264112
274112
284112
294112
304112
314213

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.

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 30 min at the start of December to 9 h 24 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 7:19 AM to 7:37 AM, and sunset from 4:50 PM to 4:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.57:194:50
29.57:204:50
39.57:214:49
49.57:214:49
59.47:224:49
69.47:234:49
79.47:244:49
89.47:254:49
99.47:264:49
109.47:264:49
119.47:274:50
129.47:284:50
139.47:294:50
149.37:294:50
159.37:304:50
169.37:314:51
179.37:314:51
189.37:324:51
199.37:324:52
209.37:334:52
219.37:334:53
229.37:344:53
239.37:344:53
249.37:354:54
259.37:354:55
269.37:364:55
279.37:364:56
289.37:364:56
299.37:374:57
309.37:374:58
319.47:374:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.9 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 6.66 kWh/m² in July across the year — December's 1.9 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.9Dim
21.9Dim
31.9Dim
41.9Dim
51.9Dim
61.9Dim
71.9Dim
81.9Dim
91.9Dim
101.9Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
151.9Dim
161.9Dim
171.9Dim
181.9Dim
191.9Dim
201.9Dim
211.9Dim
221.9Dim
232.0Dim
242.0Dim
252.0Dim
262.0Dim
272.0Dim
282.0Moderate
292.0Moderate
302.0Moderate
312.0Moderate
Planning a trip in December

Hazard calendar for Āstārā

In seasonPeak

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

Āstārā's rainy season runs September–March, when most of the year's rain falls.

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

Is December a good time to visit Āstārā?

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

1.6
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Āstārā.

What to pack for Āstārā in December

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

In December, Āstārā sees daytime highs around 9°C and nights near 4°C. Pack a warm layer and rain gear. About 15 days see rain.

a warm layerrain gear

Sea temperature near Āstārā in December

The nearest coast averages about 14°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 28°C and coldest in February near 9°C.

It's comfortable for a long swim from May 25 to Oct 31 — about 5.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar10Bracing
Apr13Bracing
May19Cool
Jun24Refreshing
Jul27Warm
Aug28Warm
Sep26Warm
Oct22Refreshing
Nov18Cool
Dec14Bracing

UV index in Āstārā in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Āstārā peaks around July 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 20UV 9Dec 17UV 2
UV index (midday)Level
Jan3Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Āstārā 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 Āstārā is worst in March — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2122 µg/m³Jul 1314 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar22Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug18Moderate
Sep20Moderate
Oct18Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Āstārā?

Āstārā sits at 38.4°N, 48.9°E, -22 m above sea level, in Iran. The nearest listed city is Astara, 3.0 km away.

Topography around Āstārā

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

Within 3 km, the terrain around Āstārā has only modest variations in elevation — a maximum elevation change of 14 m around an average of -24 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,326 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,246 m.

The land around Āstārā is covered by water (31%), artificial surfaces (26%) and cropland (22%) within 3 km, water (48%) and trees (35%) within 16 km, and water (48%) within 80 km.

3 km
14 m
16 km
1,326 m
80 km
3,246 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Astara 3.0 km · Lankaran 36 km · Ardabīl 54 km · Lerik 55 km · Hashtpar 71 km · Jalilabad 93 km · Germī 95 km · Khalkhāl 95 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 Āstārā (38.4308°, 48.8699°, elevation -22 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).