Rasht weather in December

In December, Rasht sees average daytime highs of 13°C and overnight lows near 5°C, with 136 mm of precipitation across 12.3 wet days and about 9.5 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 13°C through the month. The sky is clear or mostly clear about 36% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 36 min at the start of December to 9 h 30 min by month's end. Set against the rest of the year, December is Rasht's 4th-clearest and 2nd-windiest month. For the whole year in context, see Rasht's year-round climate.

Daytime high
13°
10th warmest
Overnight low
3rd coldest
Precipitation
136 mm
12.3 wet days
Daylight
9 h 24 min
7:24 AM – 4:51 PM
Cloud cover
58%
4th clearest
Wind
7 km/h
2nd windiest
Solar energy
2.04 kWh/m²
Travel score
3.4
out of 10

Rasht is city in Gilan Province, Iran.

Air quality
Elevated
PM2.5 20.5 µg/m³ · 2016
Density
3,303/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 13°C through the month.

A typical December day in Rasht reaches about 13°C in the afternoon and slips back to 5°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 18°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1147
2146
3146
4146
5146
6136
7136
8136
9136
10136
11135
12135
13135
14135
15135
16135
17135
18135
19135
20135
21135
22134
23134
24134
25134
26134
27134
28124
29124
30124
31124

Rasht 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° / 12512.62.39.72.6
Feb11° / 12212.43.210.62.7
Mar15° / 11814.40.911.73.9
Apr18° / 10°8812.9012.95.4
May23° / 15°569.50146.8
Jun27° / 19°718014.57.1
Jul29° / 21°828.5014.36.0
Aug29° / 21°10910.6013.45.7
Sep25° / 18°18914.4012.36.0
Oct22° / 14°22215.40115.8
Nov17° / 20114.10.4104.7
Dec13° / 13612.319.53.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54159
64159
74258
84258
94258
104258
114456
124456
134555
144654
154654
164951
174951
185050
195050
205149
215149
225248
235248
245347
255347
265347
275347
285248
295248
305149
315149

Chance of precipitation in December

Any precipitationSnow

Rasht gets around 136 mm of rain and snow over 12.3 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 40% and peaks near 49% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1492
2482
3482
4482
5472
6472
7463
8463
9453
10454
11444
12434
13425
14415
15405
16395
17395
18385
19375
20374
21364
22354
23354
24343
25343
26343
27343
28343
29343
30353
31353

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 36 min at the start of December to 9 h 30 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 7:13 AM to 7:31 AM, and sunset from 4:50 PM to 4:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.67:134:50
29.67:144:50
39.67:154:50
49.67:154:50
59.67:164:50
69.57:174:50
79.57:184:50
89.57:194:50
99.57:204:50
109.57:204:50
119.57:214:50
129.57:224:50
139.57:224:50
149.57:234:51
159.57:244:51
169.47:244:51
179.47:254:52
189.47:264:52
199.47:264:52
209.47:274:53
219.47:274:53
229.47:284:54
239.47:284:54
249.47:294:55
259.47:294:55
269.47:294:56
279.47:304:56
289.47:304:57
299.57:304:57
309.57:314:58
319.57:314:59

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.04 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.04 kWh/m² to a high of 6.21 kWh/m² in June across the year — December's 2.04 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.0Moderate
22.0Moderate
32.0Moderate
42.0Dim
52.0Dim
62.0Dim
72.0Dim
82.0Dim
92.0Dim
102.0Dim
112.0Dim
122.0Dim
132.0Dim
142.0Moderate
152.0Moderate
162.0Moderate
172.0Moderate
182.0Moderate
192.1Moderate
202.1Moderate
212.1Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.2Moderate
272.2Moderate
282.2Moderate
292.2Moderate
302.2Moderate
312.2Moderate
Planning a trip in December

Is December a good time to visit Rasht?

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

3.4
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 Rasht.

What to pack for Rasht in December

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

In December, Rasht sees daytime highs around 13°C and nights near 5°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Rasht in December

The nearest coast averages about 15°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 39 km away) is warmest in August at about 28°C and coldest in February near 10°C.

It's comfortable for a long swim from May 22 to Nov 3 — about 5.5 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar11Bracing
Apr13Bracing
May19Cool
Jun24Warm
Jul27Warm
Aug28Warm
Sep26Warm
Oct23Refreshing
Nov18Cool
Dec15Bracing

UV index in Rasht 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 Rasht peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 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 18UV 9Jan 12UV 2
UV index (midday)Level
Jan2Low
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct5Moderate
Nov3Moderate
Dec2Moderate

Air quality in Rasht 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 Rasht is worst in March — around 26 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 14 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Rasht's WHO annual average of 20.5 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1825 µg/m³Jul 1314 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb21Moderate
Mar26Moderate
Apr22Moderate
May21Moderate
Jun16Moderate
Jul14Moderate
Aug19Moderate
Sep24Moderate
Oct22Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Rasht?

Rasht sits at 37.3°N, 49.6°E, 4 m above sea level, in Iran. The nearest listed city is Khomām, 14 km away.

Topography around Rasht

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

Within 3 km, the terrain around Rasht has only modest variations in elevation — a maximum elevation change of 26 m around an average of -1 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 375 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,110 m.

The land around Rasht is covered by artificial surfaces (89%) within 3 km, cropland (50%) and trees (24%) within 16 km, and water (34%), trees (27%) and grassland (23%) within 80 km.

3 km
26 m
16 km
375 m
80 km
3,110 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Khomām 14 km · Şowme‘eh Sarā 24 km · Bandar-e Anzalī 25 km · Fūman 25 km · Sīāhkal 29 km · Āstāneh-ye Ashrafīyeh 31 km · Lāhījān 38 km · Māsāl 41 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 Rasht (37.2761°, 49.5886°, elevation 4 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).