Sīāhkal weather in January

In January, Sīāhkal sees average daytime highs of 12°C and overnight lows near 3°C, with 116 mm of precipitation across 11.2 wet days and about 9.7 hours of daylight. It is the 12th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 12°C through the month. The sky is clear or mostly clear about 37% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 30 min at the start of January to 10 h 06 min by month's end. Set against the rest of the year, January is Sīāhkal's 6th-clearest and 1st-windiest month. For the whole year in context, see Sīāhkal's year-round climate.

Daytime high
12°
12th warmest
Overnight low
1st coldest
Precipitation
116 mm
11.2 wet days
Daylight
9 h 42 min
7:29 AM – 5:11 PM
Cloud cover
57%
6th clearest
Wind
7 km/h
1st windiest
Solar energy
2.41 kWh/m²
Travel score
3.0
out of 10

Sīāhkal is city in Gilan Province, Iran.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 12°C through the month.

A typical January day in Sīāhkal reaches about 12°C in the afternoon and slips back to 3°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 17°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
1134
2134
3134
4134
5124
6124
7124
8124
9124
10124
11124
12124
13124
14123
15113
16113
17113
18113
19113
20113
21113
22113
23113
24113
25113
26113
27113
28123
29123
30123
31123

How January really feels in Sīāhkal

Once humidity and wind are folded in, January 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

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

Sīāhkal weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 11611.21.69.73.0
Feb12° / 11711.62.210.63.0
Mar15° / 10913.10.411.74.3
Apr19° / 11°7710.6012.95.9
May24° / 15°478.50147.0
Jun28° / 19°667.7014.56.7
Jul30° / 22°768.7014.35.4
Aug30° / 22°9610.6013.45.2
Sep26° / 19°16913.8012.36.0
Oct22° / 14°18814.60116.0
Nov17° / 10°17813.20.3105.0
Dec14° / 12511.30.69.53.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35050
45050
55050
64951
74951
84951
94852
104852
114852
124852
134753
144753
154753
164654
174654
184654
194654
204654
214654
224654
234654
244654
254555
264654
274654
284654
294753
304852
314852

Chance of precipitation in January

Any precipitationSnow

Sīāhkal gets around 116 mm of rain and snow over 11.2 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 39% on the wettest days, and about 2 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1313
2313
3323
4323
5334
6344
7354
8354
9364
10364
11375
12375
13375
14375
15375
16375
17375
18375
19375
20375
21376
22376
23376
24376
25387
26387
27387
28388
29388
30398
31399

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January 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 January

Winds average 7 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 7 km/h on the calmest days to 8 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
298calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 30 min at the start of January to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:29 AM to 7:21 AM, and sunset from 4:58 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.57:294:58
29.57:294:59
39.57:295:00
49.57:305:01
59.57:305:01
69.57:305:02
79.67:305:03
89.67:305:04
99.67:305:05
109.67:305:05
119.67:295:06
129.67:295:07
139.77:295:08
149.77:295:09
159.77:295:10
169.77:295:11
179.77:285:12
189.87:285:13
199.87:285:14
209.87:275:15
219.87:275:16
229.87:265:17
239.97:265:18
249.97:255:19
259.97:255:20
269.97:245:21
2710.07:245:22
2810.07:235:23
2910.07:235:24
3010.17:225:25
3110.17:215:26

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.41 kWh/m².

For context, solar energy here swings from a low near 2.07 kWh/m² to a high of 6.29 kWh/m² in June across the year — January's 2.41 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.2Moderate
32.2Moderate
42.2Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.3Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.4Moderate
162.4Moderate
172.4Moderate
182.4Moderate
192.4Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.6Moderate
252.6Moderate
262.6Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.7Moderate
312.8Moderate
Planning a trip in January

Is January a good time to visit Sīāhkal?

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

3.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Sīāhkal.

What to pack for Sīāhkal in January

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

In January, Sīāhkal sees daytime highs around 12°C and nights near 3°C. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Sīāhkal in January

The nearest coast averages about 12°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 33 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 24 to Nov 4 — about 5.4 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
Nov19Cool
Dec15Bracing

UV index in Sīāhkal in January

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Sīāhkal peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 17UV 9Jan 11UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct5Moderate
Nov3Moderate
Dec2Moderate

Air quality in Sīāhkal in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Sīāhkal is worst in March — around 27 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1826 µg/m³Jul 1315 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb21Moderate
Mar27Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul14Moderate
Aug20Moderate
Sep25Moderate
Oct23Moderate
Nov21Moderate
Dec20Moderate
Location & terrain

Where is Sīāhkal?

Sīāhkal sits at 37.2°N, 49.9°E, 47 m above sea level, in Iran. The nearest listed city is Lāhījān, 13 km away.

Topography around Sīāhkal

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

Within 3 km, the terrain around Sīāhkal has only modest variations in elevation — a maximum elevation change of 148 m around an average of 44 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,255 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,710 m.

The land around Sīāhkal is covered by trees (40%) and cropland (39%) within 3 km, trees (56%) and cropland (34%) within 16 km, and water (35%), trees (25%) and grassland (25%) within 80 km.

3 km
148 m
16 km
1,255 m
80 km
3,710 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Lāhījān 13 km · Āstāneh-ye Ashrafīyeh 14 km · Langarūd 25 km · Rasht 29 km · Amlash 29 km · Khomām 32 km · Rūdsar 37 km · Fūman 50 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 Sīāhkal (37.1533°, 49.8714°, elevation 47 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).