Altai weather in January

In January, Altai sees average daytime highs of -12°C and overnight lows near -20°C, with 1 mm of precipitation across 0.2 wet days and about 8.8 hours of daylight. It is the 12th-warmest and 12th-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 65% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 30 min at the start of January to 9 h 18 min by month's end. Set against the rest of the year, January is Altai's 1st-clearest and 11th-windiest month. For the whole year in context, see Altai's year-round climate.

Daytime high
-12°
12th warmest
Overnight low
-20°
1st coldest
Precipitation
1 mm
0.2 wet days
Daylight
8 h 48 min
8:21 AM – 5:08 PM
Cloud cover
30%
1st clearest
Wind
7 km/h
11th windiest
Solar energy
2.16 kWh/m²
Travel score
0.0
out of 10

Altai is Capital city of Govi-Altai Province, Mongolia.

Density
8/km²
people per km²

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 Altai reaches about -12°C in the afternoon and slips back to -20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between -18°C and -6°C. Set against its neighbours, January runs about 2°C cooler than December and about 4°C cooler than February.

-30°-20°-10°151015202531
Avg high (°C)Avg low (°C)
1-11-19
2-12-20
3-12-20
4-12-20
5-12-20
6-12-20
7-12-20
8-12-20
9-12-20
10-12-20
11-12-20
12-12-20
13-12-20
14-12-20
15-12-20
16-12-20
17-12-20
18-12-20
19-12-20
20-12-20
21-12-21
22-12-20
23-12-20
24-12-20
25-12-20
26-12-20
27-11-20
28-11-20
29-11-20
30-11-20
31-11-20

How January really feels in Altai

Once humidity and wind are folded in, January 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
31 feel bitter (≤ -10°C)

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

Altai weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-12° / -20°10.20.68.80.0
Feb-8° / -18°20.81.5100.0
Mar-1° / -11°92.83.511.60.0
Apr / -3°175.23.713.31.4
May14° / 256.72.614.74.6
Jun20° / 448.60.315.56.4
Jul22° / 12°569.4015.26.7
Aug20° / 427.60.2146.8
Sep14° / 184.91.512.44.8
Oct / -5°113.73.710.70.8
Nov-4° / -13°51.82.19.20.0
Dec-10° / -18°20.618.50.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 24%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27822
37822
47822
57822
67822
77822
87822
97822
107822
117723
127723
137624
147624
157525
167525
177525
187525
197624
207525
217525
227525
237525
247624
257624
267723
277723
287624
297624
307624
317624

Chance of precipitation in January

Any precipitationSnow

Altai gets around 1 mm of rain and snow over 0.2 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 1% and peaks near 2% on the wettest days, and about 1 day brings snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
124
224
324
424
514
613
713
813
913
1012
1112
1212
1312
1412
1511
1611
1711
1811
1911
2001
2101
2201
2301
2401
2501
2601
2701
2802
2912
3012
3112

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.

Across January, 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 January

DaylightNight

Daylight runs from about 8 h 30 min at the start of January to 9 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 8:24 AM to 8:09 AM, and sunset from 4:52 PM to 5:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.58:244:52
28.58:244:53
38.58:244:54
48.58:244:54
58.58:244:55
68.58:244:56
78.68:244:57
88.68:244:58
98.68:245:00
108.68:235:01
118.68:235:02
128.78:235:03
138.78:225:04
148.78:225:05
158.88:215:06
168.88:215:08
178.88:205:09
188.88:205:10
198.98:195:11
208.98:185:13
218.98:185:14
229.08:175:15
239.08:165:17
249.08:155:18
259.18:145:20
269.18:145:21
279.28:135:22
289.28:125:24
299.28:115:25
309.38:105:27
319.38:095:28

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.16 kWh/m².

For context, solar energy here swings from a low near 1.76 kWh/m² to a high of 7 kWh/m² in May across the year — January's 2.16 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.9Dim
41.9Dim
51.9Dim
61.9Dim
71.9Dim
81.9Dim
92.0Dim
102.0Dim
112.0Moderate
122.0Moderate
132.1Moderate
142.1Moderate
152.1Moderate
162.1Moderate
172.2Moderate
182.2Moderate
192.2Moderate
202.3Moderate
212.3Moderate
222.3Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in January

Is January a good time to visit Altai?

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

0.0
Sightseeing
8th-best month of the year
0.0
Beach & pool
6th-best month of the year

January is a weaker month for outdoor sightseeing in Altai.

What to pack for Altai in January

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

In January, Altai sees daytime highs around -12°C and nights near -20°C. Pack a warm layer and a heavy coat.

a warm layera heavy coat

UV index in Altai in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Altai peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 9Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul10Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Altai 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 Altai is worst in June — around 22 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (December, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1321 µg/m³Dec 146 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar15Moderate
Apr13Moderate
May18Moderate
Jun22Moderate
Jul14Moderate
Aug18Moderate
Sep9Good
Oct8Good
Nov8Good
Dec5Good
Location & terrain

Where is Altai?

Altai sits at 46.4°N, 96.3°E, 2,156 m above sea level, in Mongolia. The nearest listed city is Uliastay, 159 km away.

UliastayBayanhongorKhovdTsetserlegMörönBogdArvayheerUlaangom

Topography around Altai

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

Within 3 km, the terrain around Altai has only modest variations in elevation — a maximum elevation change of 147 m around an average of 2,168 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,074 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,683 m.

The land around Altai is covered by bare terrain (51%) and grassland (39%) within 3 km, grassland (67%) and bare terrain (32%) within 16 km, and bare terrain (54%) and grassland (46%) within 80 km.

3 km
147 m
16 km
1,074 m
80 km
2,683 m
treesgrasslandartificial surfacesbare terrain
January weather nearby: Uliastay 159 km · Bayanhongor 343 km · Khovd 393 km · Tsetserleg 413 km · Mörön 465 km · Bogd 498 km · Arvayheer 500 km · Ulaangom 507 km

Mongolia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$7,108
2025
Happiness
5.9 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
5.9
per 100k, 2023
Road deaths
21
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 447
Religion
Buddhist 52%no religion 41%Muslim 3%Shaman 3%

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 Altai (46.3722°, 96.2583°, elevation 2,156 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).