Yên Bái weather in January

In January, Yên Bái sees average daytime highs of 20°C and overnight lows near 14°C, with 43 mm of rain across 8.9 wet days and about 10.8 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 12% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of January to 11 hours by month's end. Set against the rest of the year, January is Yên Bái's 8th-clearest and 5th-windiest month. For the whole year in context, see Yên Bái's year-round climate.

Daytime high
20°
12th warmest
Overnight low
14°
1st coldest
Rainfall
43 mm
8.9 wet days
Daylight
10 h 48 min
6:45 AM – 5:34 PM
Cloud cover
77%
8th clearest
Wind
5 km/h
5th windiest
Solar energy
2.19 kWh/m²
Travel score
6.1
out of 10

Yên Bái is provincial city in Yên Bái province, Vietnam.

Density
942/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 20°C through the month.

A typical January day in Yên Bái reaches about 20°C in the afternoon and slips back to 14°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 25°C. Set against its neighbours, January runs about 2°C cooler than December and about 2°C cooler than February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12015
22015
32015
42015
52015
62015
72015
82015
92015
102014
112014
121914
131914
141914
151914
161914
171914
181914
191914
201914
211914
221914
231914
241914
251914
261914
271914
281914
292014
302014
312014

How January really feels in Yên Bái

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.

Yên Bái weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 14°438.910.86.1
Feb21° / 16°337.311.36.5
Mar24° / 18°7010.511.86.4
Apr29° / 22°12613.112.55.1
May31° / 25°29420133.3
Jun32° / 26°39823.213.32.4
Jul32° / 26°40725.613.22.3
Aug32° / 26°4152512.72.5
Sep31° / 25°22919.612.13.3
Oct29° / 23°11512.511.55.4
Nov25° / 19°648117.0
Dec21° / 16°427.910.76.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23169
33070
42971
52872
62674
72674
82476
92476
102476
112278
122278
132179
142179
152179
162179
172179
182179
192179
202179
212278
222278
232278
242278
252377
262377
272377
282476
292575
302575
312575

Chance of precipitation in January

Any precipitation

Yên Bái gets around 43 mm of rain over 8.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
228
328
428
529
629
729
829
930
1030
1130
1229
1329
1429
1529
1629
1729
1829
1929
2029
2129
2228
2328
2428
2528
2628
2728
2827
2927
3026
3125

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
139253070
239242970
339242980
440242880
540232890
641232790
742232690
842232690
9432325100
10432424100
11432423100
1244242290
1344252290
1444252190
1545262190
1645262180
1745262080
1845262080
1946262080
2046262070
2146262070
2247262070
2347252170
2447242170
2548232180
2648222180
2748222180
2849212191
2949202291
3048202291
31481922101

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 42 min at the start of January to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:43 AM to 6:44 AM, and sunset from 5:24 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:435:24
210.76:435:25
310.76:435:26
410.76:445:26
510.76:445:27
610.76:445:27
710.76:445:28
810.76:445:29
910.76:455:29
1010.86:455:30
1110.86:455:31
1210.86:455:31
1310.86:455:32
1410.86:455:33
1510.86:455:33
1610.86:455:34
1710.86:455:35
1810.86:455:35
1910.86:455:36
2010.96:455:37
2110.96:455:37
2210.96:455:38
2310.96:455:39
2410.96:455:39
2510.96:455:40
2610.96:455:41
2710.96:455:41
2811.06:445:42
2911.06:445:42
3011.06:445:43
3111.06:445:44

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.19 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 4.62 kWh/m² in June across the year — January's 2.19 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.3Moderate
72.2Moderate
82.2Moderate
92.2Moderate
102.2Moderate
112.2Moderate
122.2Moderate
132.2Moderate
142.2Moderate
152.2Moderate
162.2Moderate
172.2Moderate
182.2Moderate
192.2Moderate
202.2Moderate
212.2Moderate
222.2Moderate
232.2Moderate
242.2Moderate
252.3Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.4Moderate
312.4Moderate
Planning a trip in January

Hazard calendar for Yên Bái

In seasonPeak

In January, Yên Bái sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Yên Bái sits in the Pacific typhoon belt; the season peaks July–October.

Yên Bái's monsoon runs May–September, when most of the year's rain falls.

Pacific typhoon
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Yên Bái?

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

6.1
Sightseeing
5th-best month of the year
3.0
Beach & pool
12th-best month of the year

January is a reasonable time to visit Yên Bái for sightseeing.

What to pack for Yên Bái in January

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

In January, Yên Bái sees daytime highs around 20°C and nights near 14°C. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Yên Bái in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yên Bái peaks around June 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 19 at about 5 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 22UV 13Nov 19UV 5
UV index (midday)Level
Jan6High
Feb7High
Mar10Very high
Apr6High
May8Very high
Jun13Extreme
Jul12Extreme
Aug11Extreme
Sep8Very high
Oct7High
Nov5High
Dec6High

Air quality in Yên Bái 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 Yên Bái is worst in December — around 83 µg/m³ PM2.5 (unhealthy), about 2.9× the cleanest month (July, 29 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyDec 2383 µg/m³Jul 2029 µg/m³
PM2.5 (µg/m³)Level
Jan83Unhealthy
Feb78Unhealthy
Mar78Unhealthy
Apr72Unhealthy
May50Poor
Jun36Poor
Jul29Moderate
Aug32Moderate
Sep42Poor
Oct57Unhealthy
Nov73Unhealthy
Dec83Unhealthy
Location & terrain

Where is Yên Bái?

Yên Bái sits at 21.7°N, 104.9°E, 45 m above sea level, in Vietnam. The nearest listed city is Tuyên Quang, 33 km away.

Topography around Yên Bái

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

Within 3 km, the terrain around Yên Bái has only modest variations in elevation — a maximum elevation change of 126 m around an average of 63 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 707 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,934 m.

The land around Yên Bái is covered by trees (79%) within 3 km, trees (80%) within 16 km, and trees (86%) within 80 km.

3 km
126 m
16 km
707 m
80 km
2,934 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Tuyên Quang 33 km · Nghĩa Lộ 43 km · Phú Thọ 48 km · Việt Trì 68 km · Cổ Đô 68 km · Thị Trấn Đại Từ 76 km · Thị Trấn Việt Quang 78 km · Bắc Quang 85 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 1%

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 Yên Bái (21.7229°, 104.9113°, elevation 45 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).