Bản Na Hỷ weather in January

In January, Bản Na Hỷ sees average daytime highs of 20°C and overnight lows near 12°C, with 21 mm of rain across 5 wet days and about 11 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 27% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of January to 11 h 06 min by month's end. Set against the rest of the year, January is Bản Na Hỷ's 6th-clearest and 5th-windiest month. For the whole year in context, see Bản Na Hỷ's year-round climate.

Daytime high
20°
12th warmest
Overnight low
12°
1st coldest
Rainfall
21 mm
5 wet days
Daylight
10 h 54 min
6:43 AM – 5:39 PM
Cloud cover
66%
6th clearest
Wind
4 km/h
5th windiest
Solar energy
2.88 kWh/m²
Travel score
6.8
out of 10

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 Bản Na Hỷ reaches about 20°C in the afternoon and slips back to 12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 26°C. Set against its neighbours, January runs on par with December and about 2°C cooler than February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12012
22012
32012
42012
52012
62012
72012
82012
92012
102012
112012
122012
132012
142012
152012
162012
172012
182012
192012
202012
212012
222012
232012
242012
252012
262012
272012
282012
292012
302012
312012

How January really feels in Bản Na Hỷ

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.

Bản Na Hỷ 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° / 12°215116.8
Feb22° / 14°175.211.37.2
Mar25° / 16°429.111.96.9
Apr28° / 19°6814.812.45.1
May30° / 22°15522.212.93.4
Jun31° / 23°15822.313.23.0
Jul30° / 23°23324.413.13.1
Aug29° / 22°29826.812.73.2
Sep28° / 21°23122.612.14.1
Oct26° / 19°11815.411.55.8
Nov23° / 16°356.911.17.2
Dec20° / 13°214.910.87.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% 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 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24159
34159
44060
54159
64060
74060
83961
93961
104060
114060
123961
133961
143862
154060
163961
173961
183862
193961
203862
213862
223862
233862
243763
253763
263862
273862
283763
293961
304060
314060

Chance of precipitation in January

Any precipitation

Bản Na Hỷ gets around 21 mm of rain over 5 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 17% and peaks near 17% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
417
517
617
717
817
917
1017
1117
1217
1317
1416
1516
1616
1716
1816
1916
2016
2116
2216
2316
2416
2516
2617
2717
2817
2917
3017
3117

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 40% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13935252
23934252
33934262
43833262
53833262
63832272
73932272
83932272
93932272
103931272
113931272
123931272
133932272
143932272
153932272
163932262
174032262
184032252
194033252
204133252
214133242
224133242
234132242
244232243
254232243
264231243
274231243
284231243
294230244
304130244
314131244

Wind in January

Winds average 4 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
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
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 48 min at the start of January to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:40 AM to 6:42 AM, and sunset from 5:30 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:405:30
210.86:405:31
310.86:415:31
410.96:415:32
510.96:415:32
610.96:415:33
710.96:425:34
810.96:425:34
910.96:425:35
1010.96:425:36
1110.96:425:36
1210.96:435:37
1310.96:435:37
1410.96:435:38
1510.96:435:39
1610.96:435:39
1710.96:435:40
1811.06:435:41
1911.06:435:41
2011.06:435:42
2111.06:435:42
2211.06:435:43
2311.06:435:44
2411.06:435:44
2511.06:435:45
2611.06:435:46
2711.16:435:46
2811.16:425:47
2911.16:425:47
3011.16:425:48
3111.16:425:49

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.88 kWh/m².

For context, solar energy here swings from a low near 2.83 kWh/m² to a high of 5.21 kWh/m² in June across the year — January's 2.88 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
42.9Moderate
52.9Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.9Moderate
102.9Moderate
112.9Moderate
122.9Moderate
132.9Moderate
142.9Moderate
152.9Moderate
162.9Moderate
172.9Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
273.0Moderate
283.0Moderate
293.0Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Hazard calendar for Bản Na Hỷ

In seasonPeak

None of Bản Na Hỷ's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Bản Na Hỷ's monsoon runs May–September, when most of the year's rain falls.

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

Is January a good time to visit Bản Na Hỷ?

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

6.8
Sightseeing
5th-best month of the year
3.4
Beach & pool
12th-best month of the year

January is a reasonable time to visit Bản Na Hỷ for sightseeing.

What to pack for Bản Na Hỷ in January

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

In January, Bản Na Hỷ sees daytime highs around 20°C and nights near 12°C. Little to plan around — just the basics. About 5 days see rain.

UV index in Bản Na Hỷ in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bản Na Hỷ peaks around August 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highHighAug 13UV 14Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar11Extreme
Apr9Very high
May9Very high
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep11Extreme
Oct10Very high
Nov8Very high
Dec6High

Air quality in Bản Na Hỷ 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 Bản Na Hỷ is worst in April — around 162 µg/m³ PM2.5 (very unhealthy), about 19.2× the cleanest month (August, 8 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateGoodModerateApr 14150 µg/m³Aug 159 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb30Moderate
Mar83Unhealthy
Apr162Very unhealthy
May34Moderate
Jun28Moderate
Jul10Good
Aug8Good
Sep11Good
Oct15Moderate
Nov15Moderate
Dec19Moderate
Location & terrain

Where is Bản Na Hỷ?

Bản Na Hỷ sits at 19.6°N, 104.5°E, 303 m above sea level, in Vietnam. The nearest listed city is Thái Hòa, 85 km away.

Thị Trấn Lam SơnVieng XaiXam NuaKim LiênHoàng MaiDiễn ThànhThanh Hóa

Topography around Bản Na Hỷ

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

Within 3 km, the terrain around Bản Na Hỷ has large variations in elevation — a maximum elevation change of 1,158 m around an average of 625 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,938 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,684 m.

The land around Bản Na Hỷ is covered by trees (94%) within 3 km, trees (89%) within 16 km, and trees (91%) within 80 km.

3 km
1,158 m
16 km
1,938 m
80 km
2,684 m
treesgrasslandcroplandwater
January weather nearby: Thái Hòa 85 km · Thị Trấn Lam Sơn 99 km · Vieng Xai 99 km · Xam Nua 108 km · Kim Liên 112 km · Hoàng Mai 128 km · Diễn Thành 130 km · Thanh Hóa 132 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 Bản Na Hỷ (19.5636°, 104.5346°, elevation 303 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).