Từ Sơn weather in January

In January, Từ Sơn sees average daytime highs of 20°C and overnight lows near 15°C, with 37 mm of rain across 7.5 wet days and about 10.9 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 Từ Sơn's 7th-clearest and 5th-windiest month. For the whole year in context, see Từ Sơn's year-round climate.

Daytime high
20°
12th warmest
Overnight low
15°
1st coldest
Rainfall
37 mm
7.5 wet days
Daylight
10 h 48 min
6:40 AM – 5:31 PM
Cloud cover
78%
7th clearest
Wind
9 km/h
5th windiest
Solar energy
2.18 kWh/m²
Travel score
6.3
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 Từ Sơn reaches about 20°C in the afternoon and slips back to 15°C overnight — a 6°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 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)
12115
22115
32115
42115
52115
62115
72115
82115
92015
102015
112015
122015
132015
142015
152015
162015
172014
182014
192014
202014
212014
222014
232014
242014
252014
262014
272014
282015
292015
302015
312015

How January really feels in Từ Sơn

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.

Từ Sơn 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° / 15°377.510.96.3
Feb22° / 16°256.811.36.6
Mar24° / 19°501011.96.5
Apr28° / 22°8710.912.55.3
May32° / 25°23218.2133.3
Jun33° / 27°24219.113.32.4
Jul33° / 27°28021.413.22.3
Aug32° / 26°35024.512.72.4
Sep32° / 25°24819.712.13.2
Oct29° / 23°12512.511.55.1
Nov26° / 19°597.2117.0
Dec22° / 16°31610.77.1

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 9% of January, with mostly cloudy or overcast conditions the remaining 79%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22773
32575
42476
52377
62377
72278
82278
92278
102278
112179
122179
132179
142179
152080
161981
172080
182080
192080
202080
212080
222179
232179
241981
251981
262080
271981
281981
291981
301981
311981

Chance of precipitation in January

Any precipitation

Từ Sơn gets around 37 mm of rain over 7.5 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 24% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
121
222
322
423
523
624
724
824
925
1025
1125
1225
1325
1425
1525
1625
1725
1824
1924
2024
2124
2224
2324
2424
2524
2623
2723
2823
2923
3023
3122

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1461821140
2461821150
3461721151
4461721161
5471620161
6471619171
7481519171
8481518171
9491618171
10491617171
11491617171
12501616171
13501716161
14501716161
15511716151
16511716151
17521716141
18521716141
19531716131
20521717131
21521717131
22521717131
23521618131
24521618131
25531518131
26531518131
27541418131
28531418132
29521418142
30511419142
31511419142

Wind in January

Winds average 9 km/h in January.

Across January, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:37 AM to 6:38 AM, and sunset from 5:21 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:375:21
210.76:375:22
310.76:385:23
410.86:385:23
510.86:385:24
610.86:395:24
710.86:395:25
810.86:395:26
910.86:395:26
1010.86:395:27
1110.86:405:28
1210.86:405:28
1310.86:405:29
1410.86:405:30
1510.86:405:30
1610.86:405:31
1710.96:405:31
1810.96:405:32
1910.96:405:33
2010.96:405:33
2110.96:405:34
2210.96:405:35
2310.96:405:35
2410.96:405:36
2511.06:405:37
2611.06:395:37
2711.06:395:38
2811.06:395:39
2911.06:395:39
3011.06:395:40
3111.06:385:40

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.18 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.18 kWh/m² to a high of 4.92 kWh/m² in June across the year — January's 2.18 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
142.1Moderate
152.1Moderate
162.1Moderate
172.1Moderate
182.2Moderate
192.2Moderate
202.2Moderate
212.2Moderate
222.2Moderate
232.2Moderate
242.2Moderate
252.2Moderate
262.2Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.3Moderate
312.3Moderate
Planning a trip in January

Hazard calendar for Từ Sơn

In seasonPeak

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

Từ Sơn'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 Từ Sơn?

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

6.3
Sightseeing
5th-best month of the year
3.5
Beach & pool
12th-best month of the year

January is a reasonable time to visit Từ Sơn for sightseeing.

What to pack for Từ Sơn in January

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

In January, Từ Sơn sees daytime highs around 20°C and nights near 15°C. Little to plan around — just the basics. About 8 days see rain.

UV index in Từ Sơn 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 Từ Sơn peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 20UV 11Nov 23UV 6
UV index (midday)Level
Jan6High
Feb7Very high
Mar9Very high
Apr6High
May8Very high
Jun11Extreme
Jul10Extreme
Aug9Very high
Sep8Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Từ Sơn 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 Từ Sơn is worst in December — around 171 µg/m³ PM2.5 (very unhealthy), about 3.4× the cleanest month (July, 50 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyVery unhealthyDec 19170 µg/m³Jul 1452 µg/m³
PM2.5 (µg/m³)Level
Jan161Very unhealthy
Feb136Unhealthy
Mar122Unhealthy
Apr106Unhealthy
May76Unhealthy
Jun59Unhealthy
Jul50Poor
Aug68Unhealthy
Sep96Unhealthy
Oct125Unhealthy
Nov152Very unhealthy
Dec171Very unhealthy
Location & terrain

Where is Từ Sơn?

Từ Sơn sits at 21.1°N, 106.0°E, 10 m above sea level, in Vietnam. The nearest listed city is Gia Lâm, 9.0 km away.

Topography around Từ Sơn

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

Within 3 km, the terrain around Từ Sơn has only modest variations in elevation — a maximum elevation change of 40 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 168 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,694 m.

The land around Từ Sơn is covered by artificial surfaces (46%) and cropland (21%) within 3 km, cropland (39%), artificial surfaces (29%) and trees (21%) within 16 km, and trees (53%) and cropland (32%) within 80 km.

3 km
40 m
16 km
168 m
80 km
1,694 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Gia Lâm 9.0 km · Trâu Quỳ 9.0 km · Long Bien 10 km · Cổ Lóa 11 km · Bồ Đề 11 km · Vinhomes Ocean Park 12 km · Thuận Thanh 13 km · Vĩnh Tuy 14 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 Từ Sơn (21.1°, 105.9667°, elevation 10 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).