Thái Nguyên in Fall

In fall (September, October and November), Thái Nguyên sees average daytime highs around 29°C and overnight lows near 22°C, with 397 mm of rain over about 39 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.

Over the season highs ease from about 32°C in early September to 24°C by late November. The sky is clear or mostly clear about 28% of the time across fall, and the air most often feels oppressive.

Fall is Thái Nguyên's 2nd-best season to visit on our travel score. For the whole year in context, see Thái Nguyên's year-round climate.

Avg daytime high
29°C
2nd-warmest season
Avg overnight low
22°C
Rainfall
397 mm
39 wet days
Avg wind
6 km/h
Travel score
5.2
2nd-best season
Months
Sep · Oct · Nov

Temperature in Thái Nguyên in Fall

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 32°C in early September to 24°C by late November.

A typical fall day in Thái Nguyên reaches about 29°C and drops to 22°C overnight. The warmest of the three months is September, the coolest November.

10°15°20°25°30°35°SepOctNov

How fall really feels in Thái Nguyên

Once humidity and wind are folded in, fall brings about 42 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C
42
6 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Thái Nguyên weather by month

How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 14°5911.210.85.7
Feb21° / 15°471111.35.8
Mar24° / 18°8214.911.85.7
Apr28° / 21°11714.812.55.0
May31° / 24°26819.7133.3
Jun33° / 26°34521.313.32.5
Jul32° / 26°35323.813.22.4
Aug32° / 26°38024.612.72.5
Sep31° / 25°2271912.13.4
Oct29° / 22°10712.211.55.3
Nov26° / 18°627.7117.0
Dec21° / 15°418.110.76.7

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time across fall.

0%25%50%75%100%SepOctNov

Chance of precipitation in Fall

Any precipitation

Thái Nguyên gets around 397 mm of rain over 39 wet days across fall. The line is the day-by-day chance of measurable precipitation.

0%20%40%60%80%SepOctNov

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

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

0%25%50%75%100%SepOctNov

Wind in Fall

Winds average 6 km/h across fall.

0246810SepOctNov

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 24 min in early September to 10 h 48 min by late November. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMSepOctNov

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 3.8 kWh/m².

012345SepOctNov
Planning a trip in fall

Hazard calendar for Thái Nguyên

In seasonPeak

In fall, Thái Nguyên overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Thái Nguyên'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 fall a good time to visit Thái Nguyên?

Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

5.2
Sightseeing
2nd-best month of the year
6.0
Beach & pool
1st-best month of the year

fall is a reasonable time to visit Thái Nguyên for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Thái Nguyên in Fall

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

In fall, Thái Nguyên sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 39 days see rain.

light clothesrain gear

UV index in Thái Nguyên in Fall

LowModerateHighVery highExtreme

Clear-sky midday UV across fall averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thái Nguyên peaks around July 11 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 highHighJul 11UV 11Nov 23UV 6
UV index (midday)Level
Jan6High
Feb7High
Mar9Very high
Apr6High
May9Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep8Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Thái Nguyên in Fall

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Thái Nguyên is worst in December — around 102 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (July, 37 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 20102 µg/m³Jul 1738 µg/m³
PM2.5 (µg/m³)Level
Jan98Unhealthy
Feb89Unhealthy
Mar86Unhealthy
Apr79Unhealthy
May57Unhealthy
Jun44Poor
Jul37Poor
Aug44Poor
Sep59Unhealthy
Oct76Unhealthy
Nov92Unhealthy
Dec102Unhealthy
Location & terrain

Where is Thái Nguyên?

Thái Nguyên sits at 21.6°N, 105.8°E, 36 m above sea level, in Vietnam. The nearest listed city is Thành phố Sông Công, 13 km away.

Topography around Thái Nguyên

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

Within 3 km, the terrain around Thái Nguyên has only modest variations in elevation — a maximum elevation change of 46 m around an average of 30 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 597 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.

The land around Thái Nguyên is covered by trees (39%) and artificial surfaces (39%) within 3 km, trees (76%) within 16 km, and trees (74%) within 80 km.

3 km
46 m
16 km
597 m
80 km
1,720 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Fall weather nearby: Thành phố Sông Công 13 km · Phổ Yên 20 km · Thị Trấn Đại Từ 22 km · Sóc Sơn 37 km · Vĩnh Yên 41 km · Phúc Yên 42 km · Quang Minh 46 km · Việt Yên 47 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 Thái Nguyên (21.5942°, 105.8482°, elevation 36 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.