Yên Bái in Fall

In fall (September, October and November), Yên Bái sees average daytime highs around 28°C and overnight lows near 22°C, with 407 mm of rain over about 40 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 23°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 Yên Bái's 2nd-best season to visit on our travel score. For the whole year in context, see Yên Bái's year-round climate.

Avg daytime high
28°C
2nd-warmest season
Avg overnight low
22°C
Rainfall
407 mm
40 wet days
Avg wind
4 km/h
Travel score
5.2
2nd-best season
Months
Sep · Oct · Nov

Temperature in Yên Bái in Fall

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 32°C in early September to 23°C by late November.

A typical fall day in Yên Bái reaches about 28°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 Yên Bái

Once humidity and wind are folded in, fall brings about 43 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C
43
9 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.

Yên Bái 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
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 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

Yên Bái gets around 407 mm of rain over 40 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 4 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 3.6 kWh/m².

012345SepOctNov
Planning a trip in fall

Hazard calendar for Yên Bái

In seasonPeak

In fall, Yên Bái overlaps its pacific typhoon and monsoon 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 fall a good time to visit Yên Bái?

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 Yên Bái for sightseeing.

What to pack for Yên Bái in Fall

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

In fall, Yên Bái sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. About 40 days see rain.

light clothesrain gear

UV index in Yên Bái in Fall

LowModerateHighVery highExtreme

Clear-sky midday UV across fall averages 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 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 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
Fall 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.