Yên Bái weather in April

In April, Yên Bái sees average daytime highs of 29°C and overnight lows near 22°C, with 126 mm of rain across 13.1 wet days and about 12.5 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 30°C by the end. The sky is clear or mostly clear about 11% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of April to 12 h 48 min by month's end. Set against the rest of the year, April is Yên Bái's 5th-clearest and 2nd-windiest month. For the whole year in context, see Yên Bái's year-round climate.

Daytime high
29°
7th warmest
Overnight low
22°
6th coldest
Rainfall
126 mm
13.1 wet days
Daylight
12 h 30 min
5:46 AM – 6:16 PM
Cloud cover
74%
5th clearest
Wind
5 km/h
2nd windiest
Solar energy
3.94 kWh/m²
Travel score
5.1
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 April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 30°C by the end.

A typical April day in Yên Bái reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 33°C. Set against its neighbours, April runs about 4°C warmer than March and about 3°C cooler than May.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12620
22620
32720
42720
52721
62721
72721
82821
92821
102821
112821
122821
132822
142922
152922
162922
172922
182922
192922
202922
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023

How April really feels in Yên Bái

Once humidity and wind are folded in, April averages 13 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
13
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Yên Bái weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12575
22674
32674
42773
52773
62773
72872
82971
92971
103070
112971
122971
132971
142971
153070
163169
173070
182971
192971
202872
212872
222872
232773
242773
252872
262872
272872
282971
292971
302971

Chance of precipitation in April

Any precipitation

Yên Bái gets around 126 mm of rain over 13.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 52% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
141
241
342
442
542
642
742
841
941
1041
1141
1240
1340
1440
1540
1640
1741
1841
1942
2042
2143
2244
2345
2446
2547
2648
2749
2850
2951
3052

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 40% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1482033323
2482032324
3371933335
4361932346
5361831357
6261830358
72518293610
82517283711
92517273712
101517263813
111516253815
121515243916
131415234018
141414224019
151414214021
160413204122
170312204123
180312194124
190311194225
200210194226
210210184327
22029184428
23018184429
24017174430
25017174431
26016174433
27016164334
28005164335
29005164237
30004164138

Wind in April

Winds average 5 km/h in April.

Across April, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 12 min at the start of April to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over April. Sunrise moves from 5:59 AM to 5:35 AM, and sunset from 6:11 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:596:11
212.25:586:11
312.25:576:11
412.35:576:12
512.35:566:12
612.35:556:12
712.35:546:13
812.35:536:13
912.45:526:13
1012.45:516:14
1112.45:506:14
1212.45:496:14
1312.45:486:15
1412.55:476:15
1512.55:466:15
1612.55:466:16
1712.55:456:16
1812.55:446:16
1912.65:436:17
2012.65:426:17
2112.65:416:17
2212.65:416:18
2312.65:406:18
2412.75:396:18
2512.75:386:19
2612.75:376:19
2712.75:376:20
2812.75:366:20
2912.85:356:20
3012.85:356:21

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 3.94 kWh/m².

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 — April's 3.94 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.4Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.7Moderate
93.7Moderate
103.8Moderate
113.8Moderate
123.9Moderate
133.9Moderate
143.9Moderate
154.0Moderate
164.0Bright
174.0Bright
184.1Bright
194.1Bright
204.1Bright
214.2Bright
224.2Bright
234.2Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in April

Hazard calendar for Yên Bái

In seasonPeak

In April, 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 April a good time to visit Yên Bái?

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

5.1
Sightseeing
7th-best month of the year
6.0
Beach & pool
3rd-best month of the year

April is a reasonable time to visit Yên Bái for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Yên Bái in April

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

In April, Yên Bái sees daytime highs around 29°C and nights near 22°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.

light clothesrain gear

UV index in Yên Bái in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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
April 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).