Hòa Bình weather in May

In May, Hòa Bình sees average daytime highs of 30°C and overnight lows near 23°C, with 241 mm of rain across 20.4 wet days and about 13 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 10% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 48 min at the start of May to 13 h 12 min by month's end. Set against the rest of the year, May is Hòa Bình's 9th-clearest and 4th-windiest month. For the whole year in context, see Hòa Bình's year-round climate.

Daytime high
30°
4th warmest
Overnight low
23°
9th coldest
Rainfall
241 mm
20.4 wet days
Daylight
13 hours
5:25 AM – 6:25 PM
Cloud cover
78%
9th clearest
Wind
5 km/h
4th windiest
Solar energy
4.86 kWh/m²
Travel score
3.6
out of 10

Hòa Bình is provincial city of Hoa Binh, Vietnam.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Hòa Bình reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 35°C. Set against its neighbours, May runs about 3°C warmer than April and about 1°C cooler than June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
23022
33022
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183024
193024
203024
213024
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How May really feels in Hòa Bình

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Hòa Bình weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 13°398.210.96.0
Feb20° / 14°256.811.36.3
Mar23° / 17°529.811.96.5
Apr28° / 21°9813.412.55.4
May30° / 23°24120.4133.6
Jun32° / 25°24020.713.22.9
Jul31° / 25°30323.813.12.8
Aug30° / 25°38225.912.72.9
Sep29° / 23°27421.112.13.9
Oct27° / 21°13914.611.55.8
Nov24° / 18°567.6117.1
Dec20° / 14°306.710.86.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, 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 (%)
13070
23070
33070
43070
53070
63070
72971
82971
92971
102773
112773
122575
132476
142377
152278
162080
172080
181981
191981
201783
211684
221585
231585
241486
251486
261387
271387
281387
291387
301387
311387

Chance of precipitation in May

Any precipitation

Hòa Bình gets around 241 mm of rain over 20.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 66% and peaks near 73% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
158
258
359
459
559
660
760
861
961
1062
1162
1263
1364
1465
1565
1666
1767
1867
1968
2068
2169
2269
2370
2470
2571
2672
2772
2872
2973
3073
3173

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
126186014
215176115
315176017
415166018
515165919
614155921
714155822
814145724
914135725
1014135527
1114125528
1214125330
1314125132
1414115034
1514114935
1614104837
1703104739
1803104640
1903104542
200394444
210394345
220394147
230294049
240283951
250283852
260273754
270273556
280163459
290163360
300163261
310153163

Wind in May

Winds average 5 km/h in May.

Across May, 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.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 48 min at the start of May to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:33 AM to 5:21 AM, and sunset from 6:18 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:336:18
212.85:336:19
312.85:326:19
412.85:316:20
512.85:316:20
612.85:306:20
712.95:306:21
812.95:296:21
912.95:296:22
1012.95:286:22
1112.95:286:22
1212.95:276:23
1312.95:276:23
1413.05:266:24
1513.05:266:24
1613.05:256:25
1713.05:256:25
1813.05:256:25
1913.05:246:26
2013.05:246:26
2113.15:236:27
2213.15:236:27
2313.15:236:28
2413.15:236:28
2513.15:226:28
2613.15:226:29
2713.15:226:29
2813.15:226:30
2913.15:226:30
3013.25:216:30
3113.25:216:31

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.86 kWh/m².

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 4.92 kWh/m² in June across the year — May's 4.86 kWh/m² sits near the top of that range.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Hòa Bình

In seasonPeak

In May, Hòa Bình sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.

Hòa Bình sits in the Pacific typhoon belt; the season peaks July–October.

Hòa Bình'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 May a good time to visit Hòa Bình?

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

3.6
Sightseeing
9th-best month of the year
5.0
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Hòa Bình.

What to pack for Hòa Bình in May

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

In May, Hòa Bình sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Hòa Bình in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hòa Bình peaks around June 20 at about 13 (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 highExtremeVery highHighJun 20UV 13Nov 23UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar10Very high
Apr8Very high
May8Very high
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep8Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Hòa Bình in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Hòa Bình is worst in April — around 98 µg/m³ PM2.5 (unhealthy), about 3.8× the cleanest month (July, 26 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyApr 1494 µg/m³Jul 2026 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar76Unhealthy
Apr98Unhealthy
May57Unhealthy
Jun32Moderate
Jul26Moderate
Aug28Moderate
Sep39Poor
Oct53Poor
Nov66Unhealthy
Dec77Unhealthy
Location & terrain

Where is Hòa Bình?

Hòa Bình sits at 20.8°N, 105.3°E, 31 m above sea level, in Vietnam. The nearest listed city is Bo, 26 km away.

Topography around Hòa Bình

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

Within 3 km, the terrain around Hòa Bình has significant variations in elevation — a maximum elevation change of 404 m around an average of 77 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,115 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,857 m.

The land around Hòa Bình is covered by trees (51%) and artificial surfaces (22%) within 3 km, trees (83%) within 16 km, and trees (69%) within 80 km.

3 km
404 m
16 km
1,115 m
80 km
1,857 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Bo 26 km · Xuân Mai 27 km · Ba Vì 30 km · Sơn Tây 40 km · Đan Phượng 45 km · Vinhomes Smart City 47 km · Tây Mỗ 47 km · Dại Mỗ 48 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 Hòa Bình (20.8172°, 105.3376°, elevation 31 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).