Bắc Kạn weather in May

In May, Bắc Kạn sees average daytime highs of 29°C and overnight lows near 22°C, with 267 mm of rain across 22.5 wet days and about 13 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 29°C by the end. The sky is clear or mostly clear about 9% 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 Bắc Kạn's 6th-clearest and 5th-windiest month. For the whole year in context, see Bắc Kạn's year-round climate.

Daytime high
29°
5th warmest
Overnight low
22°
8th coldest
Rainfall
267 mm
22.5 wet days
Daylight
13 h 06 min
5:21 AM – 6:25 PM
Cloud cover
78%
6th clearest
Wind
5 km/h
5th windiest
Solar energy
4.3 kWh/m²
Travel score
3.9
out of 10

Bắc Kạn is city in Vietnam.

Density
329/km²
people per km²
Founded
2015

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 29°C by the end.

A typical May day in Bắc Kạn 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 25°C and 32°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)
12821
22821
32821
42821
52821
62822
72822
82822
92822
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212923
222923
232923
242923
252923
262923
272923
282923
293023
303023
313023

How May really feels in Bắc Kạn

Once humidity and wind are folded in, May 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 May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Bắc Kạn weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 11°6812.510.84.9
Feb19° / 13°5911.711.25.3
Mar21° / 16°10116.311.85.3
Apr26° / 19°12817.712.55.2
May29° / 22°26722.5133.9
Jun30° / 24°38625.813.32.9
Jul30° / 24°39827.813.22.8
Aug30° / 24°34426.712.82.9
Sep29° / 22°18118.912.14.1
Oct27° / 20°8512.511.56.1
Nov23° / 16°689.610.96.7
Dec19° / 12°509.210.76.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 78%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32674
42773
52773
62773
72773
82773
92674
102674
112674
122575
132575
142575
152476
162377
172377
182377
192278
202179
212080
222080
231981
241882
251882
261684
271684
281486
291486
301387
311288

Chance of precipitation in May

Any precipitation

Bắc Kạn gets around 267 mm of rain over 22.5 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 73% and peaks near 80% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
167
267
368
469
569
670
770
871
971
1072
1172
1272
1372
1472
1573
1673
1773
1873
1973
2073
2173
2274
2374
2475
2575
2676
2777
2877
2978
3079
3180

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 54% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
141226544
231226545
331125565
431125556
521025567
621024568
72924569
829235610
929235511
1028235512
1128225513
1228225315
1328225216
1428225117
1517215318
1617215219
1717215120
1817205220
1917205121
2017205022
2116195222
2206195223
2306185323
2405185423
2505175424
2604165525
2704155526
2804145527
2903135628
3003135430
3102125531

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
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
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 5:30 AM to 5:17 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)
112.85:306:18
212.85:296:18
312.85:286:19
412.95:286:19
512.95:276:20
612.95:266:20
712.95:266:21
812.95:256:21
912.95:256:21
1013.05:246:22
1113.05:246:22
1213.05:236:23
1313.05:236:23
1413.05:226:24
1513.05:226:24
1613.15:216:25
1713.15:216:25
1813.15:206:26
1913.15:206:26
2013.15:206:26
2113.15:196:27
2213.15:196:27
2313.25:196:28
2413.25:186:28
2513.25:186:29
2613.25:186:29
2713.25:186:30
2813.25:176:30
2913.25:176:30
3013.25:176:31
3113.25:176:31

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.3 kWh/m².

For context, solar energy here swings from a low near 2.05 kWh/m² to a high of 4.4 kWh/m² in August across the year — May's 4.3 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in May

Hazard calendar for Bắc Kạn

In seasonPeak

In May, Bắc Kạn sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Bắc Kạn'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 May a good time to visit Bắc Kạn?

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

3.9
Sightseeing
9th-best month of the year
4.8
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Bắc Kạn.

What to pack for Bắc Kạn in May

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

In May, Bắc Kạn sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

UV index in Bắc Kạn 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 Bắc Kạn peaks around June 23 at about 12 (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 23UV 12Nov 23UV 6
UV index (midday)Level
Jan6High
Feb7Very high
Mar10Very high
Apr6High
May8Very high
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep9Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Bắc Kạn 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 Bắc Kạn is worst in April — around 48 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (July, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorApr 947 µg/m³Jul 2321 µg/m³
PM2.5 (µg/m³)Level
Jan41Poor
Feb44Poor
Mar47Poor
Apr48Poor
May33Moderate
Jun24Moderate
Jul21Moderate
Aug21Moderate
Sep25Moderate
Oct30Moderate
Nov37Poor
Dec42Poor
Location & terrain

Where is Bắc Kạn?

Bắc Kạn sits at 22.1°N, 105.8°E, 150 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Đại Từ, 61 km away.

Topography around Bắc Kạn

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

Within 3 km, the terrain around Bắc Kạn has significant variations in elevation — a maximum elevation change of 284 m around an average of 189 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,438 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,052 m.

The land around Bắc Kạn is covered by trees (79%) within 3 km, trees (96%) within 16 km, and trees (94%) within 80 km.

3 km
284 m
16 km
1,438 m
80 km
2,052 m
treesgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Thị Trấn Đại Từ 61 km · Thái Nguyên 61 km · Thị Trấn Thất Khê 67 km · Cao Bằng 72 km · Thị Trấn Nước Hai 73 km · Tuyên Quang 73 km · Thành phố Sông Công 74 km · Phổ Yên 81 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 Bắc Kạn (22.147°, 105.8348°, elevation 150 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).