Thị Trấn Na Dương weather in May

In May, Thị Trấn Na Dương sees average daytime highs of 29°C and overnight lows near 23°C, with 204 mm of rain across 20.8 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 Thị Trấn Na Dương's 5th-clearest and 5th-windiest month. For the whole year in context, see Thị Trấn Na Dương's year-round climate.

Daytime high
29°
5th warmest
Overnight low
23°
8th coldest
Rainfall
204 mm
20.8 wet days
Daylight
13 hours
5:17 AM – 6:19 PM
Cloud cover
77%
5th clearest
Wind
9 km/h
5th windiest
Solar energy
4.57 kWh/m²
Travel score
4.1
out of 10

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 Thị Trấn Na Dương reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°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)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122922
132922
142922
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
293023
303024
313024

How May really feels in Thị Trấn Na Dương

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.

Thị Trấn Na Dương 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°509.510.85.1
Feb18° / 12°378.611.35.7
Mar21° / 16°7112.611.85.8
Apr26° / 20°8714.112.55.7
May29° / 23°20420.8134.1
Jun30° / 24°23623.613.33.1
Jul30° / 25°25124.313.23.1
Aug30° / 24°27225.212.73.1
Sep29° / 23°16118.312.14.3
Oct27° / 20°7510.511.56.6
Nov23° / 16°498117.1
Dec19° / 12°427.710.76.3

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%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22476
32575
42575
52773
62773
72773
82773
92773
102773
112674
122674
132575
142575
152575
162476
172476
182377
192278
202179
212080
222080
232080
241981
251981
261783
271783
281783
291684
301684
311585

Chance of precipitation in May

Any precipitation

Thị Trấn Na Dương gets around 204 mm of rain over 20.8 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 67% 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
259
360
461
562
663
763
864
965
1066
1166
1267
1367
1467
1568
1668
1768
1868
1968
2069
2169
2269
2369
2470
2570
2670
2771
2871
2972
3072
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 53% of days. Sticky, muggy-or-worse air turns up on roughly 90% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1051026554
2051025555
3051024556
4041024566
504923577
604922578
713921579
8139205710
9139195612
10139195513
11129185614
12129185416
13129185317
14129175318
15129175219
16128175121
17118165222
18118165123
19118165024
20118155025
21118155026
22117145027
23017145028
24016145029
25016135030
26015125131
27015125032
28014115034
29014105035
3001395136
3100395038

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
288calm
298calm
308calm
318calm

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 5:26 AM to 5:13 AM, and sunset from 6:13 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:266:13
212.85:256:13
312.85:246:14
412.85:246:14
512.95:236:15
612.95:236:15
712.95:226:16
812.95:216:16
912.95:216:16
1012.95:206:17
1113.05:206:17
1213.05:196:18
1313.05:196:18
1413.05:186:19
1513.05:186:19
1613.05:176:19
1713.05:176:20
1813.15:176:20
1913.15:166:21
2013.15:166:21
2113.15:166:22
2213.15:156:22
2313.15:156:23
2413.15:156:23
2513.25:146:23
2613.25:146:24
2713.25:146:24
2813.25:146:25
2913.25:136:25
3013.25:136:26
3113.25:136:26

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.57 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 4.68 kWh/m² in July across the year — May's 4.57 kWh/m² sits near the top of that range.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in May

Hazard calendar for Thị Trấn Na Dương

In seasonPeak

In May, Thị Trấn Na Dương sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Thị Trấn Na Dương'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 Thị Trấn Na Dương?

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

4.1
Sightseeing
9th-best month of the year
5.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Thị Trấn Na Dương for sightseeing.

What to pack for Thị Trấn Na Dương in May

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

In May, Thị Trấn Na Dương sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Thị Trấn Na Dương in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thị Trấn Na Dương peaks around June 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 23UV 12Dec 14UV 6
UV index (midday)Level
Jan7High
Feb7High
Mar9Very high
Apr7Very high
May9Very high
Jun12Extreme
Jul12Extreme
Aug9Very high
Sep9Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Thị Trấn Na Dương 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 Thị Trấn Na Dương is worst in April — around 47 µg/m³ PM2.5 (poor), about 2.5× the cleanest month (July, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 2447 µg/m³Jul 1819 µg/m³
PM2.5 (µg/m³)Level
Jan47Poor
Feb47Poor
Mar45Poor
Apr47Poor
May31Moderate
Jun22Moderate
Jul19Moderate
Aug21Moderate
Sep26Moderate
Oct32Moderate
Nov36Poor
Dec43Poor
Location & terrain

Where is Thị Trấn Na Dương?

Thị Trấn Na Dương sits at 21.7°N, 107.0°E, 287 m above sea level, in Vietnam. The nearest listed city is Lạng Sơn, 26 km away.

Topography around Thị Trấn Na Dương

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Thị Trấn Na Dương.

Within 3 km, the terrain around Thị Trấn Na Dương has only modest variations in elevation — a maximum elevation change of 193 m around an average of 294 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,313 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,567 m.

The land around Thị Trấn Na Dương is covered by trees (47%) and cropland (22%) within 3 km, trees (78%) within 16 km, and trees (87%) within 80 km.

3 km
193 m
16 km
1,313 m
80 km
1,567 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Lạng Sơn 26 km · Chũ 54 km · Thị Trấn Ba Chẽ 59 km · Thị Trấn Tiên Yên 62 km · Thành Phố Uông Bí 77 km · Thị Trấn Đầm Hà 77 km · Thị Trấn Thất Khê 79 km · Thị Trấn Mạo Khê 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 Thị Trấn Na Dương (21.7025°, 106.9555°, elevation 287 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).