Thị Trấn Đầm Hà weather in May

In May, Thị Trấn Đầm Hà sees average daytime highs of 27°C and overnight lows near 25°C, with 213 mm of rain across 18.9 wet days and about 13 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 16% of the time in May, and the air most often feels miserable.

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 Đầm Hà's 6th-clearest and 9th-windiest month. For the whole year in context, see Thị Trấn Đầm Hà's year-round climate.

Daytime high
27°
5th warmest
Overnight low
25°
8th coldest
Rainfall
213 mm
18.9 wet days
Daylight
13 hours
5:15 AM – 6:16 PM
Cloud cover
72%
6th clearest
Wind
11 km/h
9th windiest
Solar energy
4.89 kWh/m²
Travel score
5.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical May day in Thị Trấn Đầm Hà reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, May runs about 3°C warmer than April and about 2°C cooler than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12623
22624
32624
42624
52624
62624
72624
82724
92724
102724
112724
122724
132725
142725
152725
162725
172725
182725
192725
202725
212825
222825
232825
242825
252825
262826
272826
282826
292826
302826
312826

How May really feels in Thị Trấn Đầm Hà

Once humidity and wind are folded in, May averages 6 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
6
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 Đầm Hà weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 15°8614.210.85.0
Feb18° / 16°6613.111.35.2
Mar21° / 18°9115.611.85.3
Apr24° / 22°8013.312.56.1
May27° / 25°21318.9135.0
Jun29° / 27°32023.613.33.5
Jul29° / 27°4242513.23.4
Aug29° / 26°4162512.73.5
Sep29° / 26°27619.212.14.5
Oct27° / 24°10911.111.56.7
Nov23° / 20°689.5117.0
Dec19° / 16°629.910.76.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 70%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
43961
54060
64060
73961
84060
93961
103862
113862
123763
133664
143565
153367
163268
173169
182971
192872
202773
212674
222476
232377
242278
252179
262179
272080
282080
291981
301882
311783

Chance of precipitation in May

Any precipitation

Thị Trấn Đầm Hà gets around 213 mm of rain over 18.9 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 60% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
148
249
351
452
553
654
755
856
957
1057
1158
1258
1359
1459
1560
1660
1760
1861
1961
2062
2163
2263
2364
2465
2566
2667
2768
2868
2969
3070
3171

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 52% 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 (%)
126174827
215174730
315164532
415164434
514164237
614154139
714154041
814143843
913143745
1013133646
1113133548
1213123549
1313123450
1413123351
1513113352
1613113352
1713113253
1813103254
1913103254
2013103155
211393057
220293059
230292960
240282862
250282763
260272665
270172567
280162469
290162370
300152272
310152074

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 5:24 AM to 5:11 AM, and sunset from 6:10 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:246:10
212.85:236:10
312.85:226:11
412.85:226:11
512.85:216:12
612.95:206:12
712.95:206:12
812.95:196:13
912.95:196:13
1012.95:186:14
1112.95:186:14
1213.05:176:15
1313.05:176:15
1413.05:166:15
1513.05:166:16
1613.05:156:16
1713.05:156:17
1813.05:156:17
1913.15:146:18
2013.15:146:18
2113.15:146:19
2213.15:136:19
2313.15:136:19
2413.15:136:20
2513.15:126:20
2613.15:126:21
2713.25:126:21
2813.25:126:22
2913.25:126:22
3013.25:116:22
3113.25:116:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.89 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 4.89 kWh/m² in May across the year — May's 4.89 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
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Thị Trấn Đầm Hà

In seasonPeak

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

Thị Trấn Đầm Hà sits in the Pacific typhoon belt; the season peaks July–October.

Thị Trấn Đầm Hà'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 Thị Trấn Đầm Hà?

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

5.0
Sightseeing
7th-best month of the year
5.2
Beach & pool
4th-best month of the year

May is a reasonable time to visit Thị Trấn Đầm Hà for sightseeing.

What to pack for Thị Trấn Đầm Hà in May

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

In May, Thị Trấn Đầm Hà sees daytime highs around 27°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Thị Trấn Đầm Hà in May

The nearest coast averages about 27°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 26 km away) is warmest in August at about 30°C and coldest in February near 19°C.

It's comfortable for a long swim from Mar 15 to Jan 4 — about 9.7 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb19Cool
Mar20Refreshing
Apr23Refreshing
May27Warm
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov25Warm
Dec21Refreshing

UV index in Thị Trấn Đầm Hà in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (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 Đầm Hà peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 highHighJul 11UV 12Dec 19UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar9Very high
Apr8Very high
May10Extreme
Jun12Extreme
Jul12Extreme
Aug9Very high
Sep10Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Thị Trấn Đầm Hà 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 Đầm Hà is worst in January — around 42 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (July, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 2342 µg/m³Jul 1716 µg/m³
PM2.5 (µg/m³)Level
Jan42Poor
Feb42Poor
Mar41Poor
Apr40Poor
May26Moderate
Jun19Moderate
Jul16Moderate
Aug18Moderate
Sep21Moderate
Oct27Moderate
Nov29Moderate
Dec39Poor
Location & terrain

Where is Thị Trấn Đầm Hà?

Thị Trấn Đầm Hà sits at 21.4°N, 107.6°E, 19 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Tiên Yên, 20 km away.

Topography around Thị Trấn Đầm Hà

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

Within 3 km, the terrain around Thị Trấn Đầm Hà has only modest variations in elevation — a maximum elevation change of 58 m around an average of 17 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,238 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,582 m.

The land around Thị Trấn Đầm Hà is covered by trees (51%) and cropland (36%) within 3 km, trees (44%) and water (41%) within 16 km, and trees (55%) and water (40%) within 80 km.

3 km
58 m
16 km
1,238 m
80 km
1,582 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
May weather nearby: Thị Trấn Tiên Yên 20 km · Thị Trấn Ba Chẽ 34 km · Móng Cái 43 km · Cẩm Phả Mines 48 km · Cẩm Phả 51 km · Ha Long 70 km · Thị Trấn Na Dương 77 km · Cát Bà 90 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 Đầm Hà (21.3531°, 107.5972°, elevation 19 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).