Duyên Hải weather in January

In January, Duyên Hải sees average daytime highs of 27°C and overnight lows near 25°C, with 23 mm of rain across 2.8 wet days and about 11.5 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 31% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 24 min at the start of January to 11 h 36 min by month's end. Set against the rest of the year, January is Duyên Hải's 4th-clearest and 2nd-windiest month. For the whole year in context, see Duyên Hải's year-round climate.

Daytime high
27°
12th warmest
Overnight low
25°
1st coldest
Rainfall
23 mm
2.8 wet days
Daylight
11 h 30 min
6:18 AM – 5:48 PM
Cloud cover
59%
4th clearest
Wind
20 km/h
2nd windiest
Solar energy
5.33 kWh/m²
Travel score
7.4
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Duyên Hải reaches about 27°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202724
212724
222724
232724
242724
252724
262724
272724
282724
292724
302724
312724

How January really feels in Duyên Hải

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

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Duyên Hải weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°232.811.57.4
Feb27° / 25°6111.77.8
Mar29° / 26°213.511.96.6
Apr30° / 27°5810.412.25.0
May31° / 27°17024.212.43.1
Jun30° / 26°20727.112.62.8
Jul30° / 26°19728.712.52.9
Aug30° / 26°19528.812.32.9
Sep29° / 26°22527.812.12.9
Oct29° / 26°27627.411.83.3
Nov29° / 26°16016.611.64.7
Dec28° / 25°869.211.46.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
24060
34159
44258
54258
64357
74456
84456
94654
104654
114654
124654
134654
144654
154753
164753
174753
184654
194654
204852
214951
224951
235050
245050
255149
265149
275248
285347
295347
305545
315545

Chance of precipitation in January

Any precipitation

Duyên Hải gets around 23 mm of rain over 2.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 10% and peaks near 17% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
117
216
315
414
513
612
711
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910
2010
2110
229
239
248
258
267
277
286
296
305
315

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1120745
2121735
3021745
4022735
5022735
6023725
7024715
8024715
9025705
10026695
11027685
12027685
13128665
14128674
15128674
16129664
17129664
18129664
19130663
20130663
21130663
22131653
23131653
24131662
25132652
26132652
27133642
28133642
29134632
30134641
31135631

Wind in January

Winds average 20 km/h in January.

Across January, daily wind ranges from about 18 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1520light breeze
1620light breeze
1720light breeze
1820light breeze
1920light breeze
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 24 min at the start of January to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:14 AM to 6:20 AM, and sunset from 5:41 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:145:41
211.46:145:41
311.56:155:42
411.56:155:42
511.56:155:43
611.56:165:43
711.56:165:44
811.56:165:44
911.56:175:45
1011.56:175:45
1111.56:175:46
1211.56:185:46
1311.56:185:47
1411.56:185:47
1511.56:185:48
1611.56:185:48
1711.56:195:49
1811.56:195:49
1911.56:195:50
2011.56:195:50
2111.56:195:50
2211.56:205:51
2311.56:205:51
2411.56:205:52
2511.56:205:52
2611.56:205:53
2711.66:205:53
2811.66:205:53
2911.66:205:54
3011.66:205:54
3111.66:205:55

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.33 kWh/m².

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 6.44 kWh/m² in April across the year — January's 5.33 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.0Bright
65.1Bright
75.1Bright
85.1Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in January

Hazard calendar for Duyên Hải

In seasonPeak

In January, Duyên Hải sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Duyên Hải sits in the Pacific typhoon belt; the season peaks July–October.

Duyên Hải's rainy season runs May–November, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Duyên Hải?

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

7.4
Sightseeing
2nd-best month of the year
7.6
Beach & pool
3rd-best month of the year

January is one of the better times to visit Duyên Hải for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Duyên Hải in January

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

In January, Duyên Hải sees daytime highs around 27°C and nights near 25°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Duyên Hải in January

The nearest coast averages about 26°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in May at about 30°C and coldest in January near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Duyên Hải in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Duyên Hải peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 10 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 24UV 13Dec 10UV 10
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct11Extreme
Nov10Very high
Dec10Very high

Air quality in Duyên Hải in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Duyên Hải is worst in December — around 34 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (March, 19 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateDec 1333 µg/m³Mar 1719 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb20Moderate
Mar19Moderate
Apr20Moderate
May22Moderate
Jun24Moderate
Jul25Moderate
Aug23Moderate
Sep28Moderate
Oct33Moderate
Nov30Moderate
Dec34Moderate
Location & terrain

Where is Duyên Hải?

Duyên Hải sits at 9.6°N, 106.5°E, 2 m above sea level, in Vietnam. The nearest listed city is Trà Vinh, 38 km away.

Topography around Duyên Hải

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

Within 3 km, the terrain around Duyên Hải has only modest variations in elevation — a maximum elevation change of 9 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 21 m; within 80 km, only modest variations in elevation — a maximum elevation change of 24 m.

The land around Duyên Hải is covered by water (40%) and trees (21%) within 3 km, water (52%) within 16 km, and water (53%), trees (23%) and cropland (20%) within 80 km.

3 km
9 m
16 km
21 m
80 km
24 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Trà Vinh 38 km · Sóc Trăng 57 km · Vĩnh Châu 66 km · Bến Tre 69 km · Ngã Bảy 76 km · Mỹ Tho 82 km · Gò Công 84 km · Phú Lộc 86 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 Duyên Hải (9.635°, 106.4924°, elevation 2 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).