Hoàn Lão weather in January

In January, Hoàn Lão sees average daytime highs of 21°C and overnight lows near 18°C, with 125 mm of rain across 17.4 wet days and about 11.1 hours of daylight. It is the 12th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 13% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 hours at the start of January to 11 h 12 min by month's end. Set against the rest of the year, January is Hoàn Lão's 7th-clearest and 6th-windiest month. For the whole year in context, see Hoàn Lão's year-round climate.

Daytime high
21°
12th warmest
Overnight low
18°
1st coldest
Rainfall
125 mm
17.4 wet days
Daylight
11 h 06 min
6:32 AM – 5:35 PM
Cloud cover
76%
7th clearest
Wind
13 km/h
6th windiest
Solar energy
2.83 kWh/m²
Travel score
5.2
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical January day in Hoàn Lão reaches about 21°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, January runs about 1°C cooler than December and about 1°C cooler than February.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12118
22118
32118
42118
52118
62118
72118
82118
92118
102118
112118
122118
132118
142118
152118
162118
172118
182118
192118
202118
212117
222117
232117
242117
252117
262117
272117
282117
292117
302117
312117

How January really feels in Hoàn Lão

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.

Hoàn Lão weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 18°12517.411.15.2
Feb22° / 18°7713.811.45.8
Mar25° / 21°8213.311.96.2
Apr28° / 23°8812.812.45.6
May30° / 26°11214.712.84.2
Jun32° / 27°638.1133.9
Jul32° / 27°941012.93.9
Aug31° / 26°14613.512.63.9
Sep29° / 25°34519.612.13.9
Oct27° / 24°5312411.64.5
Nov25° / 21°36620.911.24.9
Dec22° / 19°22820.3114.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32575
42674
52575
62575
72575
82575
92575
102575
112575
122476
132476
142476
152476
162476
172575
182575
192575
202575
212575
222674
232674
242773
252872
262872
272872
282971
292971
303070
313070

Chance of precipitation in January

Any precipitation

Hoàn Lão gets around 125 mm of rain over 17.4 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 56% and peaks near 57% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
157
257
357
457
557
657
756
856
956
1056
1156
1256
1356
1456
1556
1656
1756
1856
1956
2056
2156
2256
2356
2456
2556
2656
2756
2856
2955
3055
3154

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1101831365
2101831375
391831375
491830375
591830376
691829386
7101829386
8101828386
9101828387
10101927387
11101927377
12102027377
13102026377
14102126377
15102126376
16102226366
17102226366
18102327356
1992327356
2092428345
2192528335
2292529335
2392529325
2492629315
2592629316
2692629316
2792629306
2892528307
29102528307
30102528308
31102428308

Wind in January

Winds average 13 km/h in January.

Across January, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3112light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 hours at the start of January to 11 h 12 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 6:28 AM to 6:31 AM, and sunset from 5:26 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:285:26
211.06:285:27
311.06:295:27
411.06:295:28
511.06:295:28
611.06:305:29
711.06:305:29
811.06:305:30
911.06:305:31
1011.06:315:31
1111.06:315:32
1211.06:315:32
1311.06:315:33
1411.06:315:34
1511.06:315:34
1611.16:325:35
1711.16:325:35
1811.16:325:36
1911.16:325:37
2011.16:325:37
2111.16:325:38
2211.16:325:38
2311.16:325:39
2411.16:325:39
2511.16:325:40
2611.16:325:41
2711.26:325:41
2811.26:315:42
2911.26:315:42
3011.26:315:43
3111.26:315:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.83 kWh/m².

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 5.68 kWh/m² in May across the year — January's 2.83 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.7Moderate
42.7Moderate
52.7Moderate
62.7Moderate
72.7Moderate
82.8Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.8Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
273.0Moderate
283.0Moderate
293.0Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Hazard calendar for Hoàn Lão

In seasonPeak

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

Hoàn Lão sits in the Pacific typhoon belt; the season peaks July–October.

Hoàn Lão's monsoon runs September–November, when most of the year's rain falls.

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

Is January a good time to visit Hoàn Lão?

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

5.2
Sightseeing
4th-best month of the year
3.3
Beach & pool
12th-best month of the year

January is a reasonable time to visit Hoàn Lão for sightseeing.

What to pack for Hoàn Lão in January

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

In January, Hoàn Lão sees daytime highs around 21°C and nights near 18°C. Pack rain gear. About 17 days see rain.

rain gear

Sea temperature near Hoàn Lão in January

The nearest coast averages about 22°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 30°C and coldest in February near 22°C.

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

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar23Refreshing
Apr25Warm
May28Warm
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov26Warm
Dec24Refreshing

UV index in Hoàn Lão in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Hoàn Lão peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highVery highExtremeVery highAug 12UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar10Very high
Apr9Very high
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Hoàn Lão 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 Hoàn Lão is worst in April — around 65 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (July, 13 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateApr 1064 µg/m³Jul 1514 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb26Moderate
Mar62Unhealthy
Apr65Unhealthy
May21Moderate
Jun14Moderate
Jul13Moderate
Aug14Moderate
Sep16Moderate
Oct20Moderate
Nov18Moderate
Dec21Moderate
Location & terrain

Where is Hoàn Lão?

Hoàn Lão sits at 17.6°N, 106.5°E, 10 m above sea level, in Vietnam. The nearest listed city is Đồng Hới, 16 km away.

Cam LộÐông HàHà Tĩnhthị xã Quảng Trị

Topography around Hoàn Lão

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

Within 3 km, the terrain around Hoàn Lão has only modest variations in elevation — a maximum elevation change of 21 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 967 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,612 m.

The land around Hoàn Lão is covered by cropland (41%) within 3 km, water (42%) and trees (35%) within 16 km, and trees (61%) and water (32%) within 80 km.

3 km
21 m
16 km
967 m
80 km
1,612 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Đồng Hới 16 km · Ba Đồn 22 km · Quán Hàu 23 km · Kỳ Anh 59 km · Cam Lộ 99 km · Ðông Hà 104 km · Hà Tĩnh 107 km · thị xã Quảng Trị 115 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 Hoàn Lão (17.5844°, 106.5343°, elevation 10 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).