Tân An weather in January

In January, Tân An sees average daytime highs of 31°C and overnight lows near 23°C, with 28 mm of rain across 4.2 wet days and about 11.5 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 26% 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 30 min by month's end. Set against the rest of the year, January is Tân An's 4th-clearest and 8th-windiest month. For the whole year in context, see Tân An's year-round climate.

Daytime high
31°
11th warmest
Overnight low
23°
1st coldest
Rainfall
28 mm
4.2 wet days
Daylight
11 h 24 min
6:20 AM – 5:47 PM
Cloud cover
61%
4th clearest
Wind
8 km/h
8th windiest
Solar energy
5.16 kWh/m²
Travel score
5.3
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical January day in Tân An reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How January really feels in Tân An

Once humidity and wind are folded in, January averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tân An weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°284.211.55.3
Feb31° / 24°11211.75.1
Mar33° / 25°254.511.94.1
Apr34° / 26°7011.912.23.0
May33° / 26°19424.512.52.2
Jun32° / 26°23727.312.62.2
Jul31° / 25°2382912.62.3
Aug31° / 25°2602912.32.3
Sep31° / 25°29428.112.12.3
Oct31° / 25°28727.411.82.6
Nov31° / 25°13916.811.53.7
Dec30° / 24°709.911.44.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 21% 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
34060
44357
54357
64456
74654
84654
94753
104753
114753
124753
134852
144852
154753
164753
174852
184852
194753
204753
214852
224852
234753
244852
254852
264951
274951
285050
295149
305248
315248

Chance of precipitation in January

Any precipitation

Tân An gets around 28 mm of rain over 4.2 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 14% and peaks near 21% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
121
220
319
418
517
616
715
815
914
1014
1114
1213
1313
1413
1513
1614
1714
1814
1914
2014
2114
2213
2313
2413
2513
2612
2712
2811
2911
3010
319

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1228628
2228637
3228637
4228646
5229636
6229645
7229645
8229654
9230644
10230644
11230644
12331624
13331624
14332614
15333604
16333604
17334594
18335584
19335584
20436564
21437554
22438544
23438544
24439534
25440524
26441514
27442504
28542503
29543493
30543493
31544493

Wind in January

Winds average 8 km/h in January.

Across January, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 24 min at the start of January to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:16 AM to 6:22 AM, and sunset from 5:39 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:165:39
211.46:165:40
311.46:165:40
411.46:175:41
511.46:175:41
611.46:185:42
711.46:185:42
811.46:185:43
911.46:185:43
1011.46:195:44
1111.46:195:44
1211.46:195:45
1311.46:205:45
1411.46:205:46
1511.46:205:46
1611.46:205:47
1711.56:205:47
1811.56:215:48
1911.56:215:48
2011.56:215:49
2111.56:215:49
2211.56:215:50
2311.56:215:50
2411.56:215:51
2511.56:225:51
2611.56:225:52
2711.56:225:52
2811.56:225:53
2911.56:225:53
3011.56:225:53
3111.56:225:54

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.16 kWh/m².

For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 6.24 kWh/m² in March across the year — January's 5.16 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.4Bright
265.4Bright
275.4Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in January

Hazard calendar for Tân An

In seasonPeak

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

Tân An sits in the Pacific typhoon belt; the season peaks July–October.

Tân An'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 Tân An?

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

5.3
Sightseeing
1st-best month of the year
7.5
Beach & pool
2nd-best month of the year

January is a reasonable time to visit Tân An for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Tân An in January

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

In January, Tân An sees daytime highs around 31°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Tân An 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 54 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 Tân An in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Tân An peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 18 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 23UV 13Nov 18UV 9
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep13Extreme
Oct9Very high
Nov9Very high
Dec9Very high

Air quality in Tân An 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 Tân An is worst in December — around 49 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (August, 28 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 1549 µg/m³Aug 1228 µg/m³
PM2.5 (µg/m³)Level
Jan46Poor
Feb38Poor
Mar33Moderate
Apr32Moderate
May32Moderate
Jun31Moderate
Jul29Moderate
Aug28Moderate
Sep34Moderate
Oct41Poor
Nov47Poor
Dec49Poor
Location & terrain

Where is Tân An?

Tân An sits at 10.5°N, 106.4°E, 4 m above sea level, in Vietnam. The nearest listed city is Mỹ Tho, 20 km away.

Topography around Tân An

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

Within 3 km, the terrain around Tân An has only modest variations in elevation — a maximum elevation change of 12 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 18 m; within 80 km, significant variations in elevation — a maximum elevation change of 588 m.

The land around Tân An is covered by artificial surfaces (37%) and trees (35%) within 3 km, trees (41%) and cropland (36%) within 16 km, and trees (34%) and cropland (34%) within 80 km.

3 km
12 m
16 km
18 m
80 km
588 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Mỹ Tho 20 km · Cần Đước 21 km · Cần Giuộc 29 km · Bến Tre 33 km · Gò Công 33 km · Quận Sáu 35 km · Chợ Lớn 35 km · Quận Mười Một 36 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 Tân An (10.5359°, 106.4137°, elevation 4 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).