Rạch Giá weather in January

In January, Rạch Giá sees average daytime highs of 29°C and overnight lows near 24°C, with 22 mm of rain across 4.5 wet days and about 11.5 hours of daylight. It is the 7th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 28% 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 Rạch Giá's 3rd-clearest and 9th-windiest month. For the whole year in context, see Rạch Giá's year-round climate.

Daytime high
29°
7th warmest
Overnight low
24°
1st coldest
Rainfall
22 mm
4.5 wet days
Daylight
11 h 30 min
6:25 AM – 5:53 PM
Cloud cover
61%
3rd clearest
Wind
11 km/h
9th windiest
Solar energy
5.03 kWh/m²
Travel score
6.1
out of 10

Rạch Giá is the former provincial capital of the former Kien Giang province, Vietnam.

Density
4,422/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical January day in Rạch Giá reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°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)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How January really feels in Rạch Giá

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.

Rạch Giá weather by month

How January compares with the rest of the year at a glance. January is the 7th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°224.511.56.1
Feb30° / 24°122.511.75.8
Mar31° / 26°376.811.94.7
Apr32° / 27°8814.612.23.7
May30° / 27°24426.412.52.9
Jun29° / 27°31627.612.63.0
Jul29° / 26°34428.612.53.1
Aug29° / 26°32628.312.33.2
Sep29° / 26°35327.712.13.1
Oct29° / 26°30227.811.83.1
Nov30° / 25°12017.111.54.2
Dec29° / 24°579.111.45.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24258
34357
44357
54456
64555
74654
84654
94555
104654
114654
124654
134654
144654
154654
164654
174654
184654
194753
204753
214753
224951
234951
245050
255050
265149
275149
285248
295347
305446
315446

Chance of precipitation in January

Any precipitation

Rạch Giá gets around 22 mm of rain over 4.5 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 15% and peaks near 18% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
118
218
317
416
516
615
715
815
914
1015
1115
1215
1315
1415
1516
1616
1716
1816
1916
2016
2116
2216
2316
2415
2515
2614
2714
2813
2912
3012
3111

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 64% 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 (%)
11527643
20527662
30427672
40427672
50427672
60427681
70428671
80428671
90428671
100429661
110429661
120429661
130430651
140430651
150430651
160431641
170431641
181431640
191432630
201432630
211432630
221433620
231433620
241433620
251434610
261334620
271335610
281335610
291336600
301336600
310336610

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 10 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
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 6:20 AM to 6:26 AM, and sunset from 5:46 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:205:46
211.46:205:46
311.46:215:47
411.46:215:47
511.46:225:48
611.46:225:48
711.46:225:49
811.46:235:49
911.46:235:50
1011.46:235:50
1111.56:245:51
1211.56:245:51
1311.56:245:52
1411.56:245:52
1511.56:255:53
1611.56:255:53
1711.56:255:54
1811.56:255:54
1911.56:255:55
2011.56:255:55
2111.56:265:56
2211.56:265:56
2311.56:265:56
2411.56:265:57
2511.56:265:57
2611.56:265:58
2711.56:265:58
2811.56:265:59
2911.56:265:59
3011.66:265:59
3111.66:266:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.03 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 5.98 kWh/m² in March across the year — January's 5.03 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.4Bright
Planning a trip in January

Hazard calendar for Rạch Giá

In seasonPeak

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

Rạch Giá sits in the Pacific typhoon belt; the season peaks July–October.

Rạch Giá's monsoon runs May–October, 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 Rạch Giá?

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

6.1
Sightseeing
1st-best month of the year
7.8
Beach & pool
2nd-best month of the year

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

What to pack for Rạch Giá in January

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

In January, Rạch Giá sees daytime highs around 29°C and nights near 24°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near Rạch Giá in January

The nearest coast averages about 27°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 26 km away) is warmest in May at about 31°C and coldest in January near 27°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Rạch Giá 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 Rạch Giá peaks around August 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highAug 21UV 13Dec 15UV 9
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct9Very high
Nov9Very high
Dec9Very high

Air quality in Rạch Giá 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 Rạch Giá is worst in January — around 45 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (August, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 145 µg/m³Aug 1519 µg/m³
PM2.5 (µg/m³)Level
Jan45Poor
Feb37Poor
Mar33Moderate
Apr32Moderate
May27Moderate
Jun22Moderate
Jul22Moderate
Aug19Moderate
Sep23Moderate
Oct32Moderate
Nov42Poor
Dec45Poor
Location & terrain

Where is Rạch Giá?

Rạch Giá sits at 10.0°N, 105.1°E, 13 m above sea level, in Vietnam. The nearest listed city is Xóm Cái Nước, 24 km away.

Topography around Rạch Giá

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

Within 3 km, the terrain around Rạch Giá has only modest variations in elevation — a maximum elevation change of 13 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 13 m; within 80 km, large variations in elevation — a maximum elevation change of 691 m.

The land around Rạch Giá is covered by water (33%) and artificial surfaces (30%) within 3 km, cropland (49%) and water (35%) within 16 km, and cropland (51%) and water (32%) within 80 km.

3 km
13 m
16 km
13 m
80 km
691 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
January weather nearby: Xóm Cái Nước 24 km · Kiên Hải 26 km · Óc Eo 27 km · Núi Sập 35 km · Cô Tô 38 km · Cờ Đỏ 39 km · Vĩnh Thạnh 42 km · Vị Thanh 50 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 Rạch Giá (10.0124°, 105.0809°, elevation 13 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).