Chom Bueng weather in January

In January, Chom Bueng sees average daytime highs of 30°C and overnight lows near 20°C, with 15 mm of rain across 2.9 wet days and about 11.3 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 53% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 12 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is Chom Bueng's 2nd-clearest and 8th-windiest month. For the whole year in context, see Chom Bueng's year-round climate.

Daytime high
30°
9th warmest
Overnight low
20°
1st coldest
Rainfall
15 mm
2.9 wet days
Daylight
11 h 18 min
6:53 AM – 6:09 PM
Cloud cover
43%
2nd clearest
Wind
6 km/h
8th windiest
Solar energy
5.05 kWh/m²
Travel score
6.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical January day in Chom Bueng reaches about 30°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, January runs about 1°C warmer than December and about 2°C cooler than February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
63020
73020
83020
93020
103020
113020
123020
133020
143020
153020
163020
173020
183020
193020
203020
213020
223020
233020
243020
253020
263120
273120
283120
293120
303120
313120

How January really feels in Chom Bueng

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.

Chom Bueng weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°152.911.36.0
Feb32° / 21°153.211.54.8
Mar34° / 23°478.711.93.4
Apr34° / 24°8814.912.32.4
May33° / 25°14722.912.62.3
Jun32° / 25°13121.512.82.8
Jul31° / 24°17123.412.73.0
Aug31° / 24°17924.212.53.0
Sep31° / 24°21625.612.12.8
Oct30° / 23°19522.611.73.5
Nov30° / 22°477.611.45.4
Dec29° / 20°122.511.26.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 19% of January, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26733
36733
46832
56832
66931
76931
86832
96931
106931
116931
126931
137030
147030
157030
167129
177129
187228
197228
207327
217327
227426
237426
247525
257525
267525
277624
287723
297723
307723
317921

Chance of precipitation in January

Any precipitation

Chom Bueng gets around 15 mm of rain over 2.9 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 9% and peaks near 10% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
28
38
48
58
69
79
89
99
109
1110
1210
1310
1410
1510
1610
179
189
199
2010
2110
2210
2310
2410
2510
2610
2710
2810
2910
3010
3110

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 57% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1717283612
2716283712
3615293713
4615293713
5514293814
6514303814
7513293815
8413293815
9413293816
10412293817
11412293817
12412293818
13411293719
14411293719
15411293720
16410293720
17410283721
18410283821
1949283821
2049283822
2149273822
2249273823
2348263823
2458263824
2558253824
2658253824
2758243825
2858233825
2969223825
3069223825
31610213825

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 12 min at the start of January to 11 h 24 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 6:49 AM to 6:53 AM, and sunset from 6:01 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:496:01
211.26:496:02
311.26:496:02
411.26:506:03
511.26:506:03
611.26:506:04
711.26:516:04
811.26:516:05
911.26:516:05
1011.26:516:06
1111.26:526:07
1211.36:526:07
1311.36:526:08
1411.36:526:08
1511.36:526:09
1611.36:536:09
1711.36:536:10
1811.36:536:10
1911.36:536:11
2011.36:536:11
2111.36:536:12
2211.36:536:12
2311.36:536:13
2411.36:536:13
2511.36:536:14
2611.46:536:14
2711.46:536:15
2811.46:536:15
2911.46:536:16
3011.46:536:16
3111.46:536:17

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.05 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 6.06 kWh/m² in April across the year — January's 5.05 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in January

Hazard calendar for Chom Bueng

In seasonPeak

None of Chom Bueng's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Chom Bueng's monsoon runs May–October, when most of the year's rain falls.

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

Is January a good time to visit Chom Bueng?

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

6.0
Sightseeing
2nd-best month of the year
8.2
Beach & pool
2nd-best month of the year

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

What to pack for Chom Bueng in January

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

In January, Chom Bueng sees daytime highs around 30°C and nights near 20°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Chom Bueng 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 64 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
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Chom Bueng in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chom Bueng peaks around August 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 13Jan 1UV 9
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar13Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Chom Bueng 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 Chom Bueng is worst in February — around 61 µg/m³ PM2.5 (unhealthy), about 2.6× the cleanest month (August, 24 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorFeb 1861 µg/m³Aug 1024 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb61Unhealthy
Mar60Unhealthy
Apr47Poor
May33Moderate
Jun24Moderate
Jul24Moderate
Aug24Moderate
Sep29Moderate
Oct46Poor
Nov48Poor
Dec48Poor
Location & terrain

Where is Chom Bueng?

Chom Bueng sits at 13.6°N, 99.6°E, 89 m above sea level, in Thailand. The nearest listed city is Ratchaburi, 26 km away.

Topography around Chom Bueng

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

Within 3 km, the terrain around Chom Bueng has only modest variations in elevation — a maximum elevation change of 90 m around an average of 88 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 420 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,306 m.

The land around Chom Bueng is covered by cropland (41%) and trees (36%) within 3 km, cropland (43%) and trees (37%) within 16 km, and trees (57%) and cropland (25%) within 80 km.

3 km
90 m
16 km
420 m
80 km
1,306 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Ratchaburi 26 km · Photharam 29 km · Ban I Chang 34 km · Tha Maka 36 km · Bang Phae 37 km · Ban Pong 38 km · Tha Muang 38 km · Damnoen Saduak 41 km

Thailand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$8,057
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
4.8
per 100k, 2011
Road deaths
32.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 402
Religion
Buddhist 93%Muslim 5%Christian 1%other 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 Chom Bueng (13.62°, 99.5917°, elevation 89 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. 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).