Chai Nat weather in January

In January, Chai Nat sees average daytime highs of 33°C and overnight lows near 21°C, with 10 mm of rain across 2.2 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 61% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 06 min at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Chai Nat's 2nd-clearest and 10th-windiest month. For the whole year in context, see Chai Nat's year-round climate.

Daytime high
33°
9th warmest
Overnight low
21°
1st coldest
Rainfall
10 mm
2.2 wet days
Daylight
11 h 12 min
6:53 AM – 6:04 PM
Cloud cover
37%
2nd clearest
Wind
7 km/h
10th windiest
Solar energy
4.98 kWh/m²
Travel score
4.6
out of 10

Chai Nat is town in Chai Nat province, Thailand.

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 33°C through the month.

A typical January day in Chai Nat reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°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°40°151015202531
Avg high (°C)Avg low (°C)
13220
23220
33220
43220
53220
63220
73220
83221
93221
103221
113221
123221
133221
143321
153321
163321
173321
183321
193321
203321
213321
223321
233321
243321
253321
263321
273321
283321
293321
303322
313322

How January really feels in Chai Nat

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.

Chai Nat weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 21°102.211.24.6
Feb35° / 23°122.111.53.2
Mar37° / 25°396.611.91.8
Apr38° / 27°7812.812.31.1
May36° / 27°15121.712.71.3
Jun36° / 27°12422.112.91.5
Jul35° / 27°13722.912.81.7
Aug34° / 26°17924.112.51.9
Sep33° / 26°26025.512.12.0
Oct32° / 25°17918.811.73.0
Nov32° / 23°325.211.34.4
Dec32° / 21°91.711.15.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27327
37327
47327
57327
67327
77228
87228
97228
107228
117228
127228
137228
147327
157327
167426
177525
187525
197624
207822
217822
227921
237921
248119
258119
268119
278218
288218
298317
308317
318416

Chance of precipitation in January

Any precipitation

Chai Nat gets around 10 mm of rain over 2.2 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 7% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
26
36
46
56
66
76
86
96
106
116
126
137
147
157
167
177
187
197
207
217
228
238
248
258
268
278
288
298
308
318

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 52% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
16163134130
26153134130
35153134140
45153234141
55143234151
64143234151
74143233161
84133333161
94133333171
104133333171
114133332181
123133332181
134133332181
144133332181
154123332191
164123332191
174123332191
184113331201
194113331201
204113231201
214113231211
224113231211
235113130211
245113130221
255113030231
265112930231
276122829241
286122829241
296122729251
306132629251
316132529251

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 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
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 06 min at the start of January to 11 h 18 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 5:56 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:495:56
211.16:505:57
311.16:505:57
411.16:505:58
511.16:515:58
611.16:515:59
711.16:515:59
811.16:516:00
911.16:526:01
1011.26:526:01
1111.26:526:02
1211.26:526:02
1311.26:536:03
1411.26:536:03
1511.26:536:04
1611.26:536:04
1711.26:536:05
1811.26:536:06
1911.26:536:06
2011.26:546:07
2111.26:546:07
2211.26:546:08
2311.26:546:08
2411.36:546:09
2511.36:546:09
2611.36:546:10
2711.36:546:10
2811.36:546:11
2911.36:536:11
3011.36:536:12
3111.36:536:12

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.98 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.29 kWh/m² in April across the year — January's 4.98 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
84.8Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.3Bright
315.3Bright
Planning a trip in January

Hazard calendar for Chai Nat

In seasonPeak

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

Chai Nat'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 Chai Nat?

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

4.6
Sightseeing
2nd-best month of the year
7.8
Beach & pool
2nd-best month of the year

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

What to pack for Chai Nat in January

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

In January, Chai Nat sees daytime highs around 33°C and nights near 21°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Chai Nat 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 Chai Nat peaks around August 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 15UV 14Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Chai Nat 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 Chai Nat is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (June, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1455 µg/m³Jun 2217 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb48Poor
Mar56Unhealthy
Apr40Poor
May26Moderate
Jun17Moderate
Jul18Moderate
Aug19Moderate
Sep22Moderate
Oct28Moderate
Nov28Moderate
Dec30Moderate
Location & terrain

Where is Chai Nat?

Chai Nat sits at 15.2°N, 100.1°E, 26 m above sea level, in Thailand. The nearest listed city is Uthai Thani, 24 km away.

Topography around Chai Nat

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

Within 3 km, the terrain around Chai Nat has only modest variations in elevation — a maximum elevation change of 107 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 233 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,204 m.

The land around Chai Nat is covered by cropland (36%) and trees (35%) within 3 km, cropland (74%) within 16 km, and cropland (79%) within 80 km.

3 km
107 m
16 km
233 m
80 km
1,204 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Uthai Thani 24 km · Bang Racham 39 km · Thap Than 39 km · Sing Buri 45 km · Nakhon Sawan 58 km · Wiset Chaichan 70 km · Lop Buri 71 km · Lat Yao 72 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 Chai Nat (15.1864°, 100.1235°, elevation 26 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. 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).