Tha Bo weather in January

In January, Tha Bo sees average daytime highs of 29°C and overnight lows near 17°C, with 10 mm of rain across 1.6 wet days and about 11 hours of daylight. It is the 11th-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 66% of the time in January, and the air most often feels humid.

Daylight stretches from about 10 h 54 min at the start of January to 11 h 12 min by month's end. Set against the rest of the year, January is Tha Bo's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Tha Bo's year-round climate.

Daytime high
29°
11th warmest
Overnight low
17°
1st coldest
Rainfall
10 mm
1.6 wet days
Daylight
11 hours
6:48 AM – 5:50 PM
Cloud cover
32%
2nd clearest
Wind
7 km/h
3rd windiest
Solar energy
4.75 kWh/m²
Travel score
6.9
out of 10

Tha Bo is town in Nong Khai 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 29°C through the month.

A typical January day in Tha Bo reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 33°C. Set against its neighbours, January runs on par with December and about 2°C cooler than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12917
22917
32917
42917
52917
62917
72917
82917
92917
102917
112917
122917
132917
142917
152917
162917
172917
182917
192917
202917
212917
222917
232917
242917
252917
262917
273017
283018
293018
303018
313018

How January really feels in Tha Bo

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.

Tha Bo weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 17°101.6116.9
Feb32° / 19°142.311.45.4
Mar34° / 22°356.111.93.5
Apr35° / 25°7211.712.42.4
May34° / 26°23622.712.82.1
Jun33° / 26°25224.1132.2
Jul32° / 26°29525.3132.4
Aug32° / 25°34426.812.62.4
Sep32° / 25°27424.312.12.6
Oct31° / 24°9811.711.64.2
Nov30° / 21°212.811.25.9
Dec29° / 18°81.2117.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 20%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18020
27921
37822
47723
57723
67723
77624
87624
97624
107624
117723
127822
137822
147822
157921
167921
178020
188119
198119
208218
218218
228218
238317
248317
258317
268317
278317
288416
298416
308416
318416

Chance of precipitation in January

Any precipitation

Tha Bo gets around 10 mm of rain over 1.6 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 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
15
25
35
45
55
65
75
85
95
105
115
125
136
146
156
166
176
186
196
205
215
225
235
245
256
266
276
286
296
306
316

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162733222
2152733222
3152833222
4142834222
5142834222
6132834222
7132834233
8132833233
9132833233
10132833233
11132833233
12132933233
13132933223
14132933223
15132834223
16132834223
17132834223
18132835223
19132735223
20132735223
21132735223
22132736222
23132736223
24132636233
25132635233
26132535233
27142535233
28142534243
29142434244
30142434244
31152434244

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 10 h 54 min 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 18 minutes over January. Sunrise moves from 6:44 AM to 6:47 AM, and sunset from 5:41 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:445:41
211.06:455:42
311.06:455:42
411.06:455:43
511.06:465:44
611.06:465:44
711.06:465:45
811.06:465:45
911.06:475:46
1011.06:475:46
1111.06:475:47
1211.06:475:48
1311.06:475:48
1411.06:485:49
1511.06:485:50
1611.06:485:50
1711.06:485:51
1811.16:485:51
1911.16:485:52
2011.16:485:53
2111.16:485:53
2211.16:485:54
2311.16:485:54
2411.16:485:55
2511.16:485:55
2611.16:485:56
2711.16:485:57
2811.26:485:57
2911.26:485:58
3011.26:475:58
3111.26:475:59

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.75 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 6.08 kWh/m² in April across the year — January's 4.75 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in January

Hazard calendar for Tha Bo

In seasonPeak

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

Tha Bo sits in the Pacific typhoon belt; the season peaks July–October.

Tha Bo's monsoon runs May–September, 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 Tha Bo?

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

6.9
Sightseeing
2nd-best month of the year
8.8
Beach & pool
2nd-best month of the year

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

What to pack for Tha Bo in January

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

In January, Tha Bo sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Tha Bo 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 Tha Bo peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 11UV 13Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr10Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7Very high

Air quality in Tha Bo 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 Tha Bo is worst in March — around 77 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (July, 23 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyModerateMar 2376 µg/m³Jul 2123 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb44Poor
Mar77Unhealthy
Apr73Unhealthy
May32Moderate
Jun24Moderate
Jul23Moderate
Aug23Moderate
Sep24Moderate
Oct26Moderate
Nov25Moderate
Dec26Moderate
Location & terrain

Where is Tha Bo?

Tha Bo sits at 17.9°N, 102.6°E, 182 m above sea level, in Thailand. The nearest listed city is Vientiane, 13 km away.

Topography around Tha Bo

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

Within 3 km, the terrain around Tha Bo has only modest variations in elevation — a maximum elevation change of 32 m around an average of 169 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 64 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,486 m.

The land around Tha Bo is covered by cropland (43%) and trees (28%) within 3 km, cropland (47%) and trees (32%) within 16 km, and trees (54%) and cropland (39%) within 80 km.

3 km
32 m
16 km
64 m
80 km
1,486 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Vientiane 13 km · Nong Khai 17 km · Nam Som 42 km · Kut Chap 47 km · Udon Thani 53 km · Phon Charoen 65 km · Na Klang 73 km · Nong Bua Lamphu 73 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 Tha Bo (17.85°, 102.5814°, elevation 182 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). 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).