Loei weather in January

In January, Loei sees average daytime highs of 28°C and overnight lows near 16°C, with 12 mm of rain across 1.9 wet days and about 11.1 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 60% of the time in January, and the air most often feels humid.

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

Daytime high
28°
11th warmest
Overnight low
16°
1st coldest
Rainfall
12 mm
1.9 wet days
Daylight
11 h 06 min
6:51 AM – 5:54 PM
Cloud cover
36%
2nd clearest
Wind
6 km/h
3rd windiest
Solar energy
4.7 kWh/m²
Travel score
7.4
out of 10

Loei is town in Loei province, Thailand.

Air quality
Elevated
PM2.5 25 µg/m³ · 2019

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 28°C through the month.

A typical January day in Loei reaches about 28°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 32°C. Set against its neighbours, January runs about 1°C warmer than December and about 3°C cooler than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12716
22716
32816
42816
52816
62816
72816
82816
92816
102816
112816
122816
132816
142816
152816
162816
172816
182816
192816
202816
212916
222916
232916
242916
252916
262916
272916
282916
292916
302916
312917

How January really feels in Loei

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.

Loei 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
Jan28° / 16°121.911.17.4
Feb31° / 18°152.811.45.7
Mar33° / 21°477.811.93.8
Apr34° / 23°8814.812.42.8
May33° / 24°19823.612.82.4
Jun32° / 25°16820.8132.7
Jul31° / 25°18822.212.92.9
Aug31° / 24°24924.812.62.8
Sep31° / 24°24124.112.13.0
Oct30° / 22°11313.711.64.6
Nov29° / 19°243.411.26.6
Dec27° / 17°101.6118.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 22%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27525
37525
47426
57426
67426
77426
87426
97525
107426
117426
127525
137525
147624
157723
167723
177822
187921
197921
208020
218020
228020
238119
248119
258119
268119
278119
288119
298119
308218
318218

Chance of precipitation in January

Any precipitation

Loei gets around 12 mm of rain over 1.9 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 7% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
27
37
47
57
67
77
87
97
107
117
127
137
147
156
166
176
186
196
206
216
226
236
246
256
267
277
287
298
308
318

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1183036151
2173136151
3163137151
4163237151
5153238141
6153238141
7153238141
8143239141
9143239131
10143239131
11143239131
12143239132
13143239132
14143239132
15143239132
16143239132
17143239132
18143239142
19133239142
20133239142
21133239152
22133238152
23133238162
24133138162
25133138172
26133137172
27133037172
28143037182
29143036182
30152936182
31152936182

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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 hours 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 12 minutes over January. Sunrise moves from 6:47 AM to 6:50 AM, and sunset from 5:45 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:475:45
211.06:475:46
311.06:485:46
411.06:485:47
511.06:485:48
611.06:495:48
711.06:495:49
811.06:495:49
911.06:495:50
1011.06:505:51
1111.06:505:51
1211.06:505:52
1311.06:505:52
1411.06:505:53
1511.16:505:54
1611.16:515:54
1711.16:515:55
1811.16:515:55
1911.16:515:56
2011.16:515:57
2111.16:515:57
2211.16:515:58
2311.16:515:58
2411.16:515:59
2511.16:515:59
2611.26:516:00
2711.26:516:01
2811.26:516:01
2911.26:506:02
3011.26:506:02
3111.26:506:03

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.7 kWh/m².

For context, solar energy here swings from a low near 4.13 kWh/m² to a high of 5.97 kWh/m² in April across the year — January's 4.7 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
305.0Bright
315.0Bright
Planning a trip in January

Hazard calendar for Loei

In seasonPeak

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

Loei'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 Loei?

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

7.4
Sightseeing
2nd-best month of the year
8.5
Beach & pool
1st-best month of the year

January is one of the better times to visit Loei for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Loei in January

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

In January, Loei sees daytime highs around 28°C and nights near 16°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Loei 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 Loei peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 12UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Loei 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 Loei is worst in March — around 50 µg/m³ PM2.5 (poor), about 3.1× the cleanest month (July, 16 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Loei's WHO annual average of 25 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1849 µg/m³Jul 1316 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb36Poor
Mar50Poor
Apr40Poor
May23Moderate
Jun16Moderate
Jul16Moderate
Aug17Moderate
Sep18Moderate
Oct20Moderate
Nov19Moderate
Dec20Moderate
Location & terrain

Where is Loei?

Loei sits at 17.5°N, 101.7°E, 244 m above sea level, in Thailand. The nearest listed city is Wang Saphung, 22 km away.

Lom Sak

Topography around Loei

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

Within 3 km, the terrain around Loei has significant variations in elevation — a maximum elevation change of 274 m around an average of 256 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 518 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,810 m.

The land around Loei is covered by trees (59%) and artificial surfaces (25%) within 3 km, trees (76%) within 16 km, and trees (65%) and cropland (24%) within 80 km.

3 km
274 m
16 km
518 m
80 km
1,810 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Wang Saphung 22 km · Erawan 32 km · Na Klang 53 km · Nam Som 58 km · Phu Kradueng 69 km · Nong Bua Lamphu 82 km · Kut Chap 89 km · Lom Sak 94 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 Loei (17.4905°, 101.7275°, elevation 244 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).