Ilām weather in January

In January, Ilām sees average daytime highs of 15°C and overnight lows near 5°C, with 29 mm of rain across 6.5 wet days and about 10.5 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 15°C through the month. The sky is clear or mostly clear about 46% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of January to 10 h 42 min by month's end. Set against the rest of the year, January is Ilām's 3rd-clearest and 4th-windiest month. For the whole year in context, see Ilām's year-round climate.

Daytime high
15°
12th warmest
Overnight low
1st coldest
Rainfall
29 mm
6.5 wet days
Daylight
10 h 30 min
6:48 AM – 5:17 PM
Cloud cover
45%
3rd clearest
Wind
4 km/h
4th windiest
Solar energy
3.43 kWh/m²
Travel score
5.2
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 15°C through the month.

A typical January day in Ilām reaches about 15°C in the afternoon and slips back to 5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 18°C. Set against its neighbours, January runs about 2°C cooler than December and about 2°C cooler than February.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1165
2155
3155
4155
5155
6155
7155
8155
9155
10155
11155
12155
13155
14155
15155
16155
17155
18155
19155
20155
21155
22155
23155
24155
25155
26155
27155
28155
29166
30166
31166

Ilām weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan15° / 296.510.55.2
Feb17° / 5611.2115.4
Mar21° / 10°1001711.85.6
Apr24° / 13°16321.812.65.1
May25° / 16°28828.513.34.1
Jun25° / 19°52629.513.73.6
Jul24° / 20°82530.913.53.4
Aug25° / 19°56630.6133.5
Sep24° / 18°39628.312.23.9
Oct23° / 14°1351811.45.8
Nov20° / 10°277.110.77.0
Dec17° / 153.410.36.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 22% of January, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27723
37723
47723
57723
67624
77525
87426
97426
107327
117228
127129
137030
146931
156733
166733
176535
186436
196436
206238
216238
226238
236139
246040
255941
265941
275941
285941
295842
305842
315941

Chance of precipitation in January

Any precipitation

Ilām gets around 29 mm of rain over 6.5 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 20% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
117
217
318
418
518
618
718
818
918
1018
1118
1218
1318
1418
1518
1618
1719
1819
1919
2020
2120
2221
2322
2422
2523
2624
2725
2826
2926
3027
3128

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 4 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 18 min at the start of January to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over January. Sunrise moves from 6:46 AM to 6:45 AM, and sunset from 5:06 PM to 5:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.36:465:06
210.36:475:07
310.36:475:08
410.46:475:08
510.46:475:09
610.46:485:10
710.46:485:10
810.46:485:11
910.46:485:12
1010.46:485:13
1110.46:485:13
1210.46:485:14
1310.46:485:15
1410.56:485:15
1510.56:485:16
1610.56:485:17
1710.56:485:18
1810.56:485:18
1910.56:485:19
2010.56:485:20
2110.66:485:21
2210.66:485:21
2310.66:475:22
2410.66:475:23
2510.66:475:24
2610.66:475:25
2710.76:465:25
2810.76:465:26
2910.76:465:27
3010.76:455:28
3110.76:455:28

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.43 kWh/m².

For context, solar energy here swings from a low near 3.29 kWh/m² to a high of 5.7 kWh/m² in April across the year — January's 3.43 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.4Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.6Moderate
303.6Moderate
313.6Moderate
Planning a trip in January

Hazard calendar for Ilām

In seasonPeak

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

Ilām's monsoon runs June–September, 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 Ilām?

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

5.2
Sightseeing
6th-best month of the year
0.2
Beach & pool
12th-best month of the year

January is a reasonable time to visit Ilām for sightseeing.

What to pack for Ilām in January

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

In January, Ilām sees daytime highs around 15°C and nights near 5°C. Worth packing: a warm layer. About 7 days see rain.

a warm layer

UV index in Ilām in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ilām peaks around July 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highExtremeModerateJul 18UV 12Jan 1UV 4
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar9Very high
Apr8Very high
May9Very high
Jun9Very high
Jul13Extreme
Aug10Extreme
Sep11Extreme
Oct6High
Nov4Moderate
Dec4Moderate

Air quality in Ilām 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 Ilām is worst in January — around 111 µg/m³ PM2.5 (unhealthy), about 4.6× the cleanest month (July, 24 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 18111 µg/m³Jul 1925 µg/m³
PM2.5 (µg/m³)Level
Jan111Unhealthy
Feb107Unhealthy
Mar92Unhealthy
Apr74Unhealthy
May52Poor
Jun37Poor
Jul24Moderate
Aug31Moderate
Sep40Poor
Oct59Unhealthy
Nov81Unhealthy
Dec104Unhealthy
Location & terrain

Where is Ilām?

Ilām sits at 26.9°N, 87.9°E, 1,218 m above sea level, in Nepal. The nearest listed city is Darjeeling, 36 km away.

DhankutāDharānĪṭahari̇̄BiratnagarInaruwaKhā̃dbāri̇̄

Topography around Ilām

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

Within 3 km, the terrain around Ilām has large variations in elevation — a maximum elevation change of 966 m around an average of 897 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,582 m; within 80 km, extreme variations in elevation — a maximum elevation change of 7,186 m.

The land around Ilām is covered by trees (88%) within 3 km, trees (92%) within 16 km, and trees (66%) and cropland (25%) within 80 km.

3 km
966 m
16 km
2,582 m
80 km
7,186 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen
January weather nearby: Darjeeling 36 km · Bhadrapur 44 km · Dhankutā 60 km · Dharān 65 km · Īṭahari̇̄ 70 km · Biratnagar 83 km · Inaruwa 84 km · Khā̃dbāri̇̄ 88 km

Nepal travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / D / M
230 V · 50 Hz
Prices
≈ 24% of US
price level, 2025
GDP per capita
$1,536
2025
Happiness
5.1 / 10
World Happiness, 2025
Safe drinking water
16%
of population, 2024
Homicide rate
2.1
per 100k, 2020
Road deaths
16.3
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 514
Religion
Hindu 81%Buddhist 8%Muslim 5%Kirat 3%

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 Ilām (26.9094°, 87.9282°, elevation 1,218 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).