Ilām in Winter
In winter (December, January and February), Ilām sees average daytime highs around 16°C and overnight lows near 6°C, with 100 mm of rain over about 21 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 16°C. The sky is clear or mostly clear about 46% of the time across winter, and the air most often feels dry.
Winter is Ilām's best season of the year to visit on our travel score. For the whole year in context, see Ilām's year-round climate.
- Avg daytime high
- 16°C
- coldest season of the year
- Avg overnight low
- 6°C
- Rainfall
- 100 mm
- 21 wet days
- Avg wind
- 4 km/h
- Travel score
- 5.7
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Ilām in Winter
Across winter, daytime highs hold fairly steady around 16°C.
A typical winter day in Ilām reaches about 16°C and drops to 6°C overnight. The warmest of the three months is February, the coolest January.
Ilām weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 15° / 5° | 29 | 6.5 | 10.5 | 5.2 |
| Feb | 17° / 7° | 56 | 11.2 | 11 | 5.4 |
| Mar | 21° / 10° | 100 | 17 | 11.8 | 5.6 |
| Apr | 24° / 13° | 163 | 21.8 | 12.6 | 5.1 |
| May | 25° / 16° | 288 | 28.5 | 13.3 | 4.1 |
| Jun | 25° / 19° | 526 | 29.5 | 13.7 | 3.6 |
| Jul | 24° / 20° | 825 | 30.9 | 13.5 | 3.4 |
| Aug | 25° / 19° | 566 | 30.6 | 13 | 3.5 |
| Sep | 24° / 18° | 396 | 28.3 | 12.2 | 3.9 |
| Oct | 23° / 14° | 135 | 18 | 11.4 | 5.8 |
| Nov | 20° / 10° | 27 | 7.1 | 10.7 | 7.0 |
| Dec | 17° / 6° | 15 | 3.4 | 10.3 | 6.5 |
Cloud cover in Winter
The sky is clear or mostly clear about 46% of the time across winter.
Chance of precipitation in Winter
Ilām gets around 100 mm of rain over 21 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 4 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 24 min in early December to 11 h 24 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.6 kWh/m².
Hazard calendar for Ilām
None of Ilām's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Ilām's monsoon runs June–September, when most of the year's rain falls.
Is winter a good time to visit Ilām?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Ilām for sightseeing.
What to pack for Ilām in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Ilām sees daytime highs around 16°C and nights near 6°C. Worth packing: a warm layer and rain gear. About 21 days see rain.
UV index in Ilām in Winter
Clear-sky midday UV across winter averages 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 9 | 8 | 9 | 9 | 13 | 10 | 11 | 6 | 4 | 4 |
| Level | Moderate | Moderate | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 13 | Extreme |
| Aug | 10 | Extreme |
| Sep | 11 | Extreme |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 4 | Moderate |
Air quality in Ilām in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 111 | 107 | 92 | 74 | 52 | 37 | 24 | 31 | 40 | 59 | 81 | 104 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Moderate | Moderate | Poor | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 111 | Unhealthy |
| Feb | 107 | Unhealthy |
| Mar | 92 | Unhealthy |
| Apr | 74 | Unhealthy |
| May | 52 | Poor |
| Jun | 37 | Poor |
| Jul | 24 | Moderate |
| Aug | 31 | Moderate |
| Sep | 40 | Poor |
| Oct | 59 | Unhealthy |
| Nov | 81 | Unhealthy |
| Dec | 104 | Unhealthy |
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.
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.
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
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.