Ilām weather in December

In December, Ilām sees average daytime highs of 17°C and overnight lows near 6°C, with 15 mm of rain across 3.4 wet days and about 10.3 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 16°C by the end. The sky is clear or mostly clear about 56% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of December to 10 h 18 min by month's end. Set against the rest of the year, December is Ilām's 1st-clearest and 7th-windiest month. For the whole year in context, see Ilām's year-round climate.

Daytime high: 17°; 11th warmest
Overnight low: 6°; 2nd coldest
Rainfall: 15 mm; 3.4 wet days
Daylight: 10 h 18 min; 6:40 AM – 4:59 PM
Cloud cover: 38%; 1st clearest
Wind: 3 km/h; 7th windiest
Solar energy: 3.33 kWh/m²
Travel score: 6.5; out of 10

← November Ilām year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 18°C in the first days to 16°C by the end.

A typical December day in Ilām reaches about 17°C in the afternoon and slips back to 6°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 19°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	18	18	18	18	18	18	18	18	17	17	17	17	17	17	17	17	17	17	16	16	16	16	16	16	16	16	16	16	16	16	16
Avg low (°C)	8	8	8	7	7	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5

	Avg high (°C)	Avg low (°C)
1	18	8
2	18	8
3	18	8
4	18	7
5	18	7
6	18	7
7	18	7
8	18	7
9	17	7
10	17	7
11	17	7
12	17	7
13	17	7
14	17	7
15	17	6
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	6
23	16	6
24	16	6
25	16	5
26	16	5
27	16	5
28	16	5
29	16	5
30	16	5
31	16	5

Ilām weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 27%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	74	75	74	74	74	73	73	73	73	73	71	71	71	71	71	71	72	72	72	73	73	74	74	74	75	75	75	76	77	77	77
Cloudier (%)	26	25	26	26	26	27	27	27	27	27	29	29	29	29	29	29	28	28	28	27	27	26	26	26	25	25	25	24	23	23	23

	Clearer (%)	Cloudier (%)
1	74	26
2	75	25
3	74	26
4	74	26
5	74	26
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	71	29
12	71	29
13	71	29
14	71	29
15	71	29
16	71	29
17	72	28
18	72	28
19	72	28
20	73	27
21	73	27
22	74	26
23	74	26
24	74	26
25	75	25
26	75	25
27	75	25
28	76	24
29	77	23
30	77	23
31	77	23

Chance of precipitation in December

Any precipitation

Ilām gets around 15 mm of rain over 3.4 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 12% and peaks near 17% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	11	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	12	12	12	13	13	14	14	15	16	16	17

	Rain chance (%)
1	11
2	10
3	10
4	10
5	10
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	11
16	11
17	11
18	11
19	11
20	11
21	12
22	12
23	12
24	13
25	13
26	14
27	14
28	15
29	16
30	16
31	17

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

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

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

Wind in December

Winds average 3 km/h in December.

Across December, daily wind ranges from about 3 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	3	calm
2	3	calm
3	3	calm
4	3	calm
5	3	calm
6	3	calm
7	3	calm
8	3	calm
9	3	calm
10	3	calm
11	3	calm
12	3	calm
13	3	calm
14	3	calm
15	3	calm
16	3	calm
17	3	calm
18	3	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 24 min at the start of December to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:30 AM to 6:47 AM, and sunset from 4:56 PM to 5:06 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.4	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3	10.3
Sunrise (AM)	6:30	6:31	6:32	6:32	6:33	6:34	6:34	6:35	6:36	6:36	6:37	6:38	6:38	6:39	6:39	6:40	6:41	6:41	6:42	6:42	6:43	6:43	6:44	6:44	6:44	6:45	6:45	6:46	6:46	6:46	6:47
Sunset (PM)	4:56	4:56	4:56	4:56	4:56	4:56	4:57	4:57	4:57	4:57	4:57	4:58	4:58	4:58	4:59	4:59	4:59	5:00	5:00	5:01	5:01	5:01	5:02	5:02	5:03	5:03	5:04	5:05	5:05	5:06	5:06

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.4	6:30	4:56
2	10.4	6:31	4:56
3	10.4	6:32	4:56
4	10.4	6:32	4:56
5	10.4	6:33	4:56
6	10.4	6:34	4:56
7	10.4	6:34	4:57
8	10.4	6:35	4:57
9	10.4	6:36	4:57
10	10.3	6:36	4:57
11	10.3	6:37	4:57
12	10.3	6:38	4:58
13	10.3	6:38	4:58
14	10.3	6:39	4:58
15	10.3	6:39	4:59
16	10.3	6:40	4:59
17	10.3	6:41	4:59
18	10.3	6:41	5:00
19	10.3	6:42	5:00
20	10.3	6:42	5:01
21	10.3	6:43	5:01
22	10.3	6:43	5:01
23	10.3	6:44	5:02
24	10.3	6:44	5:02
25	10.3	6:44	5:03
26	10.3	6:45	5:03
27	10.3	6:45	5:04
28	10.3	6:46	5:05
29	10.3	6:46	5:05
30	10.3	6:46	5:06
31	10.3	6:47	5:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.33 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 — December's 3.33 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.4	3.4	3.4	3.4	3.4	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.4	Moderate
2	3.4	Moderate
3	3.4	Moderate
4	3.4	Moderate
5	3.4	Moderate
6	3.3	Moderate
7	3.3	Moderate
8	3.3	Moderate
9	3.3	Moderate
10	3.3	Moderate
11	3.3	Moderate
12	3.3	Moderate
13	3.3	Moderate
14	3.3	Moderate
15	3.3	Moderate
16	3.3	Moderate
17	3.3	Moderate
18	3.3	Moderate
19	3.3	Moderate
20	3.3	Moderate
21	3.3	Moderate
22	3.3	Moderate
23	3.4	Moderate
24	3.4	Moderate
25	3.4	Moderate
26	3.4	Moderate
27	3.4	Moderate
28	3.4	Moderate
29	3.4	Moderate
30	3.4	Moderate
31	3.4	Moderate

Planning a trip in December

Hazard calendar for Ilām

In seasonPeak

None of Ilām's seasonal hazards are active in December. 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 December a good time to visit Ilām?

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

6.5

Sightseeing

2nd-best month of the year

1.4

Beach & pool

11th-best month of the year

December is a reasonable time to visit Ilām for sightseeing.

What to pack for Ilām in December

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

In December, Ilām sees daytime highs around 17°C and nights near 6°C. Worth packing: a warm layer. About 3 days see rain.

a warm layer

UV index in Ilām in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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.

	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 December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December 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

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.

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

trees 88%

16 km

2,582 m

trees 92%

80 km

7,186 m

trees 66%

treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen

← November Ilām year-round climate January →Best places to visit in December

December 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

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).

	Avg high (°C)	Avg low (°C)
1	18	8
2	18	8
3	18	8
4	18	7
5	18	7
6	18	7
7	18	7
8	18	7
9	17	7
10	17	7
11	17	7
12	17	7
13	17	7
14	17	7
15	17	6
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	6
23	16	6
24	16	6
25	16	5
26	16	5
27	16	5
28	16	5
29	16	5
30	16	5
31	16	5

	Clearer (%)	Cloudier (%)
1	74	26
2	75	25
3	74	26
4	74	26
5	74	26
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	71	29
12	71	29
13	71	29
14	71	29
15	71	29
16	71	29
17	72	28
18	72	28
19	72	28
20	73	27
21	73	27
22	74	26
23	74	26
24	74	26
25	75	25
26	75	25
27	75	25
28	76	24
29	77	23
30	77	23
31	77	23

	Rain chance (%)
1	11
2	10
3	10
4	10
5	10
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	11
16	11
17	11
18	11
19	11
20	11
21	12
22	12
23	12
24	13
25	13
26	14
27	14
28	15
29	16
30	16
31	17

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

	Avg high (°C)	Avg low (°C)
1	18	8
2	18	8
3	18	8
4	18	7
5	18	7
6	18	7
7	18	7
8	18	7
9	17	7
10	17	7
11	17	7
12	17	7
13	17	7
14	17	7
15	17	6
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	6
23	16	6
24	16	6
25	16	5
26	16	5
27	16	5
28	16	5
29	16	5
30	16	5
31	16	5

	Clearer (%)	Cloudier (%)
1	74	26
2	75	25
3	74	26
4	74	26
5	74	26
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	71	29
12	71	29
13	71	29
14	71	29
15	71	29
16	71	29
17	72	28
18	72	28
19	72	28
20	73	27
21	73	27
22	74	26
23	74	26
24	74	26
25	75	25
26	75	25
27	75	25
28	76	24
29	77	23
30	77	23
31	77	23

	Rain chance (%)
1	11
2	10
3	10
4	10
5	10
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	11
16	11
17	11
18	11
19	11
20	11
21	12
22	12
23	12
24	13
25	13
26	14
27	14
28	15
29	16
30	16
31	17

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

	Avg high (°C)	Avg low (°C)
1	18	8
2	18	8
3	18	8
4	18	7
5	18	7
6	18	7
7	18	7
8	18	7
9	17	7
10	17	7
11	17	7
12	17	7
13	17	7
14	17	7
15	17	6
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	6
23	16	6
24	16	6
25	16	5
26	16	5
27	16	5
28	16	5
29	16	5
30	16	5
31	16	5

	Clearer (%)	Cloudier (%)
1	74	26
2	75	25
3	74	26
4	74	26
5	74	26
6	73	27
7	73	27
8	73	27
9	73	27
10	73	27
11	71	29
12	71	29
13	71	29
14	71	29
15	71	29
16	71	29
17	72	28
18	72	28
19	72	28
20	73	27
21	73	27
22	74	26
23	74	26
24	74	26
25	75	25
26	75	25
27	75	25
28	76	24
29	77	23
30	77	23
31	77	23

	Rain chance (%)
1	11
2	10
3	10
4	10
5	10
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	11
16	11
17	11
18	11
19	11
20	11
21	12
22	12
23	12
24	13
25	13
26	14
27	14
28	15
29	16
30	16
31	17

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0