Biratnagar weather in December

In December, Biratnagar sees average daytime highs of 25°C and overnight lows near 13°C, with 4 mm of rain across 0.5 wet days and about 10.4 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 24°C by the end. The sky is clear or mostly clear about 82% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of December to 10 h 24 min by month's end. Set against the rest of the year, December is Biratnagar's 2nd-clearest and 11th-windiest month. For the whole year in context, see Biratnagar's year-round climate.

Daytime high
25°
11th warmest
Overnight low
13°
2nd coldest
Rainfall
4 mm
0.5 wet days
Daylight
10 h 18 min
6:42 AM – 5:03 PM
Cloud cover
19%
2nd clearest
Wind
5 km/h
11th windiest
Solar energy
3.7 kWh/m²
Travel score
9.1
out of 10

Biratnagar is metropolitan city in Nepal.

Founded
1914

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 27°C in the first days to 24°C by the end.

A typical December day in Biratnagar reaches about 25°C in the afternoon and slips back to 13°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 28°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12715
22715
32714
42714
52714
62714
72614
82614
92614
102614
112613
122613
132613
142613
152513
162513
172513
182512
192512
202512
212512
222512
232512
242412
252412
262412
272412
282412
292411
302411
312411

How December really feels in Biratnagar

Once humidity and wind are folded in, December 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

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Biratnagar weather by month

How December compares with the rest of the year at a glance. December 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
Jan24° / 11°101.410.59.0
Feb27° / 14°121.711.18.3
Mar32° / 19°122.411.84.9
Apr35° / 23°356.212.62.7
May35° / 25°11814.913.32.5
Jun33° / 26°30624.413.62.3
Jul32° / 26°41229.413.52.2
Aug32° / 26°34628.412.92.2
Sep32° / 26°27823.212.22.9
Oct31° / 22°776.211.45.2
Nov29° / 17°40.610.77.5
Dec25° / 13°40.510.49.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1928
2919
3919
4919
59010
69010
79010
88911
98812
108812
118812
128812
138812
148713
158713
168713
178812
188812
198812
208812
218911
228911
238911
248911
258911
268911
278911
288911
299010
308911
318911

Chance of precipitation in December

Any precipitation

Biratnagar gets around 4 mm of rain over 0.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 2% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
152
162
172
182
192
202
212
222
232
243
253
263
274
284
294
304
314

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 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1236314
2256213
3266311
4286210
530619
632608
734597
837576
939556
1042535
1144524
1247494
1350473
1453443
1556422
1659392
1761372
1865341
1967321
2069301
2172271
2274251
2375241
2477221
2578211
2679201
2780191
2881181
2982171
3082171
3183161

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 30 min at the start of December to 10 h 24 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 6:32 AM to 6:48 AM, and sunset from 4:59 PM to 5:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.56:324:59
210.46:335:00
310.46:335:00
410.46:345:00
510.46:355:00
610.46:355:00
710.46:365:00
810.46:375:00
910.46:375:01
1010.46:385:01
1110.46:395:01
1210.46:395:01
1310.46:405:02
1410.46:405:02
1510.46:415:02
1610.36:425:03
1710.36:425:03
1810.36:435:03
1910.36:435:04
2010.36:445:04
2110.36:445:05
2210.36:455:05
2310.36:455:06
2410.36:465:06
2510.36:465:07
2610.36:465:07
2710.36:475:08
2810.36:475:08
2910.46:485:09
3010.46:485:09
3110.46:485:10

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.7 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 6.09 kWh/m² in April across the year — December's 3.7 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.7Moderate
63.7Moderate
73.7Moderate
83.7Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.7Moderate
133.7Moderate
143.7Moderate
153.7Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.7Moderate
243.7Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.7Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in December

Hazard calendar for Biratnagar

In seasonPeak

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

Biratnagar'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 Biratnagar?

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

9.1
Sightseeing
1st-best month of the year
8.3
Beach & pool
3rd-best month of the year

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

What to pack for Biratnagar in December

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

In December, Biratnagar sees daytime highs around 25°C and nights near 13°C. Worth packing: light clothes.

light clothes

UV index in Biratnagar 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 Biratnagar peaks around July 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 20 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highVery highExtremeVery highModerateJul 18UV 11Nov 20UV 4
UV index (midday)Level
Jan4Moderate
Feb4Moderate
Mar8Very high
Apr7High
May8Very high
Jun7Very high
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov3Moderate
Dec4Moderate

Air quality in Biratnagar 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 Biratnagar is worst in January — around 243 µg/m³ PM2.5 (very unhealthy), about 5.3× the cleanest month (July, 46 µg/m³).

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

0306090120150180210240270JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyVery unhealthyJan 12241 µg/m³Jul 1747 µg/m³
PM2.5 (µg/m³)Level
Jan243Very unhealthy
Feb196Very unhealthy
Mar138Unhealthy
Apr97Unhealthy
May75Unhealthy
Jun62Unhealthy
Jul46Poor
Aug58Unhealthy
Sep73Unhealthy
Oct124Unhealthy
Nov191Very unhealthy
Dec231Very unhealthy
Location & terrain

Where is Biratnagar?

Biratnagar sits at 26.5°N, 87.3°E, 74 m above sea level, in Nepal. The nearest listed city is Inaruwa, 21 km away.

RājbirājDhankutāTriyugaBhadrapurIlām

Topography around Biratnagar

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

Within 3 km, the terrain around Biratnagar has only modest variations in elevation — a maximum elevation change of 16 m around an average of 71 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 47 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,727 m.

The land around Biratnagar is covered by cropland (44%) and artificial surfaces (43%) within 3 km, cropland (75%) within 16 km, and cropland (59%) and trees (35%) within 80 km.

3 km
16 m
16 km
47 m
80 km
2,727 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Inaruwa 21 km · Īṭahari̇̄ 23 km · Dharān 40 km · Rājbirāj 53 km · Dhankutā 59 km · Triyuga 68 km · Bhadrapur 83 km · Ilām 83 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 Biratnagar (26.455°, 87.2701°, elevation 74 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).