Nepalgunj weather in September

In September, Nepalgunj sees average daytime highs of 32°C and overnight lows near 25°C, with 154 mm of rain across 17.3 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 44% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Nepalgunj's 10th-clearest and 9th-windiest month. For the whole year in context, see Nepalgunj's year-round climate.

Daytime high
32°
6th warmest
Overnight low
25°
9th coldest
Rainfall
154 mm
17.3 wet days
Daylight
12 h 12 min
6:08 AM – 6:18 PM
Cloud cover
51%
10th clearest
Wind
6 km/h
9th windiest
Solar energy
4.53 kWh/m²
Travel score
3.2
out of 10

Nepalgunj is city in Banke District, Nepal.

Density
1,935/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Nepalgunj reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103326
113326
123326
133226
143226
153226
163225
173225
183225
193225
203225
213225
223225
233225
243225
253225
263224
273224
283224
293224
303224

How September really feels in Nepalgunj

Once humidity and wind are folded in, September averages 30 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
30
27 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Nepalgunj weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 28310.48.1
Feb25° / 12°353.5118.4
Mar31° / 16°222.511.86.0
Apr36° / 21°163.212.72.4
May38° / 25°326.713.41.4
Jun36° / 27°17514.413.71.7
Jul33° / 27°35625.213.62.2
Aug33° / 27°26824.7132.4
Sep32° / 25°15417.312.23.2
Oct31° / 21°29311.35.6
Nov28° / 15°40.510.68.3
Dec23° / 10°130.910.39.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
34060
44159
54357
64456
74654
84753
94852
105050
115347
125446
135743
145842
155941
166238
176337
186535
196832
206931
217228
227327
237525
247723
257921
268020
278218
288317
298416
308614

Chance of precipitation in September

Any precipitation

Nepalgunj gets around 154 mm of rain over 17.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 57% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
171
270
370
469
568
668
767
867
966
1066
1165
1264
1364
1463
1562
1661
1760
1859
1957
2055
2153
2251
2348
2446
2543
2641
2739
2836
2934
3031

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10199
20199
30298
40298
50298
60298
70298
80298
90397
100397
110496
120496
130595
140595
150694
160793
170892
180991
1911188
2011287
2111485
2211683
2321880
2422078
2532374
2632572
2742868
2843264
2953560
3063856

Wind in September

Winds average 6 km/h in September.

Across September, 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.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over September. Sunrise moves from 6:01 AM to 6:15 AM, and sunset from 6:36 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:016:36
212.66:016:35
312.56:026:34
412.56:026:32
512.56:036:31
612.46:036:30
712.46:046:29
812.46:046:28
912.46:056:26
1012.36:056:25
1112.36:066:24
1212.36:066:23
1312.36:066:21
1412.26:076:20
1512.26:076:19
1612.26:086:18
1712.16:086:17
1812.16:096:15
1912.16:096:14
2012.16:106:13
2112.06:106:12
2212.06:116:10
2312.06:116:09
2411.96:126:08
2511.96:126:07
2611.96:136:06
2711.86:136:04
2811.86:146:03
2911.86:146:02
3011.86:156:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.53 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 7.05 kWh/m² in May across the year — September's 4.53 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Nepalgunj

In seasonPeak

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

Nepalgunj's monsoon runs June–August, when most of the year's rain falls.

Nepalgunj sees seasonal dust haze (May–June), heaviest in June.

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

Is September a good time to visit Nepalgunj?

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

3.2
Sightseeing
7th-best month of the year
5.4
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Nepalgunj.

What to pack for Nepalgunj in September

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

In September, Nepalgunj sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Nepalgunj in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nepalgunj peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateAug 16UV 9Dec 22UV 3
UV index (midday)Level
Jan4Moderate
Feb4Moderate
Mar8Very high
Apr8Very high
May9Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Nepalgunj in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Nepalgunj is worst in January — around 184 µg/m³ PM2.5 (very unhealthy), about 3.7× the cleanest month (July, 49 µg/m³).

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyVery unhealthyJan 11182 µg/m³Jul 2150 µg/m³
PM2.5 (µg/m³)Level
Jan184Very unhealthy
Feb140Unhealthy
Mar106Unhealthy
Apr90Unhealthy
May74Unhealthy
Jun73Unhealthy
Jul49Poor
Aug56Unhealthy
Sep65Unhealthy
Oct108Unhealthy
Nov155Very unhealthy
Dec177Very unhealthy
Location & terrain

Where is Nepalgunj?

Nepalgunj sits at 28.1°N, 81.6°E, 150 m above sea level, in Nepal. The nearest listed city is Gulariyā, 32 km away.

BirendranagarTulsi̇̄purṬikāpurDailekhDhangaḍhi̇̄DipayalAmargaḍhi̇̄

Topography around Nepalgunj

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

Within 3 km, the terrain around Nepalgunj has only modest variations in elevation — a maximum elevation change of 14 m around an average of 149 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 84 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,664 m.

The land around Nepalgunj is covered by cropland (61%) and artificial surfaces (22%) within 3 km, cropland (62%) and trees (30%) within 16 km, and cropland (48%) and trees (46%) within 80 km.

3 km
14 m
16 km
84 m
80 km
2,664 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Gulariyā 32 km · Birendranagar 61 km · Tulsi̇̄pur 67 km · Ṭikāpur 72 km · Dailekh 89 km · Dhangaḍhi̇̄ 124 km · Dipayal 150 km · Amargaḍhi̇̄ 172 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 Nepalgunj (28.05°, 81.6167°, elevation 150 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).