Inaruwa weather in September

In September, Inaruwa sees average daytime highs of 32°C and overnight lows near 26°C, with 278 mm of rain across 23.2 wet days and about 12.2 hours of daylight. It is the 7th-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 23% 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 Inaruwa's 9th-clearest and 7th-windiest month. For the whole year in context, see Inaruwa's year-round climate.

Daytime high
32°
7th warmest
Overnight low
26°
9th coldest
Rainfall
278 mm
23.2 wet days
Daylight
12 h 12 min
5:46 AM – 5:55 PM
Cloud cover
68%
9th clearest
Wind
8 km/h
7th windiest
Solar energy
3.88 kWh/m²
Travel score
2.9
out of 10

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 Inaruwa reaches about 32°C in the afternoon and slips back to 26°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13226
23226
33226
43226
53226
63226
73226
83226
93226
103226
113226
123226
133226
143226
153226
163226
173226
183225
193225
203225
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125

How September really feels in Inaruwa

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
21 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.

Inaruwa weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 4th-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 September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11981
22179
32278
42377
52476
62575
72674
82872
92971
103070
113268
123367
133466
143466
153565
163664
173664
183763
194060
204060
214258
224357
234654
244753
254852
265050
275248
285545
295743
305842

Chance of precipitation in September

Any precipitation

Inaruwa gets around 278 mm of rain over 23.2 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 76% and peaks near 88% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
188
288
388
487
587
686
785
884
983
1082
1181
1281
1380
1479
1578
1678
1777
1876
1975
2074
2172
2271
2369
2467
2566
2664
2762
2859
2957
3054

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 89% 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
30199
40298
50298
60298
70298
80298
90397
100397
110397
120496
130496
140595
150694
160793
170892
180991
1901189
2001288
2101486
2211683
2311782
2411980
2512277
2612475
2712673
2812970
2913267
3013564

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:40 AM to 5:52 AM, and sunset from 6:13 PM to 5:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:406:13
212.55:406:12
312.55:406:10
412.55:416:09
512.45:416:08
612.45:426:07
712.45:426:06
812.45:436:05
912.35:436:04
1012.35:436:02
1112.35:446:01
1212.35:446:00
1312.25:455:59
1412.25:455:58
1512.25:465:57
1612.25:465:55
1712.15:475:54
1812.15:475:53
1912.15:475:52
2012.05:485:51
2112.05:485:49
2212.05:495:48
2312.05:495:47
2411.95:505:46
2511.95:505:45
2611.95:515:44
2711.95:515:42
2811.85:515:41
2911.85:525:40
3011.85:525:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.88 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 — September's 3.88 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
244.0Moderate
254.0Moderate
264.0Moderate
274.0Bright
284.0Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Inaruwa

In seasonPeak

In September, Inaruwa sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Inaruwa'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 September a good time to visit Inaruwa?

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

2.9
Sightseeing
7th-best month of the year
4.6
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Inaruwa.

What to pack for Inaruwa in September

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

In September, Inaruwa sees daytime highs around 32°C and nights near 26°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

UV index in Inaruwa in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Inaruwa peaks around July 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highExtremeVery highModerateJul 19UV 12Nov 21UV 4
UV index (midday)Level
Jan4Moderate
Feb4Moderate
Mar9Very high
Apr8Very high
May9Very high
Jun8Very high
Jul12Extreme
Aug10Very high
Sep10Extreme
Oct7High
Nov4Moderate
Dec4Moderate

Air quality in Inaruwa 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 Inaruwa 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 Inaruwa?

Inaruwa sits at 26.6°N, 87.1°E, 87 m above sea level, in Nepal. The nearest listed city is Īṭahari̇̄, 14 km away.

DhankutāTriyugaLahānIlām

Topography around Inaruwa

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

Within 3 km, the terrain around Inaruwa has only modest variations in elevation — a maximum elevation change of 18 m around an average of 85 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 68 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,248 m.

The land around Inaruwa is covered by cropland (62%) and trees (26%) within 3 km, cropland (65%) and trees (20%) within 16 km, and cropland (50%) and trees (44%) within 80 km.

3 km
18 m
16 km
68 m
80 km
3,248 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Īṭahari̇̄ 14 km · Biratnagar 21 km · Dharān 27 km · Rājbirāj 40 km · Dhankutā 46 km · Triyuga 49 km · Lahān 67 km · Ilām 84 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 Inaruwa (26.6068°, 87.1478°, elevation 87 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).