Lahān in Fall

In fall (September, October and November), Lahān sees average daytime highs around 29°C and overnight lows near 20°C, with 300 mm of rain over about 31 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.

Over the season highs ease from about 31°C in early September to 26°C by late November. The sky is clear or mostly clear about 60% of the time across fall, and the air most often feels miserable.

Fall is Lahān's 2nd-best season to visit on our travel score. For the whole year in context, see Lahān's year-round climate.

Avg daytime high
29°C
3rd-warmest season
Avg overnight low
20°C
Rainfall
300 mm
31 wet days
Avg wind
5 km/h
Travel score
5.8
2nd-best season
Months
Sep · Oct · Nov

Temperature in Lahān in Fall

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 31°C in early September to 26°C by late November.

A typical fall day in Lahān reaches about 29°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.

10°15°20°25°30°35°SepOctNov

How fall really feels in Lahān

Once humidity and wind are folded in, fall brings about 47 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C
47
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Lahān weather by month

How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 10°121.810.58.5
Feb26° / 13°122.111.18.5
Mar31° / 17°122.411.85.6
Apr35° / 22°315.612.63.1
May34° / 24°9713.713.32.7
Jun33° / 26°2522313.62.5
Jul31° / 26°41327.613.52.6
Aug31° / 26°2792712.92.6
Sep31° / 25°24023.112.23.2
Oct30° / 21°576.911.45.8
Nov28° / 16°40.510.78.3
Dec24° / 11°40.810.49.1

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time across fall.

0%25%50%75%100%SepOctNov

Chance of precipitation in Fall

Any precipitation

Lahān gets around 300 mm of rain over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.

0%20%40%60%80%100%SepOctNov

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

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

0%25%50%75%100%SepOctNov

Wind in Fall

Winds average 5 km/h across fall.

0246810SepOctNov

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 36 min in early September to 10 h 30 min by late November. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMSepOctNov

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 4.2 kWh/m².

012345SepOctNov
Planning a trip in fall

Hazard calendar for Lahān

In seasonPeak

In fall, Lahān overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Lahān'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 fall a good time to visit Lahān?

Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

5.8
Sightseeing
2nd-best month of the year
7.1
Beach & pool
1st-best month of the year

fall is a reasonable time to visit Lahān for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Lahān in Fall

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

In fall, Lahān sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. About 31 days see rain.

light clothesrain gear

UV index in Lahān in Fall

LowModerateHighVery highExtreme

Clear-sky midday UV across fall averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lahān peaks around July 19 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 18 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 11Jan 18UV 4
UV index (midday)Level
Jan4Moderate
Feb4Moderate
Mar9Very high
Apr7Very high
May8Very high
Jun7High
Jul12Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec4Moderate

Air quality in Lahān in Fall

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lahān is worst in January — around 169 µg/m³ PM2.5 (very unhealthy), about 4.9× the cleanest month (July, 35 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyJan 12167 µg/m³Jul 2036 µg/m³
PM2.5 (µg/m³)Level
Jan169Very unhealthy
Feb138Unhealthy
Mar107Unhealthy
Apr87Unhealthy
May70Unhealthy
Jun57Unhealthy
Jul35Moderate
Aug43Poor
Sep55Unhealthy
Oct87Unhealthy
Nov125Unhealthy
Dec160Very unhealthy
Location & terrain

Where is Lahān?

Lahān sits at 26.7°N, 86.5°E, 123 m above sea level, in Nepal. The nearest listed city is Triyuga, 23 km away.

JanakpurInaruwaJaleshwarĪṭahari̇̄Dharān

Topography around Lahān

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

Within 3 km, the terrain around Lahān has only modest variations in elevation — a maximum elevation change of 32 m around an average of 115 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 367 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,111 m.

The land around Lahān is covered by cropland (61%) within 3 km, cropland (54%) and trees (38%) within 16 km, and cropland (47%) and trees (45%) within 80 km.

3 km
32 m
16 km
367 m
80 km
3,111 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Fall weather nearby: Triyuga 23 km · Siraha 28 km · Rājbirāj 33 km · Janakpur 55 km · Inaruwa 67 km · Jaleshwar 68 km · Īṭahari̇̄ 79 km · Dharān 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
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 Lahān (26.7202°, 86.4826°, elevation 123 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.