Samdrup Jongkhar weather in September

In September, Samdrup Jongkhar sees average daytime highs of 29°C and overnight lows near 23°C, with 312 mm of rain across 23.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels oppressive.

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 Samdrup Jongkhar's 9th-clearest and 11th-windiest month. For the whole year in context, see Samdrup Jongkhar's year-round climate.

Daytime high
29°
4th warmest
Overnight low
23°
9th coldest
Rainfall
312 mm
23.2 wet days
Daylight
12 h 12 min
5:44 AM – 5:53 PM
Cloud cover
76%
9th clearest
Wind
4 km/h
11th windiest
Solar energy
3.93 kWh/m²
Travel score
3.6
out of 10

Samdrup Jongkhar is place in Samdrup Jongkhar District, Bhutan.

Density
2,086/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 29°C through the month.

A typical September day in Samdrup Jongkhar reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°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)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262922
272922
282922
292922
302922

How September really feels in Samdrup Jongkhar

Once humidity and wind are folded in, September averages 27 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
27
heat index over the day's high
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.

Samdrup Jongkhar weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 92.410.58.4
Feb24° / 12°173.611.18.4
Mar27° / 15°647.611.87.2
Apr28° / 18°22817.412.65.2
May29° / 21°37023.313.34.1
Jun29° / 24°59027.413.73.1
Jul29° / 25°61128.513.52.9
Aug30° / 25°41327.612.92.9
Sep29° / 23°31223.212.23.6
Oct28° / 19°1058.911.46.6
Nov26° / 14°81.410.78.8
Dec23° / 11°50.910.39.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11288
21288
31486
41486
51585
61684
71783
81783
91882
101981
111981
122080
132179
142278
152179
162278
172278
182377
192476
202773
212773
222971
233268
243268
253565
263763
274060
284258
294555
304753

Chance of precipitation in September

Any precipitation

Samdrup Jongkhar gets around 312 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 77% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
285
385
484
584
683
782
881
981
1080
1179
1278
1378
1478
1578
1677
1777
1877
1977
2076
2175
2274
2374
2473
2572
2670
2769
2868
2966
3064

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1005347
2005446
3005644
4005842
5006040
6006238
7006436
8006634
9006832
10007030
11007228
12007327
13017425
14017524
15017623
16017821
17017920
18018019
19028018
20028117
21028216
22038215
23048313
24048412
25058411
26068410
2708839
2809829
29011818
30113797

Wind in September

Winds average 4 km/h in September.

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

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 5:37 AM to 5:50 AM, and sunset from 6:10 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:376:10
212.55:376:09
312.55:386:08
412.55:386:07
512.55:396:06
612.45:396:05
712.45:406:04
812.45:406:02
912.35:416:01
1012.35:416:00
1112.35:415:59
1212.35:425:58
1312.25:425:57
1412.25:435:55
1512.25:435:54
1612.25:445:53
1712.15:445:52
1812.15:455:51
1912.15:455:49
2012.05:455:48
2112.05:465:47
2212.05:465:46
2312.05:475:45
2411.95:475:44
2511.95:485:42
2611.95:485:41
2711.95:495:40
2811.85:495:39
2911.85:505:38
3011.85:505:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.93 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 5.06 kWh/m² in April across the year — September's 3.93 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
124.0Moderate
134.0Moderate
144.0Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
234.0Moderate
244.0Moderate
254.0Moderate
264.0Moderate
274.0Bright
284.0Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Samdrup Jongkhar

In seasonPeak

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

Samdrup Jongkhar's monsoon runs May–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 Samdrup Jongkhar?

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

3.6
Sightseeing
9th-best month of the year
4.7
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Samdrup Jongkhar.

What to pack for Samdrup Jongkhar in September

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

In September, Samdrup Jongkhar sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

UV index in Samdrup Jongkhar 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 Samdrup Jongkhar peaks around July 14 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near February 8 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 highHighModerateJul 14UV 11Feb 8UV 4
UV index (midday)Level
Jan4Moderate
Feb4Moderate
Mar8Very high
Apr6High
May8Very high
Jun10Extreme
Jul12Extreme
Aug9Very high
Sep10Extreme
Oct6High
Nov6High
Dec4Moderate

Air quality in Samdrup Jongkhar 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 Samdrup Jongkhar is worst in February — around 73 µg/m³ PM2.5 (unhealthy), about 3.7× the cleanest month (July, 20 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorFeb 1672 µg/m³Jul 1820 µg/m³
PM2.5 (µg/m³)Level
Jan64Unhealthy
Feb73Unhealthy
Mar67Unhealthy
Apr55Poor
May36Poor
Jun27Moderate
Jul20Moderate
Aug24Moderate
Sep28Moderate
Oct36Poor
Nov45Poor
Dec54Poor
Location & terrain

Where is Samdrup Jongkhar?

Samdrup Jongkhar sits at 26.8°N, 91.5°E, 0 m above sea level, in Bhutan. The nearest listed city is Mongar, 59 km away.

MongarTrashigangJakarTrongsaTsirangPunakhaThimphuPhuentsholing

Topography around Samdrup Jongkhar

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

Within 3 km, the terrain around Samdrup Jongkhar has significant variations in elevation — a maximum elevation change of 495 m around an average of 244 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,292 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,428 m.

The land around Samdrup Jongkhar is covered by trees (84%) within 3 km, trees (69%) and cropland (25%) within 16 km, and trees (65%) and cropland (26%) within 80 km.

3 km
495 m
16 km
2,292 m
80 km
4,428 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Mongar 59 km · Trashigang 59 km · Jakar 112 km · Trongsa 126 km · Tsirang 139 km · Punakha 183 km · Thimphu 199 km · Phuentsholing 210 km

Bhutan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / D / F / G / M
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$4,493
2025
Happiness
5.1 / 10
World Happiness, 2018
Safe drinking water
66%
of population, 2024
Homicide rate
2.5
per 100k, 2020
Road deaths
16.2
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 473
Religion
Lamaistic Buddhist 75%Indian- and Nepali-influenced Hinduism 22%other 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 Samdrup Jongkhar (26.8007°, 91.5052°, elevation 0 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).