Dehlorān weather in September

In September, Dehlorān sees average daytime highs of 38°C and overnight lows near 23°C, with 1 mm of rain across 0.3 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 41°C in the first days to 36°C by the end. The sky is clear or mostly clear about 98% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Dehlorān's 2nd-clearest and 5th-windiest month. For the whole year in context, see Dehlorān's year-round climate.

Daytime high
38°
4th warmest
Overnight low
23°
9th coldest
Rainfall
1 mm
0.3 wet days
Daylight
12 h 12 min
6:09 AM – 6:21 PM
Cloud cover
4%
2nd clearest
Wind
11 km/h
5th windiest
Solar energy
6.38 kWh/m²
Travel score
1.2
out of 10

Dehlorān is city in Ilam Province, Iran.

Air quality
Very high
PM2.5 43.6 µg/m³ · 2016

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 41°C in the first days to 36°C by the end.

A typical September day in Dehlorān reaches about 38°C in the afternoon and slips back to 23°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 36°C and 41°C. Set against its neighbours, September runs about 4°C cooler than August and about 7°C warmer than October.

20°30°40°151015202530
Avg high (°C)Avg low (°C)
14126
24126
34125
44125
54025
64025
74025
84024
94024
104024
113924
123924
133924
143924
153923
163823
173823
183823
193823
203823
213823
223722
233722
243722
253722
263622
273622
283622
293621
303621

How September really feels in Dehlorān

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
12 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.

Dehlorān weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 928.510.14.5
Feb16° / 717.410.85.6
Mar21° / 11°727.211.87.3
Apr27° / 15°40512.87.4
May34° / 21°91.513.73.6
Jun40° / 25°00.114.10.2
Jul43° / 28°0013.90.0
Aug42° / 27°00.113.20.0
Sep38° / 23°10.312.21.2
Oct31° / 19°17211.25.6
Nov22° / 12°625.310.37.7
Dec16° / 847.59.95.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 98% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 2% of September, with mostly cloudy or overcast conditions the remaining 0%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
24991
25991
26991
27991
28991
29991
30982

Chance of precipitation in September

Any precipitation

Dehlorān gets around 1 mm of rain over 0.3 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 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
130
140
150
160
170
180
190
200
211
221
231
241
251
261
271
282
292
302

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
181000
191000
20991
21991
22991
23991
24991
25991
26991
27991
28991
29982
30982

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over September. Sunrise moves from 5:59 AM to 6:19 AM, and sunset from 6:42 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:596:42
212.76:006:41
312.66:016:39
412.66:016:38
512.66:026:36
612.56:036:35
712.56:036:34
812.56:046:32
912.46:056:31
1012.46:056:30
1112.46:066:28
1212.36:076:27
1312.36:076:25
1412.36:086:24
1512.26:096:23
1612.26:096:21
1712.26:106:20
1812.16:116:18
1912.16:116:17
2012.16:126:16
2112.06:136:14
2212.06:136:13
2312.06:146:11
2411.96:156:10
2511.96:156:09
2611.96:166:07
2711.86:176:06
2811.86:176:04
2911.86:186:03
3011.76:196:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.38 kWh/m².

For context, solar energy here swings from a low near 2.94 kWh/m² to a high of 8.02 kWh/m² in June across the year — September's 6.38 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
17.0Intense
26.9Intense
36.9Intense
46.8Intense
56.8Intense
66.8Intense
76.7Intense
86.7Intense
96.7Intense
106.6Intense
116.6Intense
126.5Intense
136.5Intense
146.5Intense
156.4Intense
166.4Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.1Intense
226.1Intense
236.0Intense
246.0Intense
256.0Bright
265.9Bright
275.9Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Hazard calendar for Dehlorān

In seasonPeak

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

Dehlorān sees seasonal dust haze (March–May), heaviest in May.

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

Is September a good time to visit Dehlorān?

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

1.2
Sightseeing
9th-best month of the year
4.6
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Dehlorān.

What to pack for Dehlorān in September

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

In September, Dehlorān sees daytime highs around 38°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Dehlorān in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks 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 Dehlorān peaks around June 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 16UV 10Jan 12UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun10Very high
Jul9Very high
Aug10Very high
Sep7High
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Dehlorān 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 Dehlorān is worst in April — around 55 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (November, 34 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Dehlorān's WHO annual average of 43.6 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModerateApr 2155 µg/m³Nov 2334 µg/m³
PM2.5 (µg/m³)Level
Jan36Poor
Feb41Poor
Mar51Poor
Apr55Unhealthy
May54Poor
Jun47Poor
Jul46Poor
Aug44Poor
Sep42Poor
Oct40Poor
Nov34Moderate
Dec34Moderate
Location & terrain

Where is Dehlorān?

Dehlorān sits at 32.7°N, 47.3°E, 224 m above sea level, in Iran. The nearest listed city is Ābdānān, 36 km away.

AndīmeshkShush

Topography around Dehlorān

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

Within 3 km, the terrain around Dehlorān has only modest variations in elevation — a maximum elevation change of 110 m around an average of 225 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,319 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,482 m.

The land around Dehlorān is covered by cropland (34%), bare terrain (31%) and grassland (23%) within 3 km, bare terrain (42%), cropland (29%) and grassland (28%) within 16 km, and grassland (41%) and bare terrain (41%) within 80 km.

3 km
110 m
16 km
1,319 m
80 km
2,482 m
grasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ābdānān 36 km · Darreh Shahr 51 km · ‘Alī al Gharbī 60 km · Poldokhtar 66 km · Al ‘Amārah 96 km · Kūhdasht 99 km · Andīmeshk 105 km · Shush 107 km

Iran travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 352% of US
price level, 2025
GDP per capita
$3,924
2025
Happiness
5.2 / 10
World Happiness, 2025
Safe drinking water
94%
of population, 2024
Homicide rate
2.4
per 100k, 2014
Road deaths
21.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 492
Religion
Muslim 99%Christian 1%Baha'i 0%agnostic 0%

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 Dehlorān (32.6941°, 47.2679°, elevation 224 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).