Īlām weather in September

In September, Īlām sees average daytime highs of 31°C and overnight lows near 15°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 34°C in the first days to 29°C by the end. The sky is clear or mostly clear about 95% 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 Īlām's 1st-clearest and 5th-windiest month. For the whole year in context, see Īlām's year-round climate.

Daytime high
31°
4th warmest
Overnight low
15°
9th coldest
Rainfall
1 mm
0.3 wet days
Daylight
12 h 12 min
6:12 AM – 6:25 PM
Cloud cover
6%
1st clearest
Wind
7 km/h
5th windiest
Solar energy
6.36 kWh/m²
Travel score
5.9
out of 10

Īlām is city in Ilam Province, Iran.

Air quality
Elevated
PM2.5 18.7 µg/m³ · 2020

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 34°C in the first days to 29°C by the end.

A typical September day in Īlām reaches about 31°C in the afternoon and slips back to 15°C overnight — a 17°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 about 4°C cooler than August and about 7°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13417
23417
33417
43417
53416
63316
73316
83316
93316
103315
113215
123215
133215
143215
153215
163115
173114
183114
193114
203114
213014
223014
233014
243014
253013
262913
272913
282913
292913
302813

How September really feels in Īlām

Once humidity and wind are folded in, September averages 13 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
13
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.

Īlām 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 daysSnow daysDaylight (hours)Travel score
Jan / -1°8910.15.2101.4
Feb10° / -0°8810.73.610.72.2
Mar14° / 9611.11.411.74.2
Apr19° / 679.5012.86.5
May26° / 12°214.9013.77.7
Jun32° / 17°10.3014.25.2
Jul36° / 20°00.10142.9
Aug36° / 19°00013.22.9
Sep31° / 15°10.3012.25.9
Oct24° / 10°304.3011.28.2
Nov16° / 7380.110.35.2
Dec10° / 788.81.89.82.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 95% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of September, with mostly cloudy or overcast conditions the remaining 1%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11000
21000
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
151000
161000
171000
181000
191000
201000
21991
22991
23991
24991
25991
26982
27982
28982
29964
30964

Chance of precipitation in September

Any precipitation

Īlām 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 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
232
242
252
262
272
283
293
303

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:02 AM to 6:22 AM, and sunset from 6:46 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:026:46
212.76:036:45
312.76:036:43
412.66:046:42
512.66:056:40
612.66:066:39
712.56:066:38
812.56:076:36
912.56:086:35
1012.46:086:33
1112.46:096:32
1212.36:106:31
1312.36:106:29
1412.36:116:28
1512.26:126:26
1612.26:126:25
1712.26:136:23
1812.16:146:22
1912.16:156:20
2012.16:156:19
2112.06:166:18
2212.06:176:16
2312.06:176:15
2411.96:186:13
2511.96:196:12
2611.86:206:10
2711.86:206:09
2811.86:216:08
2911.76:226:06
3011.76:226:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.36 kWh/m².

For context, solar energy here swings from a low near 2.85 kWh/m² to a high of 8.05 kWh/m² in June across the year — September's 6.36 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.9Intense
26.9Intense
36.9Intense
46.8Intense
56.8Intense
66.8Intense
76.7Intense
86.7Intense
96.6Intense
106.6Intense
116.6Intense
126.5Intense
136.5Intense
146.4Intense
156.4Intense
166.3Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.1Intense
226.1Intense
236.0Intense
246.0Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Īlām

In seasonPeak

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

Īlām's rainy season runs November–April, when most of the year's rain falls.

Īlām sees seasonal dust haze (April–May), heaviest in May.

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

Is September a good time to visit Īlām?

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

5.9
Sightseeing
4th-best month of the year
8.8
Beach & pool
1st-best month of the year

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

What to pack for Īlām in September

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

In September, Īlām sees daytime highs around 31°C and nights near 15°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Īlām in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Īlām peaks around June 13 at about 10 (extreme) — 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 highExtremeVery highHighModerateJun 13UV 10Jan 12UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May10Very high
Jun11Extreme
Jul9Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Īlām 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 Īlām is worst in May — around 23 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Īlām's WHO annual average of 18.7 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1223 µg/m³Nov 2315 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar21Moderate
Apr22Moderate
May23Moderate
Jun20Moderate
Jul19Moderate
Aug19Moderate
Sep18Moderate
Oct18Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is Īlām?

Īlām sits at 33.6°N, 46.4°E, 1,403 m above sea level, in Iran. The nearest listed city is Eyvān, 24 km away.

Darreh ShahrSarpol-e Z̄ahābKūhdashtĀbdānān

Topography around Īlām

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

Within 3 km, the terrain around Īlām has large variations in elevation — a maximum elevation change of 620 m around an average of 1,488 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,803 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,742 m.

The land around Īlām is covered by artificial surfaces (41%) and grassland (38%) within 3 km, grassland (58%) within 16 km, and grassland (55%) and bare terrain (23%) within 80 km.

3 km
620 m
16 km
1,803 m
80 km
2,742 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Eyvān 24 km · Eslāmābād-e Gharb 53 km · Mandalī 81 km · Kermanshah 96 km · Darreh Shahr 104 km · Sarpol-e Z̄ahāb 105 km · Kūhdasht 111 km · Ābdānān 117 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 Īlām (33.6374°, 46.4227°, elevation 1,403 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).