Behbahān weather in September

In September, Behbahān sees average daytime highs of 41°C and overnight lows near 24°C, with 1 mm of rain across 0.8 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 43°C in the first days to 39°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 Behbahān's 2nd-clearest and 6th-windiest month. For the whole year in context, see Behbahān's year-round climate.

Daytime high
41°
4th warmest
Overnight low
24°
9th coldest
Rainfall
1 mm
0.8 wet days
Daylight
12 h 12 min
5:58 AM – 6:09 PM
Cloud cover
4%
2nd clearest
Wind
10 km/h
6th windiest
Solar energy
6.38 kWh/m²
Travel score
0.2
out of 10

Behbahān is city in Khuzestan province, Iran.

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 43°C in the first days to 39°C by the end.

A typical September day in Behbahān reaches about 41°C in the afternoon and slips back to 24°C overnight — a 17°C spread between the day's warmth and the night's chill. On most days the high lands between 38°C and 43°C. Set against its neighbours, September runs about 3°C cooler than August and about 6°C warmer than October.

20°30°40°50°151015202530
Avg high (°C)Avg low (°C)
14326
24326
34326
44226
54225
64225
74225
84225
94225
104225
114124
124124
134124
144124
154124
164124
174123
184023
194023
204023
214023
224023
234023
244022
253922
263922
273922
283922
293922
303821

How September really feels in Behbahān

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
27 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.

Behbahān 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
Jan18° / 115910.26.2
Feb20° / 716.810.97.1
Mar24° / 12°70611.87.9
Apr31° / 17°283.712.75.6
May38° / 22°60.813.51.3
Jun43° / 26°0013.90.0
Jul45° / 28°00.113.80.0
Aug44° / 28°10.613.10.0
Sep41° / 24°10.812.20.2
Oct35° / 19°51.511.23.4
Nov26° / 13°785.410.57.5
Dec20° / 1187.410.17.0

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 1% of September, with mostly cloudy or overcast conditions the remaining 1%.

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
22991
23982
24982
25982
26982
27982
28982
29982
30982

Chance of precipitation in September

Any precipitation

Behbahān gets around 1 mm of rain over 0.8 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 3% and peaks near 4% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
114
124
133
143
153
163
172
182
192
202
212
222
231
241
251
261
271
281
291
301

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17111882
27211872
37410871
47510861
57510861
67510861
7779851
8789751
9789751
10808741
11808741
12818641
13837631
14837631
15847531
16867520
17876520
18886420
19886420
20886420
21886420
22906310
23906310
24906310
25915310
26915310
27915310
28915310
29915310
30925300

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
309calm

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 5:49 AM to 6:06 AM, and sunset from 6:28 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:496:28
212.65:506:27
312.65:506:26
412.65:516:25
512.55:526:23
612.55:526:22
712.55:536:21
812.45:536:19
912.45:546:18
1012.45:546:17
1112.35:556:15
1212.35:566:14
1312.35:566:13
1412.25:576:11
1512.25:576:10
1612.25:586:09
1712.25:586:08
1812.15:596:06
1912.16:006:05
2012.16:006:04
2112.06:016:02
2212.06:016:01
2312.06:026:00
2411.96:035:58
2511.96:035:57
2611.96:045:56
2711.86:045:54
2811.86:055:53
2911.86:065:52
3011.76:065:50

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 3.22 kWh/m² to a high of 7.92 kWh/m² in June across the year — September's 6.38 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.7Intense
66.7Intense
76.7Intense
86.6Intense
96.6Intense
106.6Intense
116.5Intense
126.5Intense
136.5Intense
146.4Intense
156.4Intense
166.4Intense
176.3Intense
186.3Intense
196.3Intense
206.2Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.0Intense
266.0Intense
276.0Bright
285.9Bright
295.9Bright
305.8Bright
Planning a trip in September

Hazard calendar for Behbahān

In seasonPeak

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

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

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

Is September a good time to visit Behbahān?

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

0.2
Sightseeing
9th-best month of the year
2.7
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Behbahān.

What to pack for Behbahān in September

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

In September, Behbahān sees daytime highs around 41°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Behbahān in September

The nearest coast averages about 32°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 54 km away) is warmest in August at about 33°C and coldest in February near 16°C.

It's comfortable for a long swim from Apr 1 to Dec 14 — about 8.5 months when the water holds above 20°C.

20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar18Cool
Apr22Refreshing
May26Warm
Jun29Tropical
Jul31Tropical
Aug33Tropical
Sep32Tropical
Oct29Tropical
Nov24Warm
Dec20Cool

UV index in Behbahān in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Behbahān peaks around August 11 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateAug 11UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar7High
Apr7High
May8Very high
Jun10Very high
Jul9Very high
Aug10Very high
Sep6High
Oct7High
Nov5Moderate
Dec3Moderate

Air quality in Behbahān 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 Behbahān is worst in April — around 45 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorPoorModerateApr 1545 µg/m³Dec 1733 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb38Poor
Mar44Poor
Apr45Poor
May43Poor
Jun34Moderate
Jul37Poor
Aug35Moderate
Sep34Moderate
Oct35Moderate
Nov34Moderate
Dec33Moderate
Location & terrain

Where is Behbahān?

Behbahān sits at 30.6°N, 50.2°E, 326 m above sea level, in Iran. The nearest listed city is Shahrak-e Ţāleqānī, 27 km away.

Topography around Behbahān

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

Within 3 km, the terrain around Behbahān has only modest variations in elevation — a maximum elevation change of 50 m around an average of 324 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 862 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,481 m.

The land around Behbahān is covered by artificial surfaces (56%) and cropland (30%) within 3 km, grassland (54%) and cropland (35%) within 16 km, and grassland (55%) and bare terrain (24%) within 80 km.

3 km
50 m
16 km
862 m
80 km
3,481 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Shahrak-e Ţāleqānī 27 km · Līkak 36 km · Dehdasht 38 km · Aghajari 41 km · Charām 51 km · Omīdīyeh 55 km · Dogonbadan 59 km · Bandar-e Deylam 61 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 Behbahān (30.5959°, 50.2417°, elevation 326 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).