Behshahr weather in September

In September, Behshahr sees average daytime highs of 28°C and overnight lows near 21°C, with 71 mm of rain across 8.2 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 26°C by the end. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Behshahr's 3rd-clearest and 7th-windiest month. For the whole year in context, see Behshahr's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
21°
9th coldest
Rainfall
71 mm
8.2 wet days
Daylight
12 h 12 min
5:43 AM – 5:57 PM
Cloud cover
37%
3rd clearest
Wind
8 km/h
7th windiest
Solar energy
4.6 kWh/m²
Travel score
6.6
out of 10

Behshahr is city in Mazandaran province, Iran.

Founded
1906

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 30°C in the first days to 26°C by the end.

A typical September day in Behshahr reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
72923
82922
92922
102922
112922
122922
132822
142822
152821
162821
172821
182821
192721
202721
212720
222720
232720
242720
252620
262620
272619
282619
292619
302619

How September really feels in Behshahr

Once humidity and wind are folded in, September averages 3 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
3
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.

Behshahr weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 647.41.49.83.3
Feb12° / 648.51.910.63.3
Mar15° / 71100.611.74.5
Apr19° / 12°507.9012.96.4
May24° / 17°336013.97.5
Jun28° / 21°254.3014.57.2
Jul30° / 24°254.7014.35.6
Aug31° / 24°224.6013.45.2
Sep28° / 21°718.2012.26.6
Oct23° / 16°787.6011.17.5
Nov17° / 10°878.70.3105.8
Dec13° / 607.50.49.54.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% 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 31%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27426
37327
47228
57228
67129
77030
87030
96931
106931
116931
126832
136832
146832
156832
166832
176832
186832
196832
206832
216832
226931
236832
246832
256931
266931
276931
286931
296931
306931

Chance of precipitation in September

Any precipitation

Behshahr gets around 71 mm of rain over 8.2 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 27% and peaks near 29% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
120
221
322
422
523
624
725
825
926
1026
1127
1227
1327
1427
1528
1628
1728
1828
1928
2028
2128
2228
2328
2428
2529
2629
2729
2829
2929
3029

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 62% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1031439403
2031539403
3031539403
4031639393
5031739392
6041739382
7041839372
8041940361
9041940351
10152040341
11152140321
12152240311
13162340291
14172440280
15172540260
16282639250
17282839230
18292938210
193103038190
203113137180
214123237160
225123336140
235133435130
246143434110
257153533100
26816353290
27917353180
281018353070
291119352960
301220352850

Wind in September

Winds average 8 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.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 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 66 minutes over September. Sunrise moves from 5:31 AM to 5:55 AM, and sunset from 6:20 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:316:20
212.85:326:19
312.75:336:17
412.75:336:16
512.75:346:14
612.65:356:13
712.65:366:11
812.55:376:10
912.55:376:08
1012.55:386:06
1112.45:396:05
1212.45:406:03
1312.45:416:02
1412.35:426:00
1512.35:425:59
1612.25:435:57
1712.25:445:55
1812.25:455:54
1912.15:465:52
2012.15:475:51
2112.05:475:49
2212.05:485:48
2311.95:495:46
2411.95:505:44
2511.95:515:43
2611.85:525:41
2711.85:525:40
2811.75:535:38
2911.75:545:37
3011.75:555:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.6 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 6.4 kWh/m² in June across the year — September's 4.6 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.2Bright
35.2Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
84.9Bright
94.8Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.6Bright
154.6Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.4Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
Planning a trip in September

Is September a good time to visit Behshahr?

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

6.6
Sightseeing
4th-best month of the year
7.4
Beach & pool
4th-best month of the year

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

What to pack for Behshahr in September

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

In September, Behshahr sees daytime highs around 28°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Behshahr in September

The nearest coast averages about 27°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 21 km away) is warmest in August at about 29°C and coldest in February near 11°C.

It's comfortable for a long swim from May 16 to Nov 10 — about 5.9 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar12Bracing
Apr15Cool
May20Refreshing
Jun25Warm
Jul27Warm
Aug29Tropical
Sep27Warm
Oct24Refreshing
Nov19Cool
Dec15Cool

UV index in Behshahr 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 Behshahr peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 18UV 9Jan 10UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May7Very high
Jun7Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Moderate

Air quality in Behshahr 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 Behshahr is worst in March — around 33 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 19 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1633 µg/m³Jul 1719 µg/m³
PM2.5 (µg/m³)Level
Jan30Moderate
Feb32Moderate
Mar33Moderate
Apr32Moderate
May28Moderate
Jun24Moderate
Jul19Moderate
Aug24Moderate
Sep32Moderate
Oct32Moderate
Nov30Moderate
Dec29Moderate
Location & terrain

Where is Behshahr?

Behshahr sits at 36.7°N, 53.6°E, 10 m above sea level, in Iran. The nearest listed city is Nekā, 23 km away.

Topography around Behshahr

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

Within 3 km, the terrain around Behshahr has significant variations in elevation — a maximum elevation change of 469 m around an average of 69 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,479 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,777 m.

The land around Behshahr is covered by trees (36%), artificial surfaces (36%) and cropland (23%) within 3 km, trees (43%) and cropland (32%) within 16 km, and water (32%) and trees (26%) within 80 km.

3 km
469 m
16 km
1,479 m
80 km
3,777 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Nekā 23 km · Galūgāh 23 km · Bandar-e Gaz 36 km · Sari 46 km · Kord Kūy 51 km · Bandar-e Torkaman 52 km · Jūybār 57 km · Gomīshān 63 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 Behshahr (36.6923°, 53.5526°, elevation 10 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).