Katālem va Sādāt Shahr weather in September

In September, Katālem va Sādāt Shahr sees average daytime highs of 24°C and overnight lows near 22°C, with 150 mm of rain across 12.5 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 56% 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 Katālem va Sādāt Shahr's 4th-clearest and 8th-windiest month. For the whole year in context, see Katālem va Sādāt Shahr's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
150 mm
12.5 wet days
Daylight
12 h 12 min
5:55 AM – 6:08 PM
Cloud cover
41%
4th clearest
Wind
10 km/h
8th windiest
Solar energy
3.85 kWh/m²
Travel score
6.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 23°C by the end.

A typical September day in Katālem va Sādāt Shahr reaches about 24°C in the afternoon and slips back to 22°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12624
22624
32624
42624
52523
62523
72523
82523
92523
102523
112523
122523
132523
142423
152422
162422
172422
182422
192422
202422
212422
222422
232321
242321
252321
262321
272321
282321
292321
302321

Katālem va Sādāt Shahr weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 1631719.82.3
Feb10° / 13014.51.710.62.1
Mar12° / 10514.50.311.72.8
Apr15° / 13°7511.8012.94.5
May20° / 17°478.8013.96.6
Jun24° / 22°436.3014.58.0
Jul26° / 24°436.5014.37.8
Aug27° / 25°527.2013.47.5
Sep24° / 22°15012.5012.36.8
Oct21° / 19°24615.70115.8
Nov17° / 14°24317.20.2104.3
Dec13° / 11°18416.60.39.53.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18020
28020
37822
47822
57723
67624
77525
87426
97327
107327
117129
127129
137030
147030
156931
166931
176931
186832
196832
206733
216733
226733
236634
246733
256634
266535
276535
286436
296337
306337

Chance of precipitation in September

Any precipitation

Katālem va Sādāt Shahr gets around 150 mm of rain over 12.5 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 41% and peaks near 49% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
134
235
335
436
537
637
738
838
938
1038
1139
1239
1339
1440
1540
1640
1741
1841
1942
2042
2143
2244
2344
2445
2546
2647
2747
2848
2949
3049

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 40% of days. Sticky, muggy-or-worse air turns up on roughly 69% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10214383314
20215373313
30215373312
40216373311
50317373310
6031837339
7031938338
8032038327
9042038326
10042139325
11042239314
12042339303
13042440292
14052441282
15052541271
16052542261
17062643251
18062643241
19072744220
20072744210
21182744200
22192844190
231102843180
241112943170
251122943160
261132942150
271143041140
282153040130
292163139120
303173138110

Wind in September

Winds average 10 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 5:42 AM to 6:06 AM, and sunset from 6:32 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:426:32
212.85:436:30
312.75:446:29
412.75:456:27
512.75:456:26
612.65:466:24
712.65:476:23
812.65:486:21
912.55:496:19
1012.55:506:18
1112.45:506:16
1212.45:516:15
1312.45:526:13
1412.35:536:12
1512.35:546:10
1612.25:556:08
1712.25:556:07
1812.25:566:05
1912.15:576:04
2012.15:586:02
2112.05:596:01
2212.06:005:59
2311.96:005:57
2411.96:015:56
2511.96:025:54
2611.86:035:53
2711.86:045:51
2811.76:055:50
2911.76:065:48
3011.76:065:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.85 kWh/m².

For context, solar energy here swings from a low near 1.82 kWh/m² to a high of 5.94 kWh/m² in June across the year — September's 3.85 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.2Bright
84.2Bright
94.1Bright
104.0Bright
114.0Bright
124.0Moderate
133.9Moderate
143.9Moderate
153.9Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Katālem va Sādāt Shahr

In seasonPeak

In September, Katālem va Sādāt Shahr sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Katālem va Sādāt Shahr's rainy season runs September–February, when most of the year's rain falls.

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

Is September a good time to visit Katālem va Sādāt Shahr?

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

6.8
Sightseeing
4th-best month of the year
5.8
Beach & pool
4th-best month of the year

September is a reasonable time to visit Katālem va Sādāt Shahr for sightseeing.

What to pack for Katālem va Sādāt Shahr in September

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

In September, Katālem va Sādāt Shahr sees daytime highs around 24°C and nights near 22°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Katālem va Sādāt Shahr in September

The nearest coast averages about 26°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 16 km away) is warmest in August at about 28°C and coldest in February near 11°C.

It's comfortable for a long swim from May 22 to Nov 5 — about 5.5 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb11Bracing
Mar11Bracing
Apr14Bracing
May19Cool
Jun24Warm
Jul27Warm
Aug28Warm
Sep26Warm
Oct23Refreshing
Nov19Cool
Dec15Bracing

UV index in Katālem va Sādāt Shahr 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 Katālem va Sādāt Shahr peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 17UV 9Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May9Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec3Moderate

Air quality in Katālem va Sādāt Shahr 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 Katālem va Sādāt Shahr is worst in February — around 50 µg/m³ PM2.5 (poor), about 3.1× the cleanest month (July, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorFeb 1149 µg/m³Jul 1817 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb50Poor
Mar45Poor
Apr40Poor
May33Moderate
Jun21Moderate
Jul16Moderate
Aug20Moderate
Sep25Moderate
Oct30Moderate
Nov37Poor
Dec45Poor
Location & terrain

Where is Katālem va Sādāt Shahr?

Katālem va Sādāt Shahr sits at 36.9°N, 50.7°E, -9 m above sea level, in Iran. The nearest listed city is Rāmsar, 5.0 km away.

Topography around Katālem va Sādāt Shahr

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Katālem va Sādāt Shahr.

Within 3 km, the terrain around Katālem va Sādāt Shahr has significant variations in elevation — a maximum elevation change of 449 m around an average of 40 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,351 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,754 m.

The land around Katālem va Sādāt Shahr is covered by trees (47%) and water (22%) within 3 km, trees (52%) and water (42%) within 16 km, and water (44%), grassland (28%) and trees (21%) within 80 km.

3 km
449 m
16 km
2,351 m
80 km
4,754 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Rāmsar 5.0 km · Tonekābon 18 km · Rūdsar 45 km · Amlash 51 km · Langarūd 59 km · Chālūs 70 km · Lāhījān 70 km · Nowshahr 76 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 Katālem va Sādāt Shahr (36.8888°, 50.6964°, elevation -9 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).