Khomām weather in September

In September, Khomām sees average daytime highs of 25°C and overnight lows near 23°C, with 131 mm of rain across 11.7 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 24°C by the end. The sky is clear or mostly clear about 55% 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 Khomām's 4th-clearest and 10th-windiest month. For the whole year in context, see Khomām's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
23°
10th coldest
Rainfall
131 mm
11.7 wet days
Daylight
12 h 12 min
5:59 AM – 6:13 PM
Cloud cover
42%
4th clearest
Wind
11 km/h
10th windiest
Solar energy
4.09 kWh/m²
Travel score
6.8
out of 10

Khomām is city in Gilan 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 27°C in the first days to 24°C by the end.

A typical September day in Khomām reaches about 25°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 28°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62724
72624
82624
92623
102623
112623
122623
132623
142623
152623
162523
172523
182522
192522
202522
212522
222522
232522
242422
252421
262421
272421
282421
292421
302421

Khomām weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 10611.40.59.72.7
Feb10° / 9210.60.710.62.4
Mar12° / 7710.80.111.73.1
Apr15° / 12°497.6012.94.9
May20° / 17°244.90147.2
Jun25° / 22°294.7014.58.2
Jul28° / 25°385.7014.37.4
Aug28° / 25°527.8013.46.8
Sep25° / 23°13111.7012.36.8
Oct22° / 19°17213.60116.2
Nov17° / 14°17714.10.1104.9
Dec13° / 10°11711.40.29.53.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% 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 (%)
17723
27624
37624
47525
57525
67525
77426
87327
97327
107327
117228
127129
137129
147129
157030
167030
177030
186931
196931
206832
216832
226733
236733
246634
256634
266535
276535
286436
296436
306238

Chance of precipitation in September

Any precipitation

Khomām gets around 131 mm of rain over 11.7 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 39% and peaks near 45% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
131
231
332
433
533
634
735
835
936
1037
1137
1238
1338
1438
1539
1639
1740
1840
1940
2041
2141
2242
2342
2443
2543
2644
2744
2845
2945
3045

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 73% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10010413811
20011423710
30012433610
4001343359
5001443348
6011544337
7011644326
8011745326
9011845315
10011945314
11012046303
12012146293
13022146282
14022247272
15022347272
16032347261
17032448251
18032448241
19042548230
20042648220
21052748210
22062847190
23062847180
24072947170
25083046160
26193145150
271103144140
281113243120
292123342110
302133441100

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 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
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2912calm
3012calm

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 5:46 AM to 6:11 AM, and sunset from 6:36 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:466:36
212.85:476:35
312.85:486:33
412.75:486:32
512.75:496:30
612.65:506:29
712.65:516:27
812.65:526:26
912.55:536:24
1012.55:536:22
1112.45:546:21
1212.45:556:19
1312.45:566:18
1412.35:576:16
1512.35:586:14
1612.25:596:13
1712.25:596:11
1812.26:006:10
1912.16:016:08
2012.16:026:06
2112.06:036:05
2212.06:046:03
2311.96:056:02
2411.96:066:00
2511.96:065:58
2611.86:075:57
2711.86:085:55
2811.76:095:54
2911.76:105:52
3011.76:115:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.09 kWh/m².

For context, solar energy here swings from a low near 1.91 kWh/m² to a high of 6.44 kWh/m² in June across the year — September's 4.09 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.4Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.1Bright
164.1Bright
174.0Bright
184.0Moderate
193.9Moderate
203.9Moderate
213.8Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Hazard calendar for Khomām

In seasonPeak

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

Khomām'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 Khomām?

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
6.3
Beach & pool
4th-best month of the year

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

What to pack for Khomām in September

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

In September, Khomām sees daytime highs around 25°C and nights near 23°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Khomām 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 26 km away) is warmest in August at about 28°C and coldest in February near 10°C.

It's comfortable for a long swim from May 22 to Nov 3 — about 5.5 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar11Bracing
Apr13Bracing
May19Cool
Jun24Warm
Jul27Warm
Aug28Warm
Sep26Warm
Oct23Refreshing
Nov18Cool
Dec15Bracing

UV index in Khomām 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 Khomām peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 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 12UV 2
UV index (midday)Level
Jan2Low
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct5Moderate
Nov3Moderate
Dec2Moderate

Air quality in Khomām 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 Khomām is worst in March — around 27 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1826 µg/m³Jul 1315 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb21Moderate
Mar27Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul14Moderate
Aug20Moderate
Sep25Moderate
Oct23Moderate
Nov21Moderate
Dec20Moderate
Location & terrain

Where is Khomām?

Khomām sits at 37.4°N, 49.7°E, -15 m above sea level, in Iran. The nearest listed city is Rasht, 14 km away.

Topography around Khomām

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

Within 3 km, the terrain around Khomām has only modest variations in elevation — a maximum elevation change of 22 m around an average of -18 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 38 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,110 m.

The land around Khomām is covered by cropland (56%) within 3 km, cropland (45%) and water (22%) within 16 km, and water (45%) and trees (26%) within 80 km.

3 km
22 m
16 km
38 m
80 km
3,110 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Rasht 14 km · Bandar-e Anzalī 20 km · Āstāneh-ye Ashrafīyeh 29 km · Şowme‘eh Sarā 32 km · Sīāhkal 32 km · Fūman 36 km · Lāhījān 37 km · Māsāl 47 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 Khomām (37.3902°, 49.6585°, elevation -15 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).