Rasht weather in September

In September, Rasht sees average daytime highs of 25°C and overnight lows near 18°C, with 189 mm of rain across 14.4 wet days and about 12.3 hours of daylight. It is the 4th-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 33% 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 Rasht's 7th-clearest and 10th-windiest month. For the whole year in context, see Rasht's year-round climate.

Daytime high
25°
4th warmest
Overnight low
18°
9th coldest
Rainfall
189 mm
14.4 wet days
Daylight
12 h 12 min
5:59 AM – 6:13 PM
Cloud cover
60%
7th clearest
Wind
6 km/h
10th windiest
Solar energy
4.03 kWh/m²
Travel score
6.0
out of 10

Rasht is city in Gilan Province, Iran.

Air quality
Elevated
PM2.5 20.5 µg/m³ · 2016
Density
3,303/km²
people per km²

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 Rasht reaches about 25°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42719
52719
62719
72719
82619
92619
102619
112619
122618
132618
142618
152618
162518
172518
182518
192518
202517
212517
222517
232517
242417
252417
262417
272416
282416
292416
302416

Rasht weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 12512.62.39.72.6
Feb11° / 12212.43.210.62.7
Mar15° / 11814.40.911.73.9
Apr18° / 10°8812.9012.95.4
May23° / 15°569.50146.8
Jun27° / 19°718014.57.1
Jul29° / 21°828.5014.36.0
Aug29° / 21°10910.6013.45.7
Sep25° / 18°18914.4012.36.0
Oct22° / 14°22215.40115.8
Nov17° / 20114.10.4104.7
Dec13° / 13612.319.53.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25248
35149
45149
55050
65050
75050
84951
94852
104951
114852
124753
134753
144654
154654
164555
174456
184357
194456
204357
214357
224258
234258
244258
254258
264258
274060
284060
294060
303961

Chance of precipitation in September

Any precipitation

Rasht gets around 189 mm of rain over 14.4 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 48% and peaks near 53% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
141
241
342
442
543
644
744
845
945
1045
1146
1246
1347
1447
1548
1648
1749
1849
1950
2050
2151
2251
2351
2451
2552
2652
2752
2852
2953
3053

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 48% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1011951263
2022050253
3022150243
4022251232
5022351222
6032450212
7032551192
8042651181
9042751171
10042851161
11052851151
12052953130
13063052120
14063053110
15073053100
1607315390
1708315290
1809325180
1909335170
20010335160
21011344960
22012354850
23013364640
24115374440
25116374230
26117384030
27219393830
28220403520
29322413320
30423413020

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:37 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:466:37
212.85:476:35
312.85:486:33
412.75:496:32
512.75:506:30
612.65:506:29
712.65:516:27
812.65:526:26
912.55:536:24
1012.55:546:23
1112.45:556:21
1212.45:566:19
1312.45:566:18
1412.35:576:16
1512.35:586:15
1612.25:596:13
1712.26:006:11
1812.26:016:10
1912.16:016:08
2012.16:026:07
2112.06:036:05
2212.06:046:03
2311.96:056:02
2411.96:066:00
2511.96:075:59
2611.86:085:57
2711.86:085:56
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 4.03 kWh/m².

For context, solar energy here swings from a low near 2.04 kWh/m² to a high of 6.21 kWh/m² in June across the year — September's 4.03 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.0Bright
164.0Moderate
174.0Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.6Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Rasht?

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

6.0
Sightseeing
3rd-best month of the year
5.6
Beach & pool
4th-best month of the year

September is a reasonable time to visit Rasht for sightseeing.

What to pack for Rasht in September

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

In September, Rasht sees daytime highs around 25°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Rasht 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 39 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 Rasht 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 Rasht 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 Rasht 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 Rasht is worst in March — around 26 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 14 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Rasht's WHO annual average of 20.5 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1825 µg/m³Jul 1314 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb21Moderate
Mar26Moderate
Apr22Moderate
May21Moderate
Jun16Moderate
Jul14Moderate
Aug19Moderate
Sep24Moderate
Oct22Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Rasht?

Rasht sits at 37.3°N, 49.6°E, 4 m above sea level, in Iran. The nearest listed city is Khomām, 14 km away.

Topography around Rasht

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

Within 3 km, the terrain around Rasht has only modest variations in elevation — a maximum elevation change of 26 m around an average of -1 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 375 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,110 m.

The land around Rasht is covered by artificial surfaces (89%) within 3 km, cropland (50%) and trees (24%) within 16 km, and water (34%), trees (27%) and grassland (23%) within 80 km.

3 km
26 m
16 km
375 m
80 km
3,110 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Khomām 14 km · Şowme‘eh Sarā 24 km · Bandar-e Anzalī 25 km · Fūman 25 km · Sīāhkal 29 km · Āstāneh-ye Ashrafīyeh 31 km · Lāhījān 38 km · Māsāl 41 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 Rasht (37.2761°, 49.5886°, elevation 4 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).