Āstārā weather in September

In September, Āstārā sees average daytime highs of 23°C and overnight lows near 17°C, with 125 mm of rain across 11.7 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 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 42% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Āstārā's 4th-clearest and 6th-windiest month. For the whole year in context, see Āstārā's year-round climate.

Daytime high
23°
4th warmest
Overnight low
17°
9th coldest
Rainfall
125 mm
11.7 wet days
Daylight
12 h 12 min
6:01 AM – 6:16 PM
Cloud cover
51%
4th clearest
Wind
6 km/h
6th windiest
Solar energy
4.31 kWh/m²
Travel score
6.6
out of 10

Āstārā 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 25°C in the first days to 21°C by the end.

A typical September day in Āstārā reaches about 23°C in the afternoon and slips back to 17°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12519
22519
32519
42519
52419
62419
72418
82418
92418
102418
112418
122318
132318
142317
152317
162317
172317
182317
192217
202217
212216
222216
232216
242216
252216
262116
272116
282115
292115
302115

How September really feels in Āstārā

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Āstārā 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
Jan / 11014.35.99.60.7
Feb / 10612.8710.50.8
Mar10° / 9913.65.911.72.2
Apr15° / 7913.51.7134.0
May20° / 14°6712.20.114.15.9
Jun24° / 19°377014.67.7
Jul27° / 21°334.9014.47.9
Aug27° / 21°506.1013.57.7
Sep23° / 17°12511.7012.36.6
Oct18° / 13°18815.70.7115.1
Nov13° / 17616.33.19.93.0
Dec / 12214.85.19.41.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26832
36832
46733
56634
66634
76535
86436
96337
106238
116238
126040
135941
145842
155743
165644
175545
185446
195446
205347
215248
225248
235149
245149
255149
265050
275050
284951
294951
304852

Chance of precipitation in September

Any precipitation

Āstārā gets around 125 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 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
128
229
330
431
532
633
734
835
935
1036
1137
1238
1338
1439
1540
1640
1741
1841
1941
2042
2142
2243
2343
2444
2544
2644
2745
2845
2946
3046

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 26% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
121341359
221541348
321641348
421741337
531841326
631941325
732041315
832141314
942141303
1042241303
1142341292
1252441292
1352441281
1462541271
1562541271
1672541261
1772641250
1882741240
1992840230
2092940220
21103039200
22113138190
23123337170
24133436160
25143636140
26153735130
27173934110
28184033100
2919413180
3021423070

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 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 5:48 AM to 6:14 AM, and sunset from 6:40 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:486:40
212.85:496:39
312.85:506:37
412.85:516:36
512.75:526:34
612.75:526:33
712.65:536:31
812.65:546:29
912.55:556:28
1012.55:566:26
1112.55:576:24
1212.45:586:23
1312.45:596:21
1412.36:006:19
1512.36:016:18
1612.26:016:16
1712.26:026:15
1812.26:036:13
1912.16:046:11
2012.16:056:10
2112.06:066:08
2212.06:076:06
2311.96:086:05
2411.96:096:03
2511.96:106:01
2611.86:116:00
2711.86:125:58
2811.76:125:57
2911.76:135:55
3011.66:145:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.31 kWh/m².

For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 6.66 kWh/m² in July across the year — September's 4.31 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.7Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Hazard calendar for Āstārā

In seasonPeak

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

Āstārā's rainy season runs September–March, 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 Āstārā?

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
5.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Āstārā for sightseeing.

What to pack for Āstārā in September

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

In September, Āstārā sees daytime highs around 23°C and nights near 17°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Āstārā 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 offshore is warmest in August at about 28°C and coldest in February near 9°C.

It's comfortable for a long swim from May 25 to Oct 31 — about 5.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar10Bracing
Apr13Bracing
May19Cool
Jun24Refreshing
Jul27Warm
Aug28Warm
Sep26Warm
Oct22Refreshing
Nov18Cool
Dec14Bracing

UV index in Āstārā 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 Āstārā peaks around July 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 20UV 9Dec 17UV 2
UV index (midday)Level
Jan3Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Āstārā 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 Āstārā is worst in March — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2122 µg/m³Jul 1314 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar22Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug18Moderate
Sep20Moderate
Oct18Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Āstārā?

Āstārā sits at 38.4°N, 48.9°E, -22 m above sea level, in Iran. The nearest listed city is Astara, 3.0 km away.

Topography around Āstārā

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

Within 3 km, the terrain around Āstārā has only modest variations in elevation — a maximum elevation change of 14 m around an average of -24 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,326 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,246 m.

The land around Āstārā is covered by water (31%), artificial surfaces (26%) and cropland (22%) within 3 km, water (48%) and trees (35%) within 16 km, and water (48%) within 80 km.

3 km
14 m
16 km
1,326 m
80 km
3,246 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Astara 3.0 km · Lankaran 36 km · Ardabīl 54 km · Lerik 55 km · Hashtpar 71 km · Jalilabad 93 km · Germī 95 km · Khalkhāl 95 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 Āstārā (38.4308°, 48.8699°, elevation -22 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).