Fasā weather in September

In September, Fasā sees average daytime highs of 31°C and overnight lows near 18°C, with 0 mm of rain across 0.1 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 29°C by the end. The sky is clear or mostly clear about 92% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Fasā's 1st-clearest and 7th-windiest month. For the whole year in context, see Fasā's year-round climate.

Daytime high
31°
4th warmest
Overnight low
18°
9th coldest
Rainfall
0 mm
0.1 wet days
Daylight
12 h 12 min
5:45 AM – 5:55 PM
Cloud cover
11%
1st clearest
Wind
6 km/h
7th windiest
Solar energy
6.56 kWh/m²
Travel score
5.9
out of 10

Fasā is city in Fars 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 33°C in the first days to 29°C by the end.

A typical September day in Fasā reaches about 31°C in the afternoon and slips back to 18°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, September runs about 3°C cooler than August and about 6°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13320
23320
33320
43320
53320
63320
73320
83319
93219
103219
113219
123219
133219
143219
153218
163218
173118
183118
193118
203118
213117
223117
233017
243017
253017
263017
273016
282916
292916
302916

How September really feels in Fasā

Once humidity and wind are folded in, September averages 12 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
12
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.

Fasā weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 515.71.510.43.4
Feb14° / 455.10.4114.6
Mar17° / 475.8011.86.6
Apr23° / 12°153.2012.78.1
May30° / 17°30.9013.46.8
Jun34° / 21°00.1013.83.9
Jul36° / 24°10.3013.72.9
Aug35° / 22°20.50133.6
Sep31° / 18°00.1012.25.9
Oct26° / 13°10.3011.38.9
Nov19° / 132.2010.67.5
Dec14° / 363.20.310.25.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 92% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 1%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1982
2982
3982
4982
5982
6982
7982
8982
9982
10982
11982
12982
13982
14991
15991
16991
17991
18991
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
30991

Chance of precipitation in September

Any precipitation

Fasā gets around 0 mm of rain over 0.1 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 0% and peaks near 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
301

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

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 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
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 36 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over September. Sunrise moves from 5:37 AM to 5:52 AM, and sunset from 6:13 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:376:13
212.65:376:12
312.65:386:11
412.55:386:10
512.55:396:09
612.55:396:07
712.45:406:06
812.45:406:05
912.45:416:04
1012.35:426:02
1112.35:426:01
1212.35:436:00
1312.35:435:59
1412.25:445:57
1512.25:445:56
1612.25:455:55
1712.15:455:54
1812.15:465:52
1912.15:465:51
2012.15:475:50
2112.05:475:49
2212.05:485:47
2312.05:485:46
2411.95:495:45
2511.95:495:44
2611.95:505:42
2711.85:505:41
2811.85:515:40
2911.85:525:39
3011.85:525:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.56 kWh/m².

For context, solar energy here swings from a low near 3.75 kWh/m² to a high of 7.99 kWh/m² in June across the year — September's 6.56 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
17.0Intense
26.9Intense
36.9Intense
46.9Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.7Intense
106.7Intense
116.7Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Is September a good time to visit Fasā?

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

5.9
Sightseeing
6th-best month of the year
8.9
Beach & pool
1st-best month of the year

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

What to pack for Fasā in September

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

In September, Fasā sees daytime highs around 31°C and nights near 18°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Fasā in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fasā peaks around June 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighModerateJun 18UV 12Dec 21UV 4
UV index (midday)Level
Jan4Moderate
Feb7Very high
Mar8Very high
Apr8Very high
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Extreme
Oct8Very high
Nov6High
Dec4Moderate

Air quality in Fasā 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 Fasā is worst in April — around 35 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1834 µg/m³Nov 1717 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb26Moderate
Mar30Moderate
Apr35Moderate
May32Moderate
Jun23Moderate
Jul29Moderate
Aug21Moderate
Sep22Moderate
Oct20Moderate
Nov17Moderate
Dec19Moderate
Location & terrain

Where is Fasā?

Fasā sits at 28.9°N, 53.6°E, 1,366 m above sea level, in Iran. The nearest listed city is Estahbān, 44 km away.

Topography around Fasā

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

Within 3 km, the terrain around Fasā has only modest variations in elevation — a maximum elevation change of 81 m around an average of 1,370 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,180 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,504 m.

The land around Fasā is covered by artificial surfaces (39%), cropland (35%) and bare terrain (20%) within 3 km, bare terrain (59%) and grassland (22%) within 16 km, and bare terrain (64%) within 80 km.

3 km
81 m
16 km
1,180 m
80 km
2,504 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Estahbān 44 km · Ābādeh 48 km · Jahrom 49 km · Sarvestān 56 km · Neyrīz 72 km · Qīr 78 km · Dārāb 89 km · Kavār 98 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 Fasā (28.9383°, 53.6482°, elevation 1,366 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. 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).