Naţanz weather in September

In September, Naţanz sees average daytime highs of 31°C and overnight lows near 19°C, with 1 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 94% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Naţanz's 1st-clearest and 7th-windiest month. For the whole year in context, see Naţanz's year-round climate.

Daytime high
31°
4th warmest
Overnight low
19°
9th coldest
Rainfall
1 mm
0.1 wet days
Daylight
12 h 12 min
5:51 AM – 6:03 PM
Cloud cover
9%
1st clearest
Wind
7 km/h
7th windiest
Solar energy
6.32 kWh/m²
Travel score
6.0
out of 10

Naţanz is city in Isfahan 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 Naţanz reaches about 31°C in the afternoon and slips back to 19°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 35°C. Set against its neighbours, September runs about 4°C cooler than August and about 7°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13421
23321
33321
43320
53320
63320
73320
83320
93220
103220
113219
123219
133219
143219
153219
163119
173118
183118
193118
203118
213118
223018
233017
243017
253017
262917
272917
282917
292916
302916

How September really feels in Naţanz

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.

Naţanz 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
Jan / -0°245.23.3102.2
Feb12° / 214.91.610.83.8
Mar17° / 316.91.111.76.1
Apr23° / 12°297.40.112.87.3
May28° / 17°174.9013.76.8
Jun34° / 22°20.5014.24.2
Jul36° / 24°10.20142.8
Aug35° / 23°00013.23.5
Sep31° / 19°10.1012.26.0
Oct25° / 13°92.7011.28.5
Nov16° / 224.80.610.35.8
Dec11° / 194.91.79.83.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 94% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 1%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
20991
21991
22991
23991
24982
25982
26973
27973
28973
29973
30964

Chance of precipitation in September

Any precipitation

Naţanz gets around 1 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 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
141
151
161
171
181
191
201
211
221
231
241
251
261
271
282
292
302

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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:40 AM to 6:00 AM, and sunset from 6:24 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:406:24
212.75:416:23
312.75:426:21
412.65:426:20
512.65:436:18
612.65:446:17
712.55:446:16
812.55:456:14
912.55:466:13
1012.45:466:11
1112.45:476:10
1212.35:486:09
1312.35:486:07
1412.35:496:06
1512.25:506:04
1612.25:516:03
1712.25:516:01
1812.15:526:00
1912.15:535:58
2012.15:535:57
2112.05:545:56
2212.05:555:54
2312.05:555:53
2411.95:565:51
2511.95:575:50
2611.85:585:48
2711.85:585:47
2811.85:595:46
2911.76:005:44
3011.76:005:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.32 kWh/m².

For context, solar energy here swings from a low near 3.13 kWh/m² to a high of 7.92 kWh/m² in June across the year — September's 6.32 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.9Intense
26.8Intense
36.8Intense
46.8Intense
56.7Intense
66.7Intense
76.7Intense
86.6Intense
96.6Intense
106.5Intense
116.5Intense
126.5Intense
136.4Intense
146.4Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.0Intense
236.0Intense
246.0Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Naţanz

In seasonPeak

None of Naţanz's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Naţanz sees seasonal dust haze (July), heaviest in July.

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

Is September a good time to visit Naţanz?

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

6.0
Sightseeing
5th-best month of the year
8.9
Beach & pool
1st-best month of the year

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

What to pack for Naţanz in September

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

In September, Naţanz sees daytime highs around 31°C and nights near 19°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Naţanz in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Naţanz peaks around July 17 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 13 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 17UV 11Jan 13UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May10Very high
Jun10Very high
Jul11Extreme
Aug10Very high
Sep8Very high
Oct7High
Nov4Moderate
Dec4Moderate

Air quality in Naţanz 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 Naţanz is worst in April — around 38 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 2038 µg/m³Nov 2124 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb30Moderate
Mar33Moderate
Apr38Poor
May37Poor
Jun29Moderate
Jul35Moderate
Aug26Moderate
Sep29Moderate
Oct26Moderate
Nov24Moderate
Dec25Moderate
Location & terrain

Where is Naţanz?

Naţanz sits at 33.5°N, 51.9°E, 1,637 m above sea level, in Iran. The nearest listed city is Ardestān, 44 km away.

Topography around Naţanz

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

Within 3 km, the terrain around Naţanz has large variations in elevation — a maximum elevation change of 663 m around an average of 1,696 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,830 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,009 m.

The land around Naţanz is covered by bare terrain (64%) within 3 km, bare terrain (87%) within 16 km, and bare terrain (94%) within 80 km.

3 km
663 m
16 km
2,830 m
80 km
3,009 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Ardestān 44 km · Kashan 69 km · Ārān Bīdgol 73 km · Shāhīn Shahr 80 km · Dowlatābād 82 km · Dastgerd 82 km · Gaz-e Borkhar 83 km · Khowrzūq 85 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 Naţanz (33.5112°, 51.9181°, elevation 1,637 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).