Varāmīn weather in September

In September, Varāmīn sees average daytime highs of 34°C and overnight lows near 20°C, with 1 mm of rain across 0.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 37°C in the first days to 32°C by the end. The sky is clear or mostly clear about 97% of the time in September, and the air most often feels dry.

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 Varāmīn's 2nd-clearest and 7th-windiest month. For the whole year in context, see Varāmīn's year-round climate.

Daytime high
34°
4th warmest
Overnight low
20°
9th coldest
Rainfall
1 mm
0.2 wet days
Daylight
12 h 12 min
5:51 AM – 6:04 PM
Cloud cover
5%
2nd clearest
Wind
9 km/h
7th windiest
Solar energy
6.1 kWh/m²
Travel score
4.0
out of 10

Varāmīn is city in Tehran Province, Iran.

Air quality
Very high
PM2.5 36.4 µg/m³ · 2016

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 37°C in the first days to 32°C by the end.

A typical September day in Varāmīn reaches about 34°C in the afternoon and slips back to 20°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 38°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)
13723
23723
33723
43722
53622
63622
73622
83622
93621
103621
113521
123521
133521
143520
153520
163420
173420
183420
193419
203419
213319
223319
233319
243318
253218
263218
273218
283217
293117
303117

How September really feels in Varāmīn

Once humidity and wind are folded in, September averages 26 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
26
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.

Varāmīn weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 235.21.39.92.9
Feb13° / 235.20.710.74.4
Mar19° / 325.70.211.76.9
Apr25° / 13°224.3012.97.9
May31° / 19°91.9013.85.3
Jun38° / 24°20.3014.31.7
Jul40° / 27°10.1014.10.1
Aug39° / 25°10.2013.30.9
Sep34° / 20°10.2012.24.0
Oct27° / 14°81.7011.18.0
Nov18° / 254.30.110.16.6
Dec12° / 2250.39.73.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 97% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 2% of September, with mostly cloudy or overcast conditions the remaining 1%. Skies tend to cloud over as the month goes on.

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
18991
19991
20991
21991
22991
23991
24982
25973
26973
27973
28973
29973
30964

Chance of precipitation in September

Any precipitation

Varāmīn gets around 1 mm of rain over 0.2 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 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
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 (%)
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 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 5:40 AM to 6:02 AM, and sunset from 6:27 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:406:27
212.75:406:25
312.75:416:24
412.75:426:22
512.65:436:21
612.65:446:19
712.65:446:18
812.55:456:16
912.55:466:15
1012.45:476:13
1112.45:476:12
1212.45:486:10
1312.35:496:09
1412.35:506:07
1512.35:506:06
1612.25:516:04
1712.25:526:03
1812.15:536:01
1912.15:536:00
2012.15:545:58
2112.05:555:57
2212.05:565:55
2312.05:575:54
2411.95:575:52
2511.95:585:51
2611.85:595:49
2711.86:005:48
2811.86:015:46
2911.76:015:45
3011.76:025:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.1 kWh/m².

For context, solar energy here swings from a low near 2.76 kWh/m² to a high of 7.96 kWh/m² in June across the year — September's 6.1 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.6Intense
56.6Intense
66.5Intense
76.5Intense
86.4Intense
96.4Intense
106.3Intense
116.3Intense
126.3Intense
136.2Intense
146.2Intense
156.1Intense
166.1Intense
176.0Intense
186.0Bright
195.9Bright
205.9Bright
215.8Bright
225.8Bright
235.8Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Varāmīn?

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

4.0
Sightseeing
7th-best month of the year
7.6
Beach & pool
3rd-best month of the year

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

What to pack for Varāmīn in September

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

In September, Varāmīn sees daytime highs around 34°C and nights near 20°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Varāmīn in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Varāmīn peaks around July 18 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 18UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7High
May9Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Varāmīn 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 Varāmīn is worst in December — around 60 µg/m³ PM2.5 (unhealthy), about 3.5× the cleanest month (July, 17 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Varāmīn's WHO annual average of 36.4 µg/m³.

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyDec 2260 µg/m³Jul 1917 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb51Poor
Mar38Poor
Apr35Poor
May29Moderate
Jun21Moderate
Jul17Moderate
Aug19Moderate
Sep25Moderate
Oct35Moderate
Nov49Poor
Dec60Unhealthy
Location & terrain

Where is Varāmīn?

Varāmīn sits at 35.3°N, 51.6°E, 920 m above sea level, in Iran. The nearest listed city is Pīshvā, 8.0 km away.

Topography around Varāmīn

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

Within 3 km, the terrain around Varāmīn has only modest variations in elevation — a maximum elevation change of 49 m around an average of 918 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 251 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,271 m.

The land around Varāmīn is covered by cropland (45%) and artificial surfaces (36%) within 3 km, cropland (63%) and bare terrain (21%) within 16 km, and bare terrain (62%) within 80 km.

3 km
49 m
16 km
251 m
80 km
4,271 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Pīshvā 8.0 km · Eqbālīyeh 10 km · Qarchak 13 km · Pākdasht 17 km · Mojtame‘-e Maskūnī-ye Nāmjū 18 km · Kahrīzak 18 km · Ferūnābād 21 km · Qīāmdasht 22 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 Varāmīn (35.3242°, 51.6457°, elevation 920 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).