Bābolsar weather in September

In September, Bābolsar sees average daytime highs of 28°C and overnight lows near 23°C, with 55 mm of rain across 7.4 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 27°C by the end. The sky is clear or mostly clear about 56% 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 Bābolsar's 4th-clearest and 6th-windiest month. For the whole year in context, see Bābolsar's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
23°
10th coldest
Rainfall
55 mm
7.4 wet days
Daylight
12 h 12 min
5:47 AM – 6:01 PM
Cloud cover
38%
4th clearest
Wind
9 km/h
6th windiest
Solar energy
4.43 kWh/m²
Travel score
6.6
out of 10

Bābolsar is city in Mazandaran 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 30°C in the first days to 27°C by the end.

A typical September day in Bābolsar reaches about 28°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53024
62924
72924
82924
92924
102924
112924
122924
132923
142923
152823
162823
172823
182823
192823
202822
212822
222822
232722
242722
252722
262721
272721
282721
292621
302621

How September really feels in Bābolsar

Once humidity and wind are folded in, September averages 8 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
8
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.

Bābolsar weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 607.59.83.6
Feb12° / 527.810.63.5
Mar15° / 538.611.74.6
Apr19° / 13°326.412.96.5
May23° / 18°183.813.97.9
Jun28° / 23°153.414.57.5
Jul30° / 25°183.314.36.1
Aug31° / 26°163.813.45.6
Sep28° / 23°557.412.26.6
Oct24° / 18°74811.17.4
Nov18° / 13°869106.1
Dec14° / 647.69.54.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 29%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17822
27624
37525
47525
57426
67426
77327
87228
97129
107129
117030
127030
137030
147030
156931
166931
176931
186931
196931
206931
217030
226931
236931
246931
256931
267030
276931
286931
296832
306832

Chance of precipitation in September

Any precipitation

Bābolsar gets around 55 mm of rain over 7.4 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 24% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
117
217
318
419
519
620
721
822
922
1023
1124
1224
1325
1425
1525
1625
1726
1826
1926
2026
2126
2226
2327
2427
2527
2627
2728
2828
2928
3028

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1004244428
2004244427
3004254426
4005264425
5005274424
6006284422
7006294421
8007304419
9008314317
10008334316
11009344214
120110354113
130111364012
140112374011
15011238399
16011339388
17021440377
18021541366
19021642355
20031742335
21031843324
22041943313
23051943293
24062043282
25172143262
26182143252
27192243231
28292243221
292102343201
303112343191

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:34 AM to 5:59 AM, and sunset from 6:24 PM to 5:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:346:24
212.85:356:22
312.75:366:21
412.75:376:19
512.75:386:18
612.65:396:16
712.65:396:15
812.55:406:13
912.55:416:12
1012.55:426:10
1112.45:436:08
1212.45:446:07
1312.45:446:05
1412.35:456:04
1512.35:466:02
1612.25:476:01
1712.25:485:59
1812.25:485:57
1912.15:495:56
2012.15:505:54
2112.05:515:53
2212.05:525:51
2311.95:535:50
2411.95:535:48
2511.95:545:47
2611.85:555:45
2711.85:565:43
2811.75:575:42
2911.75:585:40
3011.75:595:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.43 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 6.29 kWh/m² in June across the year — September's 4.43 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.1Bright
274.0Bright
284.0Bright
294.0Moderate
304.0Moderate
Planning a trip in September

Is September a good time to visit Bābolsar?

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
7.6
Beach & pool
4th-best month of the year

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

What to pack for Bābolsar in September

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

In September, Bābolsar sees daytime highs around 28°C and nights near 23°C. Pack light clothes. About 7 days see rain.

light clothes

Sea temperature near Bābolsar in September

The nearest coast averages about 27°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 20 km away) is warmest in August at about 28°C and coldest in February near 11°C.

It's comfortable for a long swim from May 20 to Nov 9 — about 5.7 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar11Bracing
Apr14Bracing
May20Cool
Jun25Warm
Jul27Warm
Aug28Tropical
Sep27Warm
Oct23Refreshing
Nov19Cool
Dec15Cool

UV index in Bābolsar 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 Bābolsar peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May7Very high
Jun7Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Moderate

Air quality in Bābolsar 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 Bābolsar is worst in March — around 41 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (July, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 1141 µg/m³Jul 1719 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb41Poor
Mar41Poor
Apr38Poor
May33Moderate
Jun25Moderate
Jul18Moderate
Aug24Moderate
Sep31Moderate
Oct34Moderate
Nov34Moderate
Dec36Poor
Location & terrain

Where is Bābolsar?

Bābolsar sits at 36.7°N, 52.7°E, -21 m above sea level, in Iran. The nearest listed city is Amīr Kolā, 11 km away.

Topography around Bābolsar

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

Within 3 km, the terrain around Bābolsar has only modest variations in elevation — a maximum elevation change of 12 m around an average of -24 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 33 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,828 m.

The land around Bābolsar is covered by artificial surfaces (41%), cropland (28%) and water (24%) within 3 km, water (47%) and cropland (36%) within 16 km, and water (49%) and trees (26%) within 80 km.

3 km
12 m
16 km
33 m
80 km
3,828 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Amīr Kolā 11 km · Fereydūn Kenār 12 km · Bābol 17 km · Jūybār 24 km · Qā’em Shahr 32 km · Maḩmūdābād 35 km · Āmol 37 km · Sari 40 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 Bābolsar (36.6993°, 52.6501°, elevation -21 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).