Bojnūrd weather in September

In September, Bojnūrd sees average daytime highs of 27°C and overnight lows near 13°C, with 7 mm of rain across 1.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 25°C by the end. The sky is clear or mostly clear about 88% 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 Bojnūrd's 2nd-clearest and 7th-windiest month. For the whole year in context, see Bojnūrd's year-round climate.

Daytime high
27°
4th warmest
Overnight low
13°
9th coldest
Rainfall
7 mm
1.9 wet days
Daylight
12 h 12 min
5:28 AM – 5:42 PM
Cloud cover
13%
2nd clearest
Wind
7 km/h
7th windiest
Solar energy
5.65 kWh/m²
Travel score
8.3
out of 10

Bojnūrd is city in North Khorasan province, Iran.

Density
5,334/km²
people per km²

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 29°C in the first days to 25°C by the end.

A typical September day in Bojnūrd reaches about 27°C in the afternoon and slips back to 13°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
13015
23015
32915
42915
52915
62915
72915
82915
92914
102814
112814
122814
132814
142814
152814
162713
172713
182713
192713
202713
212613
222612
232612
242612
252512
262512
272511
282511
292411
302411

How September really feels in Bojnūrd

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.

Bojnūrd 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
Jan / -4°356.45.69.70.2
Feb / -3°497.95.310.60.9
Mar12° / 7111.13.411.73.3
Apr18° / 6210.10.512.95.9
May24° / 11°408.10147.4
Jun29° / 15°153.3014.57.0
Jul32° / 18°51.3014.35.6
Aug31° / 17°41013.46.1
Sep27° / 13°71.9012.38.3
Oct21° / 143.30118.1
Nov13° / 295.41.1104.4
Dec / -2°275.63.19.51.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 88% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 6%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1982
2982
3973
4973
5973
6973
7973
8973
9973
10964
11964
12964
13964
14955
15946
16946
17946
18946
19946
20946
21937
22937
23928
24928
25928
26919
279010
289010
299010
309010

Chance of precipitation in September

Any precipitation

Bojnūrd gets around 7 mm of rain over 1.9 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 6% and peaks near 9% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
114
124
135
145
155
165
176
186
197
207
217
228
238
249
259
269
279
289
299
309

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 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
18992
28992
39091
49091
59091
69091
79091
89091
99091
109091
119280
129280
139280
149370
159370
169460
179460
189550
199550
209640
219640
229730
239730
249820
259820
269820
279910
289910
299910
309910

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

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
276calm
286calm
296calm
306calm

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 5:15 AM to 5:40 AM, and sunset from 6:06 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:156:06
212.85:166:04
312.85:176:03
412.75:186:01
512.75:186:00
612.65:195:58
712.65:205:56
812.65:215:55
912.55:225:53
1012.55:235:52
1112.45:245:50
1212.45:245:49
1312.45:255:47
1412.35:265:45
1512.35:275:44
1612.25:285:42
1712.25:295:41
1812.25:305:39
1912.15:305:37
2012.15:315:36
2112.05:325:34
2212.05:335:32
2311.95:345:31
2411.95:355:29
2511.95:365:28
2611.85:375:26
2711.85:385:25
2811.75:385:23
2911.75:395:21
3011.75:405:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.65 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 7.53 kWh/m² in July across the year — September's 5.65 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.3Intense
36.3Intense
46.2Intense
56.2Intense
66.1Intense
76.1Intense
86.0Intense
96.0Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.5Bright
195.5Bright
205.4Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
304.9Bright
Planning a trip in September

Is September a good time to visit Bojnūrd?

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

8.3
Sightseeing
1st-best month of the year
8.6
Beach & pool
2nd-best month of the year

September is one of the better times to visit Bojnūrd for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Bojnūrd in September

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

In September, Bojnūrd sees daytime highs around 27°C and nights near 13°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Bojnūrd in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bojnūrd peaks around July 18 at about 11 (extreme) — 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 highExtremeVery highHighModerateJul 18UV 11Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul11Extreme
Aug9Very high
Sep7High
Oct5High
Nov3Moderate
Dec3Moderate

Air quality in Bojnūrd 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 Bojnūrd is worst in September — around 31 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 17 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1631 µg/m³Dec 2217 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb19Moderate
Mar25Moderate
Apr26Moderate
May27Moderate
Jun25Moderate
Jul27Moderate
Aug26Moderate
Sep31Moderate
Oct25Moderate
Nov20Moderate
Dec17Moderate
Location & terrain

Where is Bojnūrd?

Bojnūrd sits at 37.5°N, 57.3°E, 1,069 m above sea level, in Iran. The nearest listed city is Āshkhāneh, 37 km away.

AbadanJājarmAshgabat

Topography around Bojnūrd

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

Within 3 km, the terrain around Bojnūrd has only modest variations in elevation — a maximum elevation change of 93 m around an average of 1,075 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,032 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,648 m.

The land around Bojnūrd is covered by artificial surfaces (63%) and cropland (26%) within 3 km, grassland (51%) and cropland (26%) within 16 km, and grassland (49%) and bare terrain (31%) within 80 km.

3 km
93 m
16 km
1,032 m
80 km
2,648 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Āshkhāneh 37 km · Esfarāyen 47 km · Shīrvān 54 km · Arkadag 93 km · Gökdepe 94 km · Abadan 100 km · Jājarm 102 km · Ashgabat 107 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 Bojnūrd (37.4747°, 57.329°, elevation 1,069 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).