Bostānābād weather in September

In September, Bostānābād sees average daytime highs of 23°C and overnight lows near 9°C, with 33 mm of rain across 5.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 20°C by the end. The sky is clear or mostly clear about 79% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Bostānābād's 1st-clearest and 11th-windiest month. For the whole year in context, see Bostānābād's year-round climate.

Daytime high: 23°; 4th warmest
Overnight low: 9°; 9th coldest
Rainfall: 33 mm; 5.9 wet days
Daylight: 12 h 12 min; 6:10 AM – 6:24 PM
Cloud cover: 23%; 1st clearest
Wind: 8 km/h; 11th windiest
Solar energy: 5.75 kWh/m²
Travel score: 8.0; out of 10

Bostānābād is city in East Azerbaijan Province, Iran.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Bostānābād year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 20°C by the end.

A typical September day in Bostānābād reaches about 23°C in the afternoon and slips back to 9°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°C. Set against its neighbours, September runs about 4°C cooler than August and about 7°C warmer than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	26	26	26	26	26	25	25	25	25	25	24	24	24	24	24	23	23	23	23	23	22	22	22	22	21	21	21	21	20	20
Avg low (°C)	11	11	11	11	10	10	10	10	10	10	9	9	9	9	9	9	8	8	8	8	8	8	7	7	7	7	7	6	6	6

	Avg high (°C)	Avg low (°C)
1	26	11
2	26	11
3	26	11
4	26	11
5	26	10
6	25	10
7	25	10
8	25	10
9	25	10
10	25	10
11	24	9
12	24	9
13	24	9
14	24	9
15	24	9
16	23	9
17	23	8
18	23	8
19	23	8
20	23	8
21	22	8
22	22	8
23	22	7
24	22	7
25	21	7
26	21	7
27	21	7
28	21	6
29	20	6
30	20	6

How September really feels in Bostānābād

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Bostānābād 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-1° / -10°	46	8.4	9	9.7	0.0
Feb	1° / -9°	59	9.4	9.7	10.5	0.0
Mar	6° / -4°	85	13	10.2	11.7	0.4
Apr	12° / 1°	121	16.3	4.3	12.9	2.8
May	18° / 6°	132	19	0.3	14	4.8
Jun	24° / 10°	65	11.4	0	14.6	7.1
Jul	27° / 13°	38	6.7	0	14.4	7.4
Aug	28° / 13°	25	4.8	0	13.5	7.6
Sep	23° / 9°	33	5.9	0	12.3	8.0
Oct	16° / 4°	67	9.9	0.7	11	5.4
Nov	7° / -2°	61	8.7	5.4	10	1.2
Dec	1° / -8°	46	8.1	8	9.4	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 79% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 9%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	94	94	94	94	93	93	93	93	93	93	93	93	92	92	92	92	92	92	92	92	91	91	91	89	89	89	88	87	86	85
Cloudier (%)	6	6	6	6	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	9	9	9	11	11	11	12	13	14	15

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	93	7
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	91	9
22	91	9
23	91	9
24	89	11
25	89	11
26	89	11
27	88	12
28	87	13
29	86	14
30	85	15

Chance of precipitation in September

Any precipitation

Bostānābād gets around 33 mm of rain over 5.9 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 21% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	17	17	17	17	17	17	17	17	18	18	19	19	20	20	20	21	21	21	22	22	22	23	23	23	24	24	24	25	25	26

	Rain chance (%)
1	17
2	17
3	17
4	17
5	17
6	17
7	17
8	17
9	18
10	18
11	19
12	19
13	20
14	20
15	20
16	21
17	21
18	21
19	22
20	22
21	22
22	23
23	23
24	23
25	24
26	24
27	24
28	25
29	25
30	26

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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in September

Winds average 8 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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 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 72 minutes over September. Sunrise moves from 5:57 AM to 6:22 AM, and sunset from 6:48 PM to 6:02 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.9	12.8	12.8	12.7	12.7	12.7	12.6	12.6	12.5	12.5	12.4	12.4	12.4	12.3	12.3	12.2	12.2	12.2	12.1	12.1	12.0	12.0	11.9	11.9	11.9	11.8	11.8	11.7	11.7	11.7
Sunrise (AM)	5:57	5:58	5:58	5:59	6:00	6:01	6:02	6:03	6:04	6:05	6:05	6:06	6:07	6:08	6:09	6:10	6:11	6:12	6:12	6:13	6:14	6:15	6:16	6:17	6:18	6:19	6:20	6:20	6:21	6:22
Sunset (PM)	6:48	6:47	6:45	6:43	6:42	6:40	6:39	6:37	6:35	6:34	6:32	6:31	6:29	6:27	6:26	6:24	6:23	6:21	6:19	6:18	6:16	6:14	6:13	6:11	6:10	6:08	6:06	6:05	6:03	6:02

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.9	5:57	6:48
2	12.8	5:58	6:47
3	12.8	5:58	6:45
4	12.7	5:59	6:43
5	12.7	6:00	6:42
6	12.7	6:01	6:40
7	12.6	6:02	6:39
8	12.6	6:03	6:37
9	12.5	6:04	6:35
10	12.5	6:05	6:34
11	12.4	6:05	6:32
12	12.4	6:06	6:31
13	12.4	6:07	6:29
14	12.3	6:08	6:27
15	12.3	6:09	6:26
16	12.2	6:10	6:24
17	12.2	6:11	6:23
18	12.2	6:12	6:21
19	12.1	6:12	6:19
20	12.1	6:13	6:18
21	12.0	6:14	6:16
22	12.0	6:15	6:14
23	11.9	6:16	6:13
24	11.9	6:17	6:11
25	11.9	6:18	6:10
26	11.8	6:19	6:08
27	11.8	6:20	6:06
28	11.7	6:20	6:05
29	11.7	6:21	6:03
30	11.7	6:22	6:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.75 kWh/m².

For context, solar energy here swings from a low near 2.64 kWh/m² to a high of 7.7 kWh/m² in June across the year — September's 5.75 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	6.5	6.4	6.4	6.3	6.3	6.2	6.2	6.1	6.1	6.0	6.0	5.9	5.9	5.8	5.8	5.7	5.7	5.6	5.6	5.5	5.5	5.4	5.4	5.3	5.3	5.2	5.2	5.1	5.1	5.0
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	6.5	Intense
2	6.4	Intense
3	6.4	Intense
4	6.3	Intense
5	6.3	Intense
6	6.2	Intense
7	6.2	Intense
8	6.1	Intense
9	6.1	Intense
10	6.0	Intense
11	6.0	Bright
12	5.9	Bright
13	5.9	Bright
14	5.8	Bright
15	5.8	Bright
16	5.7	Bright
17	5.7	Bright
18	5.6	Bright
19	5.6	Bright
20	5.5	Bright
21	5.5	Bright
22	5.4	Bright
23	5.4	Bright
24	5.3	Bright
25	5.3	Bright
26	5.2	Bright
27	5.2	Bright
28	5.1	Bright
29	5.1	Bright
30	5.0	Bright

Planning a trip in September

Hazard calendar for Bostānābād

In seasonPeak

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

Bostānābād's rainy season runs March–June, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Bostānābād?

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

8.0

Sightseeing

1st-best month of the year

6.2

Beach & pool

3rd-best month of the year

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

What to pack for Bostānābād in September

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

In September, Bostānābād sees daytime highs around 23°C and nights near 9°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Bostānābād 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 Bostānābād peaks around July 15 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	4	4	7	9	11	11	11	8	5	3	3
Level	Moderate	Moderate	Moderate	High	Very high	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	4	Moderate
Mar	4	Moderate
Apr	7	High
May	9	Very high
Jun	11	Extreme
Jul	11	Extreme
Aug	11	Extreme
Sep	8	Very high
Oct	5	High
Nov	3	Moderate
Dec	3	Moderate

Air quality in Bostānābād 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 Bostānābād is worst in May — around 32 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	22	24	29	32	32	24	22	20	21	24	21	21
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	22	Moderate
Feb	24	Moderate
Mar	29	Moderate
Apr	32	Moderate
May	32	Moderate
Jun	24	Moderate
Jul	22	Moderate
Aug	20	Moderate
Sep	21	Moderate
Oct	24	Moderate
Nov	21	Moderate
Dec	21	Moderate

Location & terrain

Where is Bostānābād?

Bostānābād sits at 37.8°N, 46.8°E, 1,725 m above sea level, in Iran. The nearest listed city is Hashtrūd, 45 km away.

Topography around Bostānābād

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

Within 3 km, the terrain around Bostānābād has significant variations in elevation — a maximum elevation change of 306 m around an average of 1,793 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 848 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,736 m.

The land around Bostānābād is covered by grassland (51%) and cropland (26%) within 3 km, grassland (50%) and cropland (36%) within 16 km, and grassland (57%) and cropland (32%) within 80 km.

3 km

306 m

grassland 51%

16 km

848 m

grassland 50%

80 km

2,736 m

grassland 57%

treesgrasslandcroplandartificial surfacesbare terrain

← August Bostānābād year-round climate October →Best places to visit in September

September weather nearby: Hashtrūd 45 km · Tabriz 54 km · Sarāb 62 km · Oskū 63 km · Sardrūd 64 km · Sahand 65 km · Khosrowshahr 70 km · Marāgheh 73 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

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 Bostānābād (37.8463°, 46.8354°, elevation 1,725 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).

	Avg high (°C)	Avg low (°C)
1	26	11
2	26	11
3	26	11
4	26	11
5	26	10
6	25	10
7	25	10
8	25	10
9	25	10
10	25	10
11	24	9
12	24	9
13	24	9
14	24	9
15	24	9
16	23	9
17	23	8
18	23	8
19	23	8
20	23	8
21	22	8
22	22	8
23	22	7
24	22	7
25	21	7
26	21	7
27	21	7
28	21	6
29	20	6
30	20	6

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	93	7
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	91	9
22	91	9
23	91	9
24	89	11
25	89	11
26	89	11
27	88	12
28	87	13
29	86	14
30	85	15

	Rain chance (%)
1	17
2	17
3	17
4	17
5	17
6	17
7	17
8	17
9	18
10	18
11	19
12	19
13	20
14	20
15	20
16	21
17	21
18	21
19	22
20	22
21	22
22	23
23	23
24	23
25	24
26	24
27	24
28	25
29	25
30	26

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	26	11
2	26	11
3	26	11
4	26	11
5	26	10
6	25	10
7	25	10
8	25	10
9	25	10
10	25	10
11	24	9
12	24	9
13	24	9
14	24	9
15	24	9
16	23	9
17	23	8
18	23	8
19	23	8
20	23	8
21	22	8
22	22	8
23	22	7
24	22	7
25	21	7
26	21	7
27	21	7
28	21	6
29	20	6
30	20	6

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	93	7
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	91	9
22	91	9
23	91	9
24	89	11
25	89	11
26	89	11
27	88	12
28	87	13
29	86	14
30	85	15

	Rain chance (%)
1	17
2	17
3	17
4	17
5	17
6	17
7	17
8	17
9	18
10	18
11	19
12	19
13	20
14	20
15	20
16	21
17	21
18	21
19	22
20	22
21	22
22	23
23	23
24	23
25	24
26	24
27	24
28	25
29	25
30	26

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	26	11
2	26	11
3	26	11
4	26	11
5	26	10
6	25	10
7	25	10
8	25	10
9	25	10
10	25	10
11	24	9
12	24	9
13	24	9
14	24	9
15	24	9
16	23	9
17	23	8
18	23	8
19	23	8
20	23	8
21	22	8
22	22	8
23	22	7
24	22	7
25	21	7
26	21	7
27	21	7
28	21	6
29	20	6
30	20	6

	Clearer (%)	Cloudier (%)
1	94	6
2	94	6
3	94	6
4	94	6
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	93	7
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	91	9
22	91	9
23	91	9
24	89	11
25	89	11
26	89	11
27	88	12
28	87	13
29	86	14
30	85	15

	Rain chance (%)
1	17
2	17
3	17
4	17
5	17
6	17
7	17
8	17
9	18
10	18
11	19
12	19
13	20
14	20
15	20
16	21
17	21
18	21
19	22
20	22
21	22
22	23
23	23
24	23
25	24
26	24
27	24
28	25
29	25
30	26

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100