Bīrjand weather in September

In September, Bīrjand sees average daytime highs of 29°C and overnight lows near 13°C, with 1 mm of rain across 0.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 9th-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 98% 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 Bīrjand's 2nd-clearest and 4th-windiest month. For the whole year in context, see Bīrjand's year-round climate.

Daytime high: 29°; 4th warmest
Overnight low: 13°; 8th coldest
Rainfall: 1 mm; 0.2 wet days
Daylight: 12 h 12 min; 5:21 AM – 5:33 PM
Cloud cover: 3%; 2nd clearest
Wind: 11 km/h; 4th windiest
Solar energy: 6.49 kWh/m²
Travel score: 7.9; out of 10

Bīrjand is city in South Khorasan province, Iran.

Air quality: Moderate; PM2.5 12.1 µg/m³ · 2020
Density: 4,602/km²; people per km²
Founded: 1201

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

← August Bīrjand 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 30°C in the first days to 27°C by the end.

A typical September day in Bīrjand reaches about 29°C in the afternoon and slips back to 13°C overnight — a 16°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°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)	30	30	30	30	30	30	30	30	30	30	29	29	29	29	29	29	29	29	29	28	28	28	28	28	28	28	27	27	27	27
Avg low (°C)	15	15	15	15	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12

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

How September really feels in Bīrjand

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.

Bīrjand weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	8° / -3°	37	6.8	2.7	10.1	1.8
Feb	11° / -1°	45	7.6	1.7	10.8	2.8
Mar	16° / 4°	45	8	0.6	11.8	5.3
Apr	22° / 9°	20	4.8	0	12.8	7.7
May	28° / 14°	6	1.7	0	13.7	7.7
Jun	32° / 18°	1	0.2	0	14.1	5.5
Jul	33° / 19°	0	0	0	13.9	5.1
Aug	31° / 17°	0	0.1	0	13.2	6.1
Sep	29° / 13°	1	0.2	0	12.2	7.9
Oct	23° / 9°	3	0.7	0	11.2	9.2
Nov	16° / 3°	10	2.8	0.1	10.3	6.4
Dec	11° / -1°	22	4.6	0.7	9.9	3.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 98% 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 0%.

	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 (%)	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
Cloudier (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Clearer (%)	Cloudier (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

Chance of precipitation in September

Any precipitation

Bīrjand 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 2% on the wettest days.

	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 (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	2

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	2
25	2
26	2
27	2
28	2
29	2
30	2

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 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 13 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)	13	13	13	13	13	13	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	11	10	10	10	10	10
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	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	13	light breeze
2	13	light breeze
3	13	light breeze
4	13	light breeze
5	13	light breeze
6	13	light breeze
7	12	light breeze
8	12	light breeze
9	12	light breeze
10	12	light breeze
11	12	calm
12	12	calm
13	12	calm
14	12	calm
15	12	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	11	calm
24	11	calm
25	11	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm

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 5:11 AM to 5:31 AM, and sunset from 5:54 PM to 5:14 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)	12.7	12.7	12.6	12.6	12.6	12.5	12.5	12.5	12.4	12.4	12.4	12.3	12.3	12.3	12.2	12.2	12.2	12.1	12.1	12.1	12.0	12.0	12.0	11.9	11.9	11.9	11.8	11.8	11.7	11.7
Sunrise (AM)	5:11	5:12	5:13	5:13	5:14	5:15	5:15	5:16	5:17	5:17	5:18	5:19	5:19	5:20	5:21	5:21	5:22	5:23	5:23	5:24	5:25	5:25	5:26	5:27	5:28	5:28	5:29	5:30	5:30	5:31
Sunset (PM)	5:54	5:53	5:51	5:50	5:49	5:47	5:46	5:45	5:43	5:42	5:40	5:39	5:38	5:36	5:35	5:33	5:32	5:31	5:29	5:28	5:26	5:25	5:24	5:22	5:21	5:19	5:18	5:17	5:15	5:14

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.7	5:11	5:54
2	12.7	5:12	5:53
3	12.6	5:13	5:51
4	12.6	5:13	5:50
5	12.6	5:14	5:49
6	12.5	5:15	5:47
7	12.5	5:15	5:46
8	12.5	5:16	5:45
9	12.4	5:17	5:43
10	12.4	5:17	5:42
11	12.4	5:18	5:40
12	12.3	5:19	5:39
13	12.3	5:19	5:38
14	12.3	5:20	5:36
15	12.2	5:21	5:35
16	12.2	5:21	5:33
17	12.2	5:22	5:32
18	12.1	5:23	5:31
19	12.1	5:23	5:29
20	12.1	5:24	5:28
21	12.0	5:25	5:26
22	12.0	5:25	5:25
23	12.0	5:26	5:24
24	11.9	5:27	5:22
25	11.9	5:28	5:21
26	11.9	5:28	5:19
27	11.8	5:29	5:18
28	11.8	5:30	5:17
29	11.7	5:30	5:15
30	11.7	5:31	5:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.49 kWh/m².

For context, solar energy here swings from a low near 3.33 kWh/m² to a high of 8.1 kWh/m² in June across the year — September's 6.49 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)	7.1	7.0	7.0	7.0	6.9	6.9	6.8	6.8	6.8	6.7	6.7	6.6	6.6	6.5	6.5	6.5	6.4	6.4	6.3	6.3	6.2	6.2	6.2	6.1	6.1	6.0	6.0	6.0	5.9	5.9
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	7.1	Intense
2	7.0	Intense
3	7.0	Intense
4	7.0	Intense
5	6.9	Intense
6	6.9	Intense
7	6.8	Intense
8	6.8	Intense
9	6.8	Intense
10	6.7	Intense
11	6.7	Intense
12	6.6	Intense
13	6.6	Intense
14	6.5	Intense
15	6.5	Intense
16	6.5	Intense
17	6.4	Intense
18	6.4	Intense
19	6.3	Intense
20	6.3	Intense
21	6.2	Intense
22	6.2	Intense
23	6.2	Intense
24	6.1	Intense
25	6.1	Intense
26	6.0	Intense
27	6.0	Bright
28	6.0	Bright
29	5.9	Bright
30	5.9	Bright

Planning a trip in September

Is September a good time to visit Bīrjand?

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

7.9

Sightseeing

2nd-best month of the year

9.4

Beach & pool

1st-best month of the year

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

What to pack for Bīrjand in September

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

In September, Bīrjand sees daytime highs around 29°C and nights near 13°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Bīrjand 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 Bīrjand peaks around July 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	6	7	8	10	10	12	11	8	7	4	3
Level	Moderate	High	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	6	High
Mar	7	Very high
Apr	8	Very high
May	10	Extreme
Jun	10	Extreme
Jul	12	Extreme
Aug	11	Extreme
Sep	8	Very high
Oct	7	High
Nov	4	Moderate
Dec	3	Moderate

Air quality in Bīrjand 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 Bīrjand is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Bīrjand's WHO annual average of 12.1 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	7	10	12	16	16	14	18	14	14	10	7	7
Level	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	7	Good
Feb	10	Good
Mar	12	Good
Apr	16	Moderate
May	16	Moderate
Jun	14	Moderate
Jul	18	Moderate
Aug	14	Moderate
Sep	14	Moderate
Oct	10	Good
Nov	7	Good
Dec	7	Good

Location & terrain

Where is Bīrjand?

Bīrjand sits at 32.9°N, 59.2°E, 1,459 m above sea level, in Iran. The nearest listed city is Qā’en, 96 km away.

Topography around Bīrjand

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

Within 3 km, the terrain around Bīrjand has only modest variations in elevation — a maximum elevation change of 119 m around an average of 1,483 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,205 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,742 m.

The land around Bīrjand is covered by artificial surfaces (63%) and bare terrain (33%) within 3 km, bare terrain (89%) within 16 km, and bare terrain (97%) within 80 km.

3 km

119 m

artificial surfaces 63%

16 km

1,205 m

bare terrain 89%

80 km

1,742 m

bare terrain 97%

treesgrasslandcroplandartificial surfacesbare terrain

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

September weather nearby: Qā’en 96 km · Ferdows 161 km · Nehbandān 166 km · Gonābād 173 km · Boshrūyeh 200 km · Khvāf 208 km · Tabas 228 km · Tāybād 253 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 Bīrjand (32.8663°, 59.2211°, elevation 1,459 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	30	15
2	30	15
3	30	15
4	30	15
5	30	14
6	30	14
7	30	14
8	30	14
9	30	14
10	30	14
11	29	14
12	29	13
13	29	13
14	29	13
15	29	13
16	29	13
17	29	13
18	29	13
19	29	13
20	28	13
21	28	13
22	28	12
23	28	12
24	28	12
25	28	12
26	28	12
27	27	12
28	27	12
29	27	12
30	27	12

	Clearer (%)	Cloudier (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	2
25	2
26	2
27	2
28	2
29	2
30	2

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

	Clearer (%)	Cloudier (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	2
25	2
26	2
27	2
28	2
29	2
30	2

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

	Clearer (%)	Cloudier (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Rain chance (%)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	1
22	1
23	1
24	2
25	2
26	2
27	2
28	2
29	2
30	2

	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