Tatvan weather in September

In September, Tatvan sees average daytime highs of 24°C and overnight lows near 13°C, with 14 mm of rain across 2.7 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 21°C by the end. The sky is clear or mostly clear about 87% 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 36 min by month's end. Set against the rest of the year, September is Tatvan's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Tatvan's year-round climate.

Daytime high: 24°; 3rd warmest
Overnight low: 13°; 10th coldest
Rainfall: 14 mm; 2.7 wet days
Daylight: 12 h 12 min; 4:58 AM – 5:13 PM
Cloud cover: 16%; 3rd clearest
Wind: 8 km/h; 3rd windiest
Solar energy: 5.79 kWh/m²
Travel score: 8.7; out of 10

Tatvan is district and town in Bitlis, Turkey.

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

← August Tatvan 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 21°C by the end.

A typical September day in Tatvan reaches about 24°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, September runs about 5°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)	27	26	26	26	26	26	26	25	25	25	25	25	24	24	24	24	23	23	23	23	22	22	22	22	21	21	21	21	20	20
Avg low (°C)	15	15	15	15	15	15	14	14	14	14	14	14	13	13	13	13	13	13	12	12	12	12	12	11	11	11	11	11	10	10

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

How September really feels in Tatvan

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.

Tatvan weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 10th-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° / -6°	96	11.5	12.1	9.6	0.0
Feb	1° / -5°	102	11.3	11.1	10.5	0.0
Mar	5° / -2°	122	14.2	11	11.7	0.2
Apr	11° / 3°	118	16	3.9	13	2.2
May	17° / 8°	84	14.9	0.1	14.1	5.0
Jun	23° / 13°	23	5.4	0	14.6	8.1
Jul	28° / 16°	8	2.3	0	14.4	8.0
Aug	28° / 17°	5	1.2	0	13.5	7.9
Sep	24° / 13°	14	2.7	0	12.3	8.7
Oct	16° / 8°	58	8.2	0.3	11	5.8
Nov	8° / 1°	73	8.7	3.9	9.9	1.5
Dec	2° / -4°	95	10.8	10.2	9.4	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 87% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 5%. 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 (%)	99	99	99	99	99	99	99	99	97	97	97	97	97	97	97	96	96	95	95	94	94	94	93	92	92	91	91	91	89	89
Cloudier (%)	1	1	1	1	1	1	1	1	3	3	3	3	3	3	3	4	4	5	5	6	6	6	7	8	8	9	9	9	11	11

	Clearer (%)	Cloudier (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	96	4
17	96	4
18	95	5
19	95	5
20	94	6
21	94	6
22	94	6
23	93	7
24	92	8
25	92	8
26	91	9
27	91	9
28	91	9
29	89	11
30	89	11

Chance of precipitation in September

Any precipitation

Tatvan gets around 14 mm of rain over 2.7 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 10% and peaks near 17% 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 (%)	4	4	4	4	4	5	5	5	6	6	7	7	8	8	9	10	10	11	11	12	12	13	14	14	15	16	16	17	17	17

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

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 7 km/h on the calmest days to 8 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)	8	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
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	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	7	calm
22	7	calm
23	7	calm
24	7	calm
25	7	calm
26	7	calm
27	7	calm
28	7	calm
29	7	calm
30	7	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 4:44 AM to 5:11 AM, and sunset from 5:37 PM to 4:50 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	12.8	12.7	12.7	12.6	12.6	12.5	12.5	12.5	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	11.6
Sunrise (AM)	4:44	4:45	4:46	4:47	4:48	4:49	4:50	4:51	4:51	4:52	4:53	4:54	4:55	4:56	4:57	4:58	4:59	5:00	5:01	5:01	5:02	5:03	5:04	5:05	5:06	5:07	5:08	5:09	5:10	5:11
Sunset (PM)	5:37	5:35	5:34	5:32	5:31	5:29	5:27	5:26	5:24	5:22	5:21	5:19	5:18	5:16	5:14	5:13	5:11	5:09	5:08	5:06	5:04	5:03	5:01	4:59	4:58	4:56	4:54	4:53	4:51	4:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.9	4:44	5:37
2	12.8	4:45	5:35
3	12.8	4:46	5:34
4	12.8	4:47	5:32
5	12.7	4:48	5:31
6	12.7	4:49	5:29
7	12.6	4:50	5:27
8	12.6	4:51	5:26
9	12.5	4:51	5:24
10	12.5	4:52	5:22
11	12.5	4:53	5:21
12	12.4	4:54	5:19
13	12.4	4:55	5:18
14	12.3	4:56	5:16
15	12.3	4:57	5:14
16	12.2	4:58	5:13
17	12.2	4:59	5:11
18	12.2	5:00	5:09
19	12.1	5:01	5:08
20	12.1	5:01	5:06
21	12.0	5:02	5:04
22	12.0	5:03	5:03
23	11.9	5:04	5:01
24	11.9	5:05	4:59
25	11.9	5:06	4:58
26	11.8	5:07	4:56
27	11.8	5:08	4:54
28	11.7	5:09	4:53
29	11.7	5:10	4:51
30	11.6	5:11	4:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.79 kWh/m².

For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 7.72 kWh/m² in June across the year — September's 5.79 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	6.5	6.5	6.4	6.4	6.3	6.3	6.2	6.2	6.1	6.0	6.0	5.9	5.9	5.8	5.8	5.7	5.6	5.6	5.5	5.5	5.4	5.3	5.3	5.2	5.2	5.1	5.1	5.0	5.0
Level	Intense	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

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

Planning a trip in September

Hazard calendar for Tatvan

In seasonPeak

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

Tatvan's rainy season runs October–May, 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 Tatvan?

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

8.7

Sightseeing

1st-best month of the year

6.9

Beach & pool

3rd-best month of the year

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

What to pack for Tatvan in September

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

In September, Tatvan sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes and sun protection.

light clothessun protection

UV index in Tatvan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tatvan peaks around June 21 at about 11 (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 — in 10 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	4	5	7	9	11	10	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	5	Moderate
Apr	7	High
May	9	Very high
Jun	11	Extreme
Jul	10	Extreme
Aug	11	Extreme
Sep	8	Very high
Oct	5	High
Nov	3	Moderate
Dec	3	Moderate

Air quality in Tatvan 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 Tatvan is worst in May — around 26 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 16 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	17	20	24	25	26	20	17	17	17	21	16	16
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	17	Moderate
Feb	20	Moderate
Mar	24	Moderate
Apr	25	Moderate
May	26	Moderate
Jun	20	Moderate
Jul	17	Moderate
Aug	17	Moderate
Sep	17	Moderate
Oct	21	Moderate
Nov	16	Moderate
Dec	16	Moderate

Location & terrain

Where is Tatvan?

Tatvan sits at 38.5°N, 42.3°E, 1,682 m above sea level, in Turkey. The nearest listed city is Bitlis, 18 km away.

Topography around Tatvan

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

Within 3 km, the terrain around Tatvan has significant variations in elevation — a maximum elevation change of 560 m around an average of 1,762 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,394 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,566 m.

The land around Tatvan is covered by grassland (35%), water (24%) and trees (22%) within 3 km, grassland (60%) within 16 km, and grassland (61%) within 80 km.

3 km

560 m

grassland 35%

16 km

1,394 m

grassland 60%

80 km

3,566 m

grassland 61%

treesgrasslandcroplandartificial surfacesbare terrainwater

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

September weather nearby: Bitlis 18 km · Güroymak 25 km · Hizan 32 km · Ahlat 33 km · Adilcevaz 52 km · Bulanık 66 km · Siirt 69 km · Muş 74 km

Turkey travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / F; 230 V · 50 Hz
Prices: ≈ 41% of US; price level, 2025
GDP per capita: $18,599; 2025
Happiness: 5.3 / 10; World Happiness, 2025
Homicide rate: 3.2; per 100k, 2023
Road deaths: 6.7; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Low; EF EPI 488
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 Tatvan (38.4922°, 42.2827°, elevation 1,682 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	27	15
2	26	15
3	26	15
4	26	15
5	26	15
6	26	15
7	26	14
8	25	14
9	25	14
10	25	14
11	25	14
12	25	14
13	24	13
14	24	13
15	24	13
16	24	13
17	23	13
18	23	13
19	23	12
20	23	12
21	22	12
22	22	12
23	22	12
24	22	11
25	21	11
26	21	11
27	21	11
28	21	11
29	20	10
30	20	10

	Clearer (%)	Cloudier (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	96	4
17	96	4
18	95	5
19	95	5
20	94	6
21	94	6
22	94	6
23	93	7
24	92	8
25	92	8
26	91	9
27	91	9
28	91	9
29	89	11
30	89	11

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

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

	Clearer (%)	Cloudier (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	96	4
17	96	4
18	95	5
19	95	5
20	94	6
21	94	6
22	94	6
23	93	7
24	92	8
25	92	8
26	91	9
27	91	9
28	91	9
29	89	11
30	89	11

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

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

	Clearer (%)	Cloudier (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	97	3
10	97	3
11	97	3
12	97	3
13	97	3
14	97	3
15	97	3
16	96	4
17	96	4
18	95	5
19	95	5
20	94	6
21	94	6
22	94	6
23	93	7
24	92	8
25	92	8
26	91	9
27	91	9
28	91	9
29	89	11
30	89	11

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

	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