Mudanya weather in September

In September, Mudanya sees average daytime highs of 24°C and overnight lows near 18°C, with 53 mm of rain across 6.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 22°C by the end. The sky is clear or mostly clear about 67% of the time in September, and the air most often feels humid.

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 Mudanya's 4th-clearest and 6th-windiest month. For the whole year in context, see Mudanya's year-round climate.

Daytime high
24°
4th warmest
Overnight low
18°
10th coldest
Rainfall
53 mm
6.5 wet days
Daylight
12 h 18 min
5:51 AM – 6:07 PM
Cloud cover
31%
4th clearest
Wind
12 km/h
6th windiest
Solar energy
4.56 kWh/m²
Travel score
8.0
out of 10

Mudanya is district of Bursa, northwestern Turkey.

Density
69/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 26°C in the first days to 22°C by the end.

A typical September day in Mudanya reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°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 3°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12620
22620
32620
42520
52519
62519
72519
82519
92519
102519
112519
122419
132419
142418
152418
162418
172418
182418
192418
202318
212318
222318
232318
242317
252317
262317
272217
282217
292217
302217

Mudanya weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9412.74.49.41.4
Feb / 80123.610.41.7
Mar11° / 8311.51.711.72.7
Apr15° / 619.70.3134.7
May20° / 14°487.5014.26.9
Jun24° / 18°416.7014.87.9
Jul27° / 21°224.1014.68.2
Aug27° / 21°253.2013.68.3
Sep24° / 18°536.5012.38.0
Oct19° / 15°819.3010.96.4
Nov15° / 10°789.60.69.84.4
Dec10° / 10612.73.19.22.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% 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 18%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1928
2928
3919
4919
58911
68911
78911
88812
98812
108713
118713
128515
138515
148416
158317
168317
178119
188020
198020
207822
217822
227624
237624
247525
257426
267327
277228
287228
297228
307129

Chance of precipitation in September

Any precipitation

Mudanya gets around 53 mm of rain over 6.5 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.

0%10%20%30%40%151015202530
Rain chance (%)
116
217
317
417
518
618
718
818
918
1017
1117
1217
1318
1418
1519
1619
1720
1821
1921
2022
2123
2224
2325
2425
2526
2626
2726
2826
2926
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172137332
282237311
392338291
4102438271
5112539251
6112639231
7122740211
8122840191
9132841171
10132942160
11142942150
12142943140
13143043130
14153043120
15153043120
16163043110
17163042110
18173142100
19183141100
20193140100
21203139100
2221323890
2322323790
2423323680
2524333580
2625333480
2726333370
2827343270
2928343170
3029353060

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 5:36 AM to 6:05 AM, and sunset from 6:32 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:366:32
212.95:376:31
312.85:386:29
412.85:396:27
512.85:406:26
612.75:416:24
712.75:426:22
812.65:436:21
912.65:446:19
1012.55:456:17
1112.55:466:15
1212.45:476:14
1312.45:486:12
1412.45:496:10
1512.35:506:08
1612.35:516:07
1712.25:526:05
1812.25:536:03
1912.15:546:01
2012.15:556:00
2112.05:565:58
2212.05:575:56
2311.95:585:54
2411.95:595:53
2511.96:005:51
2611.86:015:49
2711.86:025:48
2811.76:035:46
2911.76:045:44
3011.66:055:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.56 kWh/m².

For context, solar energy here swings from a low near 1.5 kWh/m² to a high of 6.85 kWh/m² in July across the year — September's 4.56 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.1Bright
65.1Bright
75.0Bright
85.0Bright
94.9Bright
104.9Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.5Bright
184.5Bright
194.4Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.1Bright
254.0Bright
264.0Bright
274.0Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Mudanya?

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

8.0
Sightseeing
3rd-best month of the year
6.6
Beach & pool
4th-best month of the year

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

What to pack for Mudanya in September

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

In September, Mudanya sees daytime highs around 24°C and nights near 18°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Mudanya in September

The nearest coast averages about 22°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 24°C and coldest in February near 8°C.

It's comfortable for a long swim from Jun 11 to Oct 6 — about 3.9 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar9Bracing
Apr12Bracing
May16Cool
Jun21Refreshing
Jul23Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Mudanya 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 Mudanya peaks around August 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highModerateLowAug 10UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr8Very high
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Mudanya 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 Mudanya is worst in March — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 2317 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar18Moderate
Apr17Moderate
May17Moderate
Jun13Moderate
Jul11Good
Aug11Good
Sep10Good
Oct11Good
Nov12Good
Dec10Good
Location & terrain

Where is Mudanya?

Mudanya sits at 40.4°N, 28.9°E, 1 m above sea level, in Turkey. The nearest listed city is Görükle, 16 km away.

Topography around Mudanya

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

Within 3 km, the terrain around Mudanya has significant variations in elevation — a maximum elevation change of 283 m around an average of 56 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 599 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,529 m.

The land around Mudanya is covered by water (50%) and trees (35%) within 3 km, water (43%) and trees (35%) within 16 km, and trees (39%) and water (33%) within 80 km.

3 km
283 m
16 km
599 m
80 km
2,529 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Görükle 16 km · Nilüfer 18 km · Gemlik 24 km · Bursa 25 km · Gürsu 32 km · Kestel 34 km · Orhangazi 38 km · Yalova 46 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
Muslim 100%other 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 Mudanya (40.3752°, 28.8838°, elevation 1 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).