Hendek weather in September

In September, Hendek sees average daytime highs of 24°C and overnight lows near 13°C, with 58 mm of rain across 8.7 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 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Hendek's 4th-clearest and 9th-windiest month. For the whole year in context, see Hendek's year-round climate.

Daytime high
24°
4th warmest
Overnight low
13°
9th coldest
Rainfall
58 mm
8.7 wet days
Daylight
12 h 18 min
5:43 AM – 5:59 PM
Cloud cover
43%
4th clearest
Wind
6 km/h
9th windiest
Solar energy
4.61 kWh/m²
Travel score
7.4
out of 10
Air quality
Very high
PM2.5 35.1 µg/m³ · 2019

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 25°C in the first days to 22°C by the end.

A typical September day in Hendek 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 19°C and 29°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)
12615
22515
32514
42514
52514
62514
72514
82514
92514
102413
112413
122413
132413
142413
152413
162413
172413
182413
192313
202312
212312
222312
232312
242312
252312
262212
272211
282211
292211
302211

How September really feels in Hendek

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.

Hendek 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 / -1°9813.68.79.40.6
Feb / -0°8913.57.210.41.2
Mar11° / 10014.15.511.72.6
Apr16° / 8412.71.413.14.6
May20° / 10°8813.1014.26.0
Jun24° / 14°7911.4014.97.0
Jul26° / 16°397.1014.67.5
Aug27° / 17°426.7013.67.5
Sep24° / 13°588.7012.37.4
Oct19° / 8610.50.110.96.1
Nov14° / 769.92.39.73.9
Dec / 10313.76.39.11.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17723
27624
37525
47426
57426
67327
77327
87228
97228
107228
117129
127129
137030
146931
156832
166832
176733
186733
196634
206634
216436
226436
236436
246337
256337
266238
276238
286238
296139
306139

Chance of precipitation in September

Any precipitation

Hendek gets around 58 mm of rain over 8.7 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 28% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
228
328
428
528
627
727
827
926
1026
1125
1225
1325
1426
1526
1627
1727
1828
1928
2029
2130
2230
2331
2431
2532
2632
2732
2832
2931
3031

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 39% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
116353613
218363512
319373310
42137329
52338318
62439307
72540297
82640286
92741275
102841275
112841264
122942263
133042253
143142253
153242242
163341242
173441232
183541222
193740211
203940201
214039191
224239181
234438171
244738151
254937141
265136121
275336110
285535100
29573490
30593380

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 5:28 AM to 5:58 AM, and sunset from 6:25 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:286:25
212.95:296:24
312.95:306:22
412.85:316:20
512.85:326:19
612.75:336:17
712.75:346:15
812.65:356:13
912.65:366:12
1012.55:376:10
1112.55:386:08
1212.55:396:06
1312.45:406:05
1412.45:416:03
1512.35:426:01
1612.35:435:59
1712.25:445:58
1812.25:455:56
1912.15:465:54
2012.15:475:52
2112.05:485:51
2212.05:495:49
2311.95:505:47
2411.95:525:45
2511.85:535:44
2611.85:545:42
2711.85:555:40
2811.75:565:38
2911.75:575:37
3011.65:585:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.61 kWh/m².

For context, solar energy here swings from a low near 1.59 kWh/m² to a high of 6.79 kWh/m² in July across the year — September's 4.61 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
95.0Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.6Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Is September a good time to visit Hendek?

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

7.4
Sightseeing
3rd-best month of the year
6.0
Beach & pool
3rd-best month of the year

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

What to pack for Hendek in September

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

In September, Hendek sees daytime highs around 24°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Hendek in September

The nearest coast averages about 23°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 38 km away) is warmest in August at about 25°C and coldest in February near 7°C.

It's comfortable for a long swim from Jun 11 to Oct 11 — about 4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb7Bracing
Mar8Bracing
Apr11Bracing
May16Cool
Jun21Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct20Cool
Nov15Cool
Dec11Bracing

UV index in Hendek in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hendek peaks around August 9 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowAug 9UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Hendek 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 Hendek is worst in March — around 48 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (December, 27 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Hendek's WHO annual average of 35.1 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 2448 µg/m³Dec 2127 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb33Moderate
Mar48Poor
Apr48Poor
May48Poor
Jun38Poor
Jul30Moderate
Aug32Moderate
Sep29Moderate
Oct30Moderate
Nov31Moderate
Dec27Moderate
Location & terrain

Where is Hendek?

Hendek sits at 40.8°N, 30.7°E, 185 m above sea level, in Turkey. The nearest listed city is Akyazı, 17 km away.

Topography around Hendek

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

Within 3 km, the terrain around Hendek has significant variations in elevation — a maximum elevation change of 437 m around an average of 203 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,509 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,935 m.

The land around Hendek is covered by trees (70%) and artificial surfaces (20%) within 3 km, trees (82%) within 16 km, and trees (59%) and water (20%) within 80 km.

3 km
437 m
16 km
1,509 m
80 km
1,935 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Akyazı 17 km · Ferizli 27 km · Adapazarı 29 km · Kocaali 30 km · Karasu Mahallesi 30 km · Karasu 34 km · Düzce 35 km · Sapanca 42 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 Hendek (40.7994°, 30.7481°, elevation 185 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).