Erdemli weather in September

In September, Erdemli sees average daytime highs of 27°C and overnight lows near 23°C, with 19 mm of rain across 4.7 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 25°C by the end. The sky is clear or mostly clear about 93% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Erdemli's 3rd-clearest and 12th-windiest month. For the whole year in context, see Erdemli's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
23°
10th coldest
Rainfall
19 mm
4.7 wet days
Daylight
12 h 12 min
5:30 AM – 5:44 PM
Cloud cover
14%
3rd clearest
Wind
8 km/h
12th windiest
Solar energy
5.59 kWh/m²
Travel score
8.3
out of 10

Erdemli is district of Mersin, south-central Turkey.

Density
20/km²
people per km²
Founded
1954

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 28°C in the first days to 25°C by the end.

A typical September day in Erdemli reaches about 27°C in the afternoon and slips back to 23°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 29°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52824
62824
72724
82724
92723
102723
112723
122723
132723
142723
152723
162723
172723
182623
192622
202622
212622
222622
232622
242622
252622
262622
272622
282522
292521
302521

Erdemli 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 10611.62.19.83.0
Feb12° / 6791.710.63.4
Mar15° / 11°498.90.411.74.7
Apr18° / 14°378.2012.96.2
May22° / 17°399.3013.97.2
Jun25° / 21°267.4014.58.0
Jul28° / 24°113.6014.27.9
Aug29° / 25°134.6013.47.3
Sep27° / 23°194.7012.28.3
Oct23° / 19°355.7011.18.1
Nov18° / 15°676.50.2106.6
Dec13° / 11°13511.11.29.53.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 93% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 2%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11000
21000
31000
41000
51000
61000
71000
81000
9991
10991
11991
12991
13991
14991
15991
16991
17991
18982
19973
20973
21973
22973
23973
24964
25955
26955
27955
28946
29937
30937

Chance of precipitation in September

Any precipitation

Erdemli gets around 19 mm of rain over 4.7 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 15% and peaks near 19% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
111
211
310
411
511
611
712
812
913
1013
1114
1214
1315
1415
1516
1616
1716
1817
1917
2018
2118
2218
2319
2419
2519
2619
2719
2819
2918
3018

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
113145428
214155426
314175424
414185522
515205420
615215518
715235417
825245415
926255314
1026275312
1126285311
1226295310
132731519
142732518
153733507
163834487
173935476
184936455
1941037445
2041138424
2151239404
2251340383
2361441363
2471642342
2571742312
2681943291
2792044271
28102244241
29102344220
30112444200

Wind in September

Winds average 8 km/h in September, the calmest month.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 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 66 minutes over September. Sunrise moves from 5:18 AM to 5:42 AM, and sunset from 6:07 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:186:07
212.85:196:06
312.75:206:04
412.75:206:03
512.75:216:01
612.65:226:00
712.65:235:58
812.55:245:56
912.55:245:55
1012.55:255:53
1112.45:265:52
1212.45:275:50
1312.35:285:49
1412.35:295:47
1512.35:295:46
1612.25:305:44
1712.25:315:42
1812.15:325:41
1912.15:335:39
2012.15:345:38
2112.05:345:36
2212.05:355:35
2312.05:365:33
2411.95:375:31
2511.95:385:30
2611.85:395:28
2711.85:395:27
2811.85:405:25
2911.75:415:24
3011.75:425:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.59 kWh/m².

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 7.43 kWh/m² in June across the year — September's 5.59 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.1Intense
46.1Intense
56.1Intense
66.0Intense
76.0Bright
85.9Bright
95.9Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.6Bright
165.6Bright
175.5Bright
185.5Bright
195.4Bright
205.4Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
304.9Bright
Planning a trip in September

Hazard calendar for Erdemli

In seasonPeak

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

Erdemli's rainy season runs November–February, 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 Erdemli?

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

8.3
Sightseeing
1st-best month of the year
8.1
Beach & pool
3rd-best month of the year

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

What to pack for Erdemli in September

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

In September, Erdemli sees daytime highs around 27°C and nights near 23°C. Worth packing: light clothes and sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near Erdemli in September

The nearest coast averages about 28°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 29°C and coldest in February near 17°C.

It's comfortable for a long swim from May 3 to Dec 16 — about 7.5 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb17Cool
Mar17Cool
Apr18Cool
May21Refreshing
Jun25Warm
Jul28Warm
Aug29Tropical
Sep28Tropical
Oct26Warm
Nov23Refreshing
Dec20Refreshing

UV index in Erdemli 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 Erdemli peaks around July 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateJul 14UV 10Jan 11UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Erdemli 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 Erdemli is worst in May — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 921 µg/m³Dec 1813 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar20Moderate
Apr21Moderate
May21Moderate
Jun18Moderate
Jul15Moderate
Aug17Moderate
Sep17Moderate
Oct15Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Erdemli?

Erdemli sits at 36.6°N, 34.3°E, 11 m above sea level, in Turkey. The nearest listed city is Mersin, 37 km away.

KireçocağıAdanaEreğli

Topography around Erdemli

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

Within 3 km, the terrain around Erdemli has only modest variations in elevation — a maximum elevation change of 124 m around an average of 19 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,121 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,172 m.

The land around Erdemli is covered by water (44%) and trees (37%) within 3 km, water (47%) and trees (35%) within 16 km, and water (33%), grassland (32%) and trees (21%) within 80 km.

3 km
124 m
16 km
1,121 m
80 km
3,172 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Mersin 37 km · Silifke 42 km · Taşucu 50 km · Tarsus 63 km · Mut 78 km · Kireçocağı 96 km · Adana 100 km · Ereğli 104 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 Erdemli (36.605°, 34.3084°, elevation 11 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).