Arsin weather in September

In September, Arsin sees average daytime highs of 22°C and overnight lows near 18°C, with 249 mm of rain across 17.6 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 25% of the time in September, and the air most often feels humid.

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 Arsin's 4th-clearest and 8th-windiest month. For the whole year in context, see Arsin's year-round climate.

Daytime high
22°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
249 mm
17.6 wet days
Daylight
12 h 18 min
5:07 AM – 5:23 PM
Cloud cover
60%
4th clearest
Wind
7 km/h
8th windiest
Solar energy
3.89 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 21°C by the end.

A typical September day in Arsin reaches about 22°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 26°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12420
22420
32420
42420
52319
62319
72319
82319
92319
102319
112319
122319
132319
142319
152318
162218
172218
182218
192218
202218
212218
222218
232218
242217
252217
262217
272117
282117
292117
302117

Arsin weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 12615.66.59.41.6
Feb / 10514.16.310.41.5
Mar11° / 14117.24.811.72.2
Apr14° / 14317.30.413.13.5
May18° / 14°18117.9014.34.8
Jun22° / 18°15716.1014.95.8
Jul24° / 21°13515.7014.66.2
Aug25° / 21°17517.5013.65.7
Sep22° / 18°24917.6012.35.6
Oct19° / 15°26217.8010.95.1
Nov15° / 10°15513.90.89.74.1
Dec11° / 12514.43.19.12.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 56%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24357
34357
44357
54357
64357
74357
84258
94258
104258
114357
124357
134357
144357
154357
164357
174357
184456
194456
204555
214555
224555
234654
244654
254753
264852
274753
284852
294852
304951

Chance of precipitation in September

Any precipitation

Arsin gets around 249 mm of rain over 17.6 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 58% and peaks near 60% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
157
258
358
459
559
660
760
860
959
1059
1159
1258
1358
1458
1558
1658
1758
1858
1958
2058
2157
2257
2357
2457
2557
2657
2756
2856
2955
3055

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
118314415
229324214
3210334113
4211344012
5313353911
6314353810
731536379
831636378
931737367
1031838357
1131938346
1231939335
1342039335
1442139324
1542139324
1642238323
1752238323
1852337323
1962437312
2072436312
2172535302
2282635292
2392734282
24102834271
25112833261
26122933251
27132933231
28143034221
29153034200
30163135180

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 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
156calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 4:51 AM to 5:21 AM, and sunset from 5:49 PM to 4:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.04:515:49
212.94:525:47
312.94:535:45
412.84:545:44
512.84:555:42
612.74:565:40
712.74:575:38
812.64:585:37
912.64:595:35
1012.55:005:33
1112.55:015:31
1212.55:025:30
1312.45:045:28
1412.45:055:26
1512.35:065:24
1612.35:075:23
1712.25:085:21
1812.25:095:19
1912.15:105:17
2012.15:115:16
2112.05:125:14
2212.05:135:12
2311.95:145:10
2411.95:155:09
2511.85:165:07
2611.85:175:05
2711.85:185:03
2811.75:195:02
2911.75:205:00
3011.65:214:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.89 kWh/m².

For context, solar energy here swings from a low near 1.6 kWh/m² to a high of 5.94 kWh/m² in June across the year — September's 3.89 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.3Bright
34.3Bright
44.3Bright
54.2Bright
64.2Bright
74.2Bright
84.1Bright
94.1Bright
104.1Bright
114.0Bright
124.0Bright
134.0Moderate
144.0Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.7Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Arsin?

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

5.6
Sightseeing
4th-best month of the year
4.1
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Arsin for sightseeing.

What to pack for Arsin in September

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

In September, Arsin sees daytime highs around 22°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 18 days see rain.

rain gearlight clothes

Sea temperature near Arsin in September

The nearest coast averages about 24°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 20 km away) is warmest in August at about 26°C and coldest in February near 9°C.

It's comfortable for a long swim from Jun 8 to Oct 20 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb9Bracing
Mar9Bracing
Apr11Bracing
May16Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct21Refreshing
Nov16Cool
Dec13Bracing

UV index in Arsin 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 Arsin peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highModerateJun 21UV 9Dec 17UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar3Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep7Very high
Oct4Moderate
Nov2Moderate
Dec2Low
Location & terrain

Where is Arsin?

Arsin sits at 41.0°N, 39.9°E, 16 m above sea level, in Turkey. The nearest listed city is Yomra, 6.0 km away.

Topography around Arsin

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

Within 3 km, the terrain around Arsin has significant variations in elevation — a maximum elevation change of 296 m around an average of 70 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,566 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,350 m.

The land around Arsin is covered by trees (50%) and water (43%) within 3 km, trees (50%) and water (46%) within 16 km, and trees (37%), water (32%) and grassland (29%) within 80 km.

3 km
296 m
16 km
1,566 m
80 km
3,350 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Yomra 6.0 km · Araklı 11 km · Sürmene 18 km · Trabzon 18 km · Of 28 km · Akçaabat 31 km · Rize 51 km · Vakfıkebir 56 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 Arsin (40.9527°, 39.9267°, elevation 16 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).