Aytos weather in September

In September, Aytos sees average daytime highs of 24°C and overnight lows near 14°C, with 52 mm of rain across 6.6 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 48% of the time in September, and the air most often feels dry.

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 Aytos's 3rd-clearest and 8th-windiest month. For the whole year in context, see Aytos's year-round climate.

Daytime high
24°
4th warmest
Overnight low
14°
9th coldest
Rainfall
52 mm
6.6 wet days
Daylight
12 h 18 min
5:57 AM – 6:14 PM
Cloud cover
45%
3rd clearest
Wind
9 km/h
8th windiest
Solar energy
4.28 kWh/m²
Travel score
7.6
out of 10

Aytos is city in Aytos municipality, Burgas oblast, Bulgaria.

Density
266/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 Aytos reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 28°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12616
22616
32615
42615
52615
62515
72515
82515
92515
102514
112514
122414
132414
142414
152414
162414
172414
182313
192313
202313
212313
222313
232213
242213
252212
262212
272212
282212
292112
302112

How September really feels in Aytos

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.

Aytos 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 / -1°517.43.59.20.1
Feb / -0°467.13.110.31.0
Mar11° / 599.52.211.62.8
Apr16° / 5910.30.313.14.9
May21° / 11°6711.3014.46.4
Jun26° / 16°6910.6015.16.8
Jul28° / 18°618.4014.86.7
Aug28° / 18°386013.76.9
Sep24° / 14°526.6012.37.6
Oct18° / 5870.210.86.1
Nov12° / 506.719.63.3
Dec / 568.12.88.90.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% 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
47525
57426
67426
77327
87327
97426
107327
117327
127228
137327
147228
157129
167030
177030
186832
196733
206634
216535
226436
236337
246139
256040
266040
275941
285743
295743
305644

Chance of precipitation in September

Any precipitation

Aytos gets around 52 mm of rain over 6.6 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 21% and peaks near 24% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
121
221
321
421
520
620
720
819
919
1019
1119
1218
1318
1419
1519
1619
1720
1820
1921
2021
2122
2222
2323
2423
2523
2624
2724
2824
2924
3024

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 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12532349
22733328
32934317
43035296
53236285
63336264
73437254
83538243
93638233
103739222
113839222
123839212
133939202
144038202
154238192
164337182
174437182
184536182
194635171
204734171
214933171
225132161
235231161
245430151
255529151
265629141
275728141
285927131
295927131
306127120

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:40 AM to 6:13 AM, and sunset from 6:41 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:406:41
213.05:416:39
312.95:426:38
412.95:436:36
512.85:456:34
612.85:466:32
712.75:476:30
812.75:486:29
912.65:496:27
1012.65:506:25
1112.55:516:23
1212.55:526:21
1312.45:536:19
1412.45:556:18
1512.35:566:16
1612.35:576:14
1712.25:586:12
1812.25:596:10
1912.16:006:08
2012.16:016:06
2112.06:026:05
2212.06:036:03
2311.96:056:01
2411.96:065:59
2511.86:075:57
2611.86:085:55
2711.76:095:53
2811.76:105:52
2911.66:115:50
3011.66:135:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.28 kWh/m².

For context, solar energy here swings from a low near 1.4 kWh/m² to a high of 6.55 kWh/m² in June across the year — September's 4.28 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Aytos?

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

7.6
Sightseeing
1st-best month of the year
6.2
Beach & pool
4th-best month of the year

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

What to pack for Aytos in September

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

In September, Aytos sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Aytos 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 51 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 10 to Oct 5 — about 3.9 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar7Bracing
Apr10Bracing
May16Cool
Jun21Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov14Bracing
Dec10Bracing

UV index in Aytos 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 Aytos peaks around July 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 18UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr8Very high
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Aytos?

Aytos sits at 42.7°N, 27.3°E, 149 m above sea level, in Bulgaria. The nearest listed city is Karnobat, 23 km away.

NessebarYambolShumenAsparuhovoSlivenVarna

Topography around Aytos

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

Within 3 km, the terrain around Aytos has only modest variations in elevation — a maximum elevation change of 249 m around an average of 129 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 638 m; within 80 km, large variations in elevation — a maximum elevation change of 1,167 m.

The land around Aytos is covered by grassland (41%) and cropland (36%) within 3 km, cropland (47%), trees (29%) and grassland (21%) within 16 km, and trees (36%) and cropland (32%) within 80 km.

3 km
249 m
16 km
638 m
80 km
1,167 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Karnobat 23 km · Burgas 28 km · Nessebar 40 km · Yambol 66 km · Shumen 69 km · Asparuhovo 74 km · Sliven 76 km · Varna 78 km

Bulgaria travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$20,328
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
96%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
9.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 594
Religion
Christian 65%Muslim 10%none 5%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 Aytos (42.7032°, 27.2546°, elevation 149 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).