Sérres weather in September

In September, Sérres sees average daytime highs of 26°C and overnight lows near 15°C, with 47 mm of rain across 6.7 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 29°C in the first days to 24°C by the end. The sky is clear or mostly clear about 59% 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 Sérres's 3rd-clearest and 9th-windiest month. For the whole year in context, see Sérres's year-round climate.

Daytime high
26°
4th warmest
Overnight low
15°
9th coldest
Rainfall
47 mm
6.7 wet days
Daylight
12 h 18 min
6:12 AM – 6:28 PM
Cloud cover
37%
3rd clearest
Wind
5 km/h
9th windiest
Solar energy
4.63 kWh/m²
Travel score
7.5
out of 10

Sérres is city in Central Macedonia, Greece.

Density
97/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 29°C in the first days to 24°C by the end.

A typical September day in Sérres reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°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)
12918
22917
32917
42817
52817
62817
72817
82816
92716
102716
112716
122716
132716
142716
152615
162615
172615
182615
192615
202515
212515
222514
232514
242514
252414
262414
272414
282413
292413
302313

How September really feels in Sérres

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.

Sérres 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 / 567.92.39.41.3
Feb10° / 548.5210.42.3
Mar14° / 7010.21.311.74.1
Apr18° / 6310.40.113.15.9
May24° / 13°6910.8014.36.9
Jun28° / 17°559.1014.96.3
Jul31° / 19°426.5014.75.3
Aug31° / 19°335.8013.65.3
Sep26° / 15°476.7012.37.5
Oct20° / 10°627.7010.96.8
Nov14° / 6580.39.74.2
Dec / 788.61.69.11.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28416
38416
48218
58218
68218
78020
88020
98020
107921
117921
127822
137723
147624
157624
167525
177426
187426
197228
207129
217129
226931
236931
246931
256832
266832
276832
286733
296733
306634

Chance of precipitation in September

Any precipitation

Sérres gets around 47 mm of rain over 6.7 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 21% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
119
219
320
420
520
620
720
819
919
1019
1119
1219
1319
1419
1520
1620
1721
1821
1922
2023
2123
2224
2324
2424
2525
2625
2725
2825
2925
3026

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 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12840311
22941291
33041271
43242260
53343240
63444220
73544210
83644190
93745180
103845170
113945160
124045150
134144140
144244140
154343130
164442130
174541130
184740130
194838130
204937130
215136130
225136130
235235130
245434120
255434120
265533120
275732110
285732110
295931100
305931100

Wind in September

Winds average 5 km/h in September.

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

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
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 5:57 AM to 6:27 AM, and sunset from 6:54 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:576:54
212.95:586:53
312.95:596:51
412.86:006:49
512.86:016:48
612.76:026:46
712.76:036:44
812.66:046:42
912.66:056:41
1012.56:066:39
1112.56:076:37
1212.56:086:35
1312.46:096:34
1412.46:106:32
1512.36:116:30
1612.36:126:28
1712.26:136:26
1812.26:146:25
1912.16:156:23
2012.16:166:21
2112.06:176:19
2212.06:186:18
2311.96:196:16
2411.96:206:14
2511.86:216:12
2611.86:226:11
2711.86:246:09
2811.76:256:07
2911.76:266:05
3011.66:276:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.63 kWh/m².

For context, solar energy here swings from a low near 1.61 kWh/m² to a high of 6.8 kWh/m² in June across the year — September's 4.63 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.1Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
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 Sérres?

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

7.5
Sightseeing
1st-best month of the year
7.2
Beach & pool
3rd-best month of the year

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

What to pack for Sérres in September

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

In September, Sérres sees daytime highs around 26°C and nights near 15°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Sérres 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 58 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from May 26 to Oct 24 — about 5 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May19Cool
Jun23Refreshing
Jul26Warm
Aug26Warm
Sep24Warm
Oct21Refreshing
Nov18Cool
Dec15Cool

UV index in Sérres 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 Sérres peaks around June 22 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJun 22UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr8Very high
May6High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Sérres 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 Sérres is worst in March — around 15 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2215 µg/m³Dec 1410 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar15Moderate
Apr15Moderate
May14Moderate
Jun14Moderate
Jul12Moderate
Aug13Moderate
Sep11Good
Oct10Good
Nov11Good
Dec9Good
Location & terrain

Where is Sérres?

Sérres sits at 41.1°N, 23.5°E, 41 m above sea level, in Greece. The nearest listed city is Petrich, 45 km away.

PetrichDrámaLagkadásGotse DelchevKilkísSandanskiChortiátisOraiókastro

Topography around Sérres

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

Within 3 km, the terrain around Sérres has only modest variations in elevation — a maximum elevation change of 194 m around an average of 64 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,853 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,876 m.

The land around Sérres is covered by artificial surfaces (29%), cropland (25%) and trees (21%) within 3 km, cropland (50%), trees (20%) and grassland (20%) within 16 km, and trees (50%) and cropland (21%) within 80 km.

3 km
194 m
16 km
1,853 m
80 km
2,876 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Petrich 45 km · Dráma 51 km · Lagkadás 55 km · Gotse Delchev 56 km · Kilkís 57 km · Sandanski 58 km · Chortiátis 65 km · Oraiókastro 66 km

Greece travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$26,948
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
8.3
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 592
Religion
other 3%Muslim 2%

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 Sérres (41.085°, 23.5476°, elevation 41 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).