Chalkída weather in September

In September, Chalkída sees average daytime highs of 27°C and overnight lows near 19°C, with 29 mm of rain across 3.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 25°C by the end. The sky is clear or mostly clear about 72% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Chalkída's 4th-clearest and 7th-windiest month. For the whole year in context, see Chalkída's year-round climate.

Daytime high
27°
4th warmest
Overnight low
19°
9th coldest
Rainfall
29 mm
3.9 wet days
Daylight
12 h 12 min
6:13 AM – 6:27 PM
Cloud cover
27%
4th clearest
Wind
7 km/h
7th windiest
Solar energy
5.06 kWh/m²
Travel score
7.8
out of 10

Chalkída is Greek city in Central Greece region.

Density
143/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 25°C by the end.

A typical September day in Chalkída reaches about 27°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 31°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°35°151015202530
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
62820
72820
82819
92819
102819
112819
122819
132719
142719
152719
162718
172718
182718
192718
202718
212618
222618
232618
242617
252617
262617
272617
282517
292517
302517

Chalkída weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 679.51.49.63.0
Feb13° / 608.31.210.53.6
Mar15° / 637.70.511.75.0
Apr19° / 10°335.90136.9
May24° / 15°314.9014.18.0
Jun29° / 19°142.8014.67.1
Jul31° / 22°112.2014.46.2
Aug30° / 22°102.2013.56.4
Sep27° / 19°293.9012.37.8
Oct22° / 15°4060117.5
Nov17° / 10°52709.95.9
Dec13° / 779.30.99.43.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 72% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1937
2937
3937
4937
5919
6919
7919
88911
98911
108911
118713
128713
138713
148614
158515
168416
178416
188218
198218
208119
218020
228020
237921
247822
257822
267723
277723
287525
297525
307426

Chance of precipitation in September

Any precipitation

Chalkída gets around 29 mm of rain over 3.9 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 13% and peaks near 15% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
19
29
39
410
510
610
711
811
911
1012
1112
1212
1313
1413
1513
1614
1714
1814
1914
2014
2115
2215
2315
2415
2515
2615
2715
2815
2915
3015

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 40% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
19344710
21034469
31135458
41235458
51336447
61337437
71438426
81439416
91540406
101541396
111542385
121542375
131543375
141643375
151644364
161644364
171744364
181744354
191844353
201943343
212043343
222142333
232342333
242441322
252541322
262740312
272840302
282940292
292940292
303040282

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min 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 78 minutes over September. Sunrise moves from 5:59 AM to 6:25 AM, and sunset from 6:52 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:596:52
212.86:006:50
312.86:016:48
412.86:026:47
512.76:036:45
612.76:046:44
712.66:046:42
812.66:056:40
912.56:066:39
1012.56:076:37
1112.56:086:36
1212.46:096:34
1312.46:106:32
1412.36:116:31
1512.36:126:29
1612.26:136:27
1712.26:136:26
1812.26:146:24
1912.16:156:22
2012.16:166:21
2112.06:176:19
2212.06:186:17
2311.96:196:16
2411.96:206:14
2511.96:216:12
2611.86:226:11
2711.86:236:09
2811.76:246:08
2911.76:256:06
3011.66:256:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.06 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 7.4 kWh/m² in June across the year — September's 5.06 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.6Bright
75.5Bright
85.5Bright
95.4Bright
105.4Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.1Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.7Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
Planning a trip in September

Is September a good time to visit Chalkída?

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

7.8
Sightseeing
2nd-best month of the year
8.1
Beach & pool
4th-best month of the year

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

What to pack for Chalkída in September

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

In September, Chalkída sees daytime highs around 27°C and nights near 19°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Chalkída 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 46 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 29 to Oct 29 — about 5.1 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun23Refreshing
Jul25Warm
Aug26Warm
Sep24Warm
Oct21Refreshing
Nov18Cool
Dec16Cool

UV index in Chalkída 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 Chalkída peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highVery highHighModerateJun 23UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7Very high
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Chalkída 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 Chalkída is worst in August — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodAug 1221 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar15Moderate
Apr15Moderate
May14Moderate
Jun12Good
Jul18Moderate
Aug21Moderate
Sep11Good
Oct10Good
Nov10Good
Dec8Good
Location & terrain

Where is Chalkída?

Chalkída sits at 38.5°N, 23.6°E, 22 m above sea level, in Greece. The nearest listed city is Thívai, 29 km away.

Áno LiósiaAcharnésAsprópyrgosNéa ErythraíaKamaterónMetamórfosi

Topography around Chalkída

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

Within 3 km, the terrain around Chalkída has significant variations in elevation — a maximum elevation change of 275 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,008 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,722 m.

The land around Chalkída is covered by water (46%) and artificial surfaces (24%) within 3 km, trees (29%) and water (28%) within 16 km, and water (48%) and trees (27%) within 80 km.

3 km
275 m
16 km
1,008 m
80 km
1,722 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Thívai 29 km · Fylí 41 km · Áno Liósia 43 km · Acharnés 44 km · Asprópyrgos 45 km · Néa Erythraía 45 km · Kamaterón 46 km · Metamórfosi 46 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 Chalkída (38.4635°, 23.6028°, elevation 22 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).