Mégara weather in September

In September, Mégara sees average daytime highs of 26°C and overnight lows near 20°C, with 16 mm of rain across 2.4 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 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 76% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Mégara's 4th-clearest and 9th-windiest month. For the whole year in context, see Mégara's year-round climate.

Daytime high
26°
4th warmest
Overnight low
20°
9th coldest
Rainfall
16 mm
2.4 wet days
Daylight
12 h 12 min
6:14 AM – 6:28 PM
Cloud cover
24%
4th clearest
Wind
9 km/h
9th windiest
Solar energy
5.16 kWh/m²
Travel score
8.4
out of 10

Mégara is city in western Attica, Greece.

Density
73/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 28°C in the first days to 24°C by the end.

A typical September day in Mégara reaches about 26°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62821
72821
82721
92721
102721
112721
122721
132721
142720
152620
162620
172620
182620
192620
202620
212620
222519
232519
242519
252519
262519
272519
282519
292419
302418

Mégara 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
Jan11° / 5580.59.73.0
Feb12° / 487.40.610.53.4
Mar14° / 536.90.211.74.7
Apr18° / 12°264.70136.7
May23° / 16°194.10148.2
Jun28° / 20°71.6014.68.1
Jul30° / 23°30.7014.46.9
Aug30° / 23°30.8013.57.0
Sep26° / 20°162.4012.38.4
Oct22° / 16°324.50117.8
Nov17° / 12°506.709.95.8
Dec13° / 618.50.49.43.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% 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 11%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1973
2964
3955
4955
5955
6946
7946
8937
9928
10928
11928
12919
139010
149010
158911
168911
178812
188713
198713
208614
218515
228515
238515
248416
258317
268317
278218
288218
298020
308020

Chance of precipitation in September

Any precipitation

Mégara gets around 16 mm of rain over 2.4 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 8% and peaks near 10% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
24
35
45
55
65
75
86
96
106
117
127
137
148
158
168
179
189
199
2010
2110
2210
2310
2410
2510
2610
2710
2810
2910
3010

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
112274615
213284514
314294513
415304412
515314311
616324310
71632429
81733419
91734418
101735407
111736407
121836406
131837396
141937386
151937386
162037375
172137365
182237365
192337355
202437345
212537345
222636335
232836324
242935314
253135304
263235294
273335284
283434274
293535264
303635254

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 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
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 12 h 54 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 72 minutes over September. Sunrise moves from 6:00 AM to 6:26 AM, and sunset from 6:52 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:006:52
212.86:016:51
312.86:026:49
412.76:036:47
512.76:046:46
612.76:056:44
712.66:066:43
812.66:076:41
912.56:086:40
1012.56:086:38
1112.56:096:36
1212.46:106:35
1312.46:116:33
1412.36:126:31
1512.36:136:30
1612.26:146:28
1712.26:156:27
1812.26:156:25
1912.16:166:23
2012.16:176:22
2112.06:186:20
2212.06:196:18
2311.96:206:17
2411.96:216:15
2511.96:226:14
2611.86:236:12
2711.86:246:10
2811.76:246:09
2911.76:256:07
3011.76:266:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.16 kWh/m².

For context, solar energy here swings from a low near 1.84 kWh/m² to a high of 7.4 kWh/m² in June across the year — September's 5.16 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.8Bright
55.8Bright
65.7Bright
75.6Bright
85.6Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.1Bright
185.0Bright
195.0Bright
204.9Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.6Bright
264.6Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Mégara?

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

8.4
Sightseeing
1st-best month of the year
8.2
Beach & pool
4th-best month of the year

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

What to pack for Mégara in September

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

In September, Mégara sees daytime highs around 26°C and nights near 20°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Mégara in September

The nearest coast averages about 25°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 14 km away) is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 27 to Nov 17 — about 5.8 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb15Bracing
Mar15Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Mégara 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 Mégara 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 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 Mégara 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 Mégara 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 Mégara?

Mégara sits at 38.0°N, 23.3°E, 35 m above sea level, in Greece. The nearest listed city is Salamína, 14 km away.

Topography around Mégara

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

Within 3 km, the terrain around Mégara has only modest variations in elevation — a maximum elevation change of 187 m around an average of 40 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,122 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,102 m.

The land around Mégara is covered by grassland (42%) and artificial surfaces (21%) within 3 km, water (38%) and trees (25%) within 16 km, and water (41%) and trees (26%) within 80 km.

3 km
187 m
16 km
1,122 m
80 km
2,102 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Salamína 14 km · Elefsína 18 km · Pérama 20 km · Asprópyrgos 23 km · Keratsíni 24 km · Korydallós 27 km · Níkaia 27 km · Piraeus 27 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 Mégara (37.9947°, 23.3432°, elevation 35 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).