Aley weather in September

In September, Aley sees average daytime highs of 29°C and overnight lows near 20°C, with 6 mm of rain across 1.3 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 93% of the time in September, and the air most often feels humid.

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

Daytime high
29°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
6 mm
1.3 wet days
Daylight
12 h 12 min
5:26 AM – 5:38 PM
Cloud cover
12%
4th clearest
Wind
7 km/h
11th windiest
Solar energy
5.9 kWh/m²
Travel score
7.2
out of 10

Aley is town in Lebanon.

Density
15,222/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 30°C in the first days to 28°C by the end.

A typical September day in Aley reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, September runs about 1°C cooler than August and about 3°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113021
123021
133020
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242919
252919
262919
272919
282819
292819
302819

Aley weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan15° / 12312.7104.3
Feb15° / 12111.210.74.7
Mar18° / 949.811.76.0
Apr21° / 12°466.312.87.4
May25° / 15°183.413.78.5
Jun28° / 19°30.914.28.2
Jul30° / 21°10.2146.9
Aug31° / 22°10.313.36.6
Sep29° / 20°61.312.27.2
Oct27° / 17°264.811.17.9
Nov22° / 12°657.610.27.4
Dec17° / 10510.49.85.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 93% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 1%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
2991
3991
4991
5991
6991
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
18991
19991
20991
21991
22991
23982
24982
25982
26982
27982
28982
29973
30964

Chance of precipitation in September

Any precipitation

Aley gets around 6 mm of rain over 1.3 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 4% and peaks near 9% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
11
22
32
42
52
62
72
82
92
102
112
122
132
142
153
163
173
184
194
205
215
226
237
247
257
268
278
288
298
309

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
116374610
217384410
31839429
42840419
52941398
621042388
721143368
821144357
921245337
1031346326
1131447316
1231547305
1331548295
1431648285
1531749275
1631849264
1741849254
1841949244
1942049234
2052149224
2152249214
2262348203
2362448193
2472547193
2582646182
2692746172
27102845162
28112844152
29113044141
30123143131

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

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
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 42 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 60 minutes over September. Sunrise moves from 5:15 AM to 5:36 AM, and sunset from 5:59 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:155:59
212.75:165:58
312.75:175:57
412.65:175:55
512.65:185:54
612.65:195:52
712.55:195:51
812.55:205:50
912.55:215:48
1012.45:225:47
1112.45:225:45
1212.45:235:44
1312.35:245:42
1412.35:245:41
1512.25:255:40
1612.25:265:38
1712.25:265:37
1812.15:275:35
1912.15:285:34
2012.15:295:32
2112.05:295:31
2212.05:305:29
2312.05:315:28
2411.95:315:27
2511.95:325:25
2611.85:335:24
2711.85:345:22
2811.85:345:21
2911.75:355:19
3011.75:365:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.9 kWh/m².

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 7.81 kWh/m² in June across the year — September's 5.9 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.4Intense
56.4Intense
66.3Intense
76.3Intense
86.2Intense
96.2Intense
106.2Intense
116.1Intense
126.1Intense
136.0Intense
146.0Bright
155.9Bright
165.9Bright
175.8Bright
185.8Bright
195.8Bright
205.7Bright
215.7Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.4Bright
275.4Bright
285.3Bright
295.3Bright
305.2Bright
Planning a trip in September

Hazard calendar for Aley

In seasonPeak

None of Aley's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Aley's rainy season runs November–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Aley?

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

7.2
Sightseeing
6th-best month of the year
9.2
Beach & pool
2nd-best month of the year

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

What to pack for Aley in September

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

In September, Aley sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Aley in September

The nearest coast averages about 28°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 22 km away) is warmest in August at about 28°C and coldest in March near 17°C.

It's comfortable for a long swim from May 3 to Dec 23 — about 7.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb18Cool
Mar17Cool
Apr19Cool
May21Refreshing
Jun25Warm
Jul27Warm
Aug28Tropical
Sep28Warm
Oct26Warm
Nov23Refreshing
Dec21Refreshing

UV index in Aley in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Aley peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 21UV 10Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Aley 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 Aley is worst in April — around 45 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (August, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1544 µg/m³Aug 1919 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb34Moderate
Mar39Poor
Apr45Poor
May38Poor
Jun28Moderate
Jul21Moderate
Aug19Moderate
Sep20Moderate
Oct23Moderate
Nov28Moderate
Dec26Moderate
Location & terrain

Where is Aley?

Aley sits at 33.8°N, 35.6°E, 878 m above sea level, in Lebanon. The nearest listed city is Beirut, 13 km away.

BeirutRa’s BayrūtJouniehZahleJezzineSidonByblosGhazieh

Topography around Aley

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

Within 3 km, the terrain around Aley has large variations in elevation — a maximum elevation change of 838 m around an average of 718 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,945 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,079 m.

The land around Aley is covered by trees (53%) and artificial surfaces (22%) within 3 km, trees (47%) within 16 km, and grassland (38%) and water (29%) within 80 km.

3 km
838 m
16 km
1,945 m
80 km
3,079 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Beirut 13 km · Ra’s Bayrūt 15 km · Jounieh 20 km · Zahle 28 km · Jezzine 29 km · Sidon 35 km · Byblos 35 km · Ghazieh 38 km

Lebanon travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type A / B / C / D / G
220 V · 50 Hz
Prices
≈ 38% of US
price level, 2024
GDP per capita
$4,473
2024
Happiness
3.7 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
2.2
per 100k, 2020
Road deaths
16.4
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 477
Religion
Muslim 68%Christian 32%Druze 5%

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 Aley (33.8053°, 35.6°, elevation 878 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).