Jounieh weather in September

In September, Jounieh sees average daytime highs of 28°C and overnight lows near 23°C, with 6 mm of rain across 1.2 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 29°C in the first days to 27°C by the end. The sky is clear or mostly clear about 96% of the time in September, and the air most often feels muggy.

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 Jounieh's 4th-clearest and 10th-windiest month. For the whole year in context, see Jounieh's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
23°
10th coldest
Rainfall
6 mm
1.2 wet days
Daylight
12 h 12 min
5:26 AM – 5:38 PM
Cloud cover
11%
4th clearest
Wind
10 km/h
10th windiest
Solar energy
5.84 kWh/m²
Travel score
8.3
out of 10

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 27°C by the end.

A typical September day in Jounieh reaches about 28°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52824
62824
72823
82823
92823
102823
112823
122823
132823
142823
152823
162823
172823
182823
192823
202823
212723
222722
232722
242722
252722
262722
272722
282722
292722
302722

Jounieh 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° / 10°14413.8104.4
Feb15° / 10°13811.310.74.7
Mar17° / 12°1059.411.75.9
Apr20° / 14°465.612.87.4
May24° / 18°17313.78.7
Jun26° / 22°20.714.29.1
Jul29° / 24°00.1148.1
Aug29° / 24°10.313.37.6
Sep28° / 23°61.212.28.3
Oct25° / 20°304.511.18.3
Nov21° / 16°787.710.27.3
Dec17° / 12°13311.39.85.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 96% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 3% 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 (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22982
23982
24982
25982
26982
27982
28982
29973
30973

Chance of precipitation in September

Any precipitation

Jounieh gets around 6 mm of rain over 1.2 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 8% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
22
32
42
52
62
72
82
92
102
112
123
133
143
153
163
174
184
194
205
215
225
236
246
256
267
277
287
297
308

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 65% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1011357281
2011556271
3021656251
4021756241
5021857221
6021957211
7022057201
8022157191
9022257181
10022358161
11032457151
12032655151
13032755141
14032855131
15032955121
16133152121
17133252111
18133351111
19143450101
20143649101
2115374791
2226384690
2326394480
2427404380
2538414170
2639423970
2739433770
28410443660
29411453460
30411463350

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 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
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 6:00 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:156:00
212.75:165:58
312.75:165:57
412.65:175:55
512.65:185:54
612.65:195:53
712.55:195:51
812.55:205:50
912.55:215:48
1012.45:215:47
1112.45:225:45
1212.45:235:44
1312.35:235:42
1412.35:245:41
1512.25:255:40
1612.25:265:38
1712.25:265:37
1812.15:275:35
1912.15:285:34
2012.15:285:32
2112.05:295:31
2212.05:305:29
2312.05:315:28
2411.95:315:26
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 5.84 kWh/m².

For context, solar energy here swings from a low near 2.55 kWh/m² to a high of 7.77 kWh/m² in June across the year — September's 5.84 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.4Intense
36.4Intense
46.4Intense
56.3Intense
66.3Intense
76.2Intense
86.2Intense
96.2Intense
106.1Intense
116.1Intense
126.0Intense
136.0Bright
145.9Bright
155.9Bright
165.8Bright
175.8Bright
185.7Bright
195.7Bright
205.6Bright
215.6Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.3Bright
285.3Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for Jounieh

In seasonPeak

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

Jounieh'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 Jounieh?

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

8.3
Sightseeing
3rd-best month of the year
9.1
Beach & pool
3rd-best month of the year

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

What to pack for Jounieh in September

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

In September, Jounieh sees daytime highs around 28°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Jounieh 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 16 km away) is warmest in August at about 28°C and coldest in February 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
Jan19Cool
Feb17Cool
Mar17Cool
Apr19Cool
May21Refreshing
Jun25Warm
Jul27Warm
Aug28Tropical
Sep28Warm
Oct26Warm
Nov23Refreshing
Dec21Refreshing

UV index in Jounieh 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 Jounieh 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 Jounieh 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 Jounieh 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 Jounieh?

Jounieh sits at 34.0°N, 35.6°E, 40 m above sea level, in Lebanon. The nearest listed city is Beirut, 14 km away.

BeirutRa’s BayrūtByblosAleyZahleChmistârBsharriJezzine

Topography around Jounieh

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

Within 3 km, the terrain around Jounieh has large variations in elevation — a maximum elevation change of 603 m around an average of 71 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,596 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,068 m.

The land around Jounieh is covered by water (51%), artificial surfaces (25%) and trees (22%) within 3 km, water (42%) and trees (39%) within 16 km, and grassland (38%) and water (32%) within 80 km.

3 km
603 m
16 km
1,596 m
80 km
3,068 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Beirut 14 km · Ra’s Bayrūt 15 km · Byblos 16 km · Aley 20 km · Zahle 30 km · Chmistâr 37 km · Bsharri 47 km · Jezzine 49 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 Jounieh (33.9808°, 35.6178°, elevation 40 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).