Ali Mendjeli weather in September

In September, Ali Mendjeli sees average daytime highs of 29°C and overnight lows near 17°C, with 31 mm of rain across 8 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 31°C in the first days to 26°C by the end. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Ali Mendjeli's 4th-clearest and 12th-windiest month. For the whole year in context, see Ali Mendjeli's year-round climate.

Daytime high
29°
4th warmest
Overnight low
17°
9th coldest
Rainfall
31 mm
8 wet days
Daylight
12 h 12 min
6:21 AM – 6:35 PM
Cloud cover
44%
4th clearest
Wind
7 km/h
12th windiest
Solar energy
5.18 kWh/m²
Travel score
6.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 31°C in the first days to 26°C by the end.

A typical September day in Ali Mendjeli reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 34°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13219
23118
33118
43118
53118
63018
73018
83018
93017
103017
112917
122917
132917
142917
152917
162916
172816
182816
192816
202816
212816
222816
232716
242715
252715
262715
272715
282615
292615
302615

How September really feels in Ali Mendjeli

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.

Ali Mendjeli 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° / 458.51.29.83.5
Feb13° / 418.31.210.63.9
Mar16° / 509.10.511.75.4
Apr20° / 539.40.212.96.4
May25° / 12°487.9013.97.4
Jun30° / 17°195.4014.45.8
Jul34° / 20°93.3014.23.7
Aug34° / 20°195.3013.43.8
Sep29° / 17°318012.26.1
Oct24° / 12°367.5011.17.4
Nov17° / 386.7010.16.0
Dec13° / 447.50.59.64.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 29%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28119
38020
47921
57822
67723
77624
87624
97525
107525
117327
127327
137228
147129
157030
166931
176832
186733
196733
206634
216535
226535
236535
246535
256436
266436
276436
286436
296436
306436

Chance of precipitation in September

Any precipitation

Ali Mendjeli gets around 31 mm of rain over 8 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 26% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
125
225
326
427
527
627
728
828
928
1027
1127
1227
1327
1426
1526
1626
1726
1826
1926
2026
2126
2226
2326
2426
2526
2626
2726
2826
2926
3026

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 (%)
12843254
22843254
32943254
42943253
52943243
63043243
73143243
83142233
93242233
103341223
113441223
123640222
133740212
143839212
153939202
164039201
174139191
184238181
194339171
204439171
214539161
224639150
234739140
244839130
254939120
265138110
275138110
285238100
29543790
30553780

Wind in September

Winds average 7 km/h in September, the calmest month.

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 48 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 66 minutes over September. Sunrise moves from 6:09 AM to 6:33 AM, and sunset from 6:58 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:096:58
212.86:106:56
312.76:116:55
412.76:126:53
512.76:126:52
612.66:136:50
712.66:146:49
812.56:156:47
912.56:166:46
1012.56:166:44
1112.46:176:43
1212.46:186:41
1312.36:196:40
1412.36:206:38
1512.36:206:36
1612.26:216:35
1712.26:226:33
1812.16:236:32
1912.16:246:30
2012.16:246:29
2112.06:256:27
2212.06:266:26
2312.06:276:24
2411.96:286:22
2511.96:296:21
2611.86:296:19
2711.86:306:18
2811.86:316:16
2911.76:326:15
3011.76:336:13

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.18 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 7.5 kWh/m² in July across the year — September's 5.18 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Ali Mendjeli

In seasonPeak

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

Ali Mendjeli sees seasonal dust haze (June–July), heaviest in June.

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

Is September a good time to visit Ali Mendjeli?

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

6.1
Sightseeing
4th-best month of the year
7.3
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Ali Mendjeli for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Ali Mendjeli in September

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

In September, Ali Mendjeli sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Ali Mendjeli in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ali Mendjeli peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 15UV 10Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May7Very high
Jun8Very high
Jul10Very high
Aug8Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Ali Mendjeli 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 Ali Mendjeli is worst in October — around 36 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModeratePoorModerateOct 936 µg/m³Jul 1730 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb32Moderate
Mar33Moderate
Apr36Poor
May33Moderate
Jun32Moderate
Jul30Moderate
Aug32Moderate
Sep36Poor
Oct36Poor
Nov32Moderate
Dec32Moderate
Location & terrain

Where is Ali Mendjeli?

Ali Mendjeli sits at 36.2°N, 6.6°E, 790 m above sea level, in Algeria. The nearest listed city is Aïn Smara, 6.0 km away.

Topography around Ali Mendjeli

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

Within 3 km, the terrain around Ali Mendjeli has only modest variations in elevation — a maximum elevation change of 232 m around an average of 783 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 963 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,787 m.

The land around Ali Mendjeli is covered by artificial surfaces (38%), grassland (27%) and cropland (23%) within 3 km, cropland (55%) and grassland (28%) within 16 km, and cropland (48%) and grassland (28%) within 80 km.

3 km
232 m
16 km
963 m
80 km
1,787 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Aïn Smara 6.0 km · El Khroub 12 km · Constantine 14 km · Hamma Bouziane 19 km · Aïn M’Lila 23 km · Didouche Mourad 24 km · Telerghma 24 km · ’Aïn Abid 34 km

Algeria travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$6,051
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
69%
of population, 2024
Homicide rate
1.2
per 100k, 2023
Road deaths
20.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 468
Religion
Muslim 99%

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 Ali Mendjeli (36.2459°, 6.5671°, elevation 790 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. 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).