Sidi Aïssa weather in September

In September, Sidi Aïssa sees average daytime highs of 29°C and overnight lows near 16°C, with 33 mm of rain across 5.7 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-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 52% of the time in September, and the air most often feels dry.

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 Sidi Aïssa's 4th-clearest and 11th-windiest month. For the whole year in context, see Sidi Aïssa's year-round climate.

Daytime high
29°
4th warmest
Overnight low
16°
9th coldest
Rainfall
33 mm
5.7 wet days
Daylight
12 h 12 min
6:33 AM – 6:46 PM
Cloud cover
41%
4th clearest
Wind
9 km/h
11th windiest
Solar energy
5.42 kWh/m²
Travel score
6.5
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 Sidi Aïssa reaches about 29°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, September runs about 6°C cooler than August and about 6°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13219
23219
33118
43118
53118
63118
73018
83018
93017
103017
113017
122917
132917
142917
152916
162816
172816
182816
192816
202816
212716
222715
232715
242715
252715
262615
272615
282615
292614
302614

How September really feels in Sidi Aïssa

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.

Sidi Aïssa weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 367.51.19.83.0
Feb13° / 317.71.610.63.7
Mar16° / 387.70.411.75.6
Apr20° / 478.60.112.96.6
May25° / 12°386.6013.97.6
Jun31° / 17°163.8014.45.6
Jul35° / 21°72.4014.23.3
Aug34° / 20°144.3013.43.5
Sep29° / 16°335.7012.26.5
Oct23° / 12°325.9011.17.6
Nov16° / 346.6010.15.5
Dec12° / 316.90.89.63.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
37921
47921
57822
67624
77624
87525
97426
107426
117426
127327
137228
147129
157129
167030
177030
186931
196832
206832
216733
226733
236733
246733
256733
266733
276733
286733
296733
306832

Chance of precipitation in September

Any precipitation

Sidi Aïssa gets around 33 mm of rain over 5.7 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 19% and peaks near 20% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
115
215
316
416
517
617
718
819
919
1019
1120
1220
1320
1420
1520
1620
1720
1820
1920
2020
2120
2220
2319
2419
2519
2619
2719
2819
2919
3018

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 65% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
157349
257349
357349
458339
558339
659329
7583210
8603010
9602911
10612811
11622711
12622612
13632512
14642412
15652312
16652312
17662212
18672211
19682111
20682111
21692110
2270219
2370219
2471218
2572217
2673216
2774215
2874215
2975214
3075214

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

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
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 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 6:21 AM to 6:44 AM, and sunset from 7:09 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:217:09
212.86:217:07
312.76:227:06
412.76:237:04
512.66:247:03
612.66:257:01
712.66:257:00
812.56:266:58
912.56:276:57
1012.56:286:55
1112.46:296:54
1212.46:296:52
1312.36:306:51
1412.36:316:49
1512.36:326:47
1612.26:336:46
1712.26:336:44
1812.16:346:43
1912.16:356:41
2012.16:366:40
2112.06:376:38
2212.06:376:37
2312.06:386:35
2411.96:396:34
2511.96:406:32
2611.86:416:31
2711.86:416:29
2811.86:426:28
2911.76:436:26
3011.76:446:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.42 kWh/m².

For context, solar energy here swings from a low near 2.39 kWh/m² to a high of 7.58 kWh/m² in July across the year — September's 5.42 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.0Intense
46.0Bright
55.9Bright
65.9Bright
75.8Bright
85.8Bright
95.8Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.5Bright
155.5Bright
165.4Bright
175.4Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Sidi Aïssa

In seasonPeak

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

Sidi Aïssa sees seasonal dust haze (June–July), heaviest in July.

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

Is September a good time to visit Sidi Aïssa?

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

6.5
Sightseeing
4th-best month of the year
7.6
Beach & pool
2nd-best month of the year

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

What to pack for Sidi Aïssa in September

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

In September, Sidi Aïssa sees daytime highs around 29°C and nights near 16°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Sidi Aïssa 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 Sidi Aïssa peaks around July 11 at about 10 (extreme) — 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 highExtremeVery highHighModerateJul 11UV 10Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar7High
Apr8Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Sidi Aïssa 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 Sidi Aïssa is worst in September — around 39 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModeratePoorModerateSep 1539 µg/m³Nov 1831 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb33Moderate
Mar36Poor
Apr35Moderate
May34Moderate
Jun34Moderate
Jul38Poor
Aug37Poor
Sep39Poor
Oct36Poor
Nov31Moderate
Dec34Moderate
Location & terrain

Where is Sidi Aïssa?

Sidi Aïssa sits at 35.9°N, 3.8°E, 662 m above sea level, in Algeria. The nearest listed city is Ain el Hadjel, 26 km away.

Topography around Sidi Aïssa

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

Within 3 km, the terrain around Sidi Aïssa has only modest variations in elevation — a maximum elevation change of 160 m around an average of 685 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 752 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,173 m.

The land around Sidi Aïssa is covered by bare terrain (39%) and cropland (28%) within 3 km, bare terrain (43%), cropland (34%) and grassland (21%) within 16 km, and grassland (42%), cropland (25%) and bare terrain (21%) within 80 km.

3 km
160 m
16 km
752 m
80 km
2,173 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Ain el Hadjel 26 km · Sour el Ghozlane 30 km · Chellalat el Adhaouara 33 km · Melouza 39 km · Aïn Bessem 46 km · Bouïra 56 km · Birine 57 km · Mansourah 65 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 Sidi Aïssa (35.8855°, 3.7724°, elevation 662 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).