Annaba weather in September

In September, Annaba sees average daytime highs of 28°C and overnight lows near 22°C, with 41 mm of rain across 6.8 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 27°C by the end. The sky is clear or mostly clear about 54% of the time in September, and the air most often feels muggy.

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

Daytime high
28°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
41 mm
6.8 wet days
Daylight
12 h 12 min
6:16 AM – 6:30 PM
Cloud cover
41%
4th clearest
Wind
10 km/h
10th windiest
Solar energy
4.95 kWh/m²
Travel score
6.6
out of 10

Annaba is city in Algeria.

Density
6,994/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 27°C by the end.

A typical September day in Annaba reaches about 28°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
62923
72922
82922
92922
102922
112922
122922
132922
142822
152822
162822
172821
182821
192821
202821
212821
222721
232721
242721
252721
262720
272720
282720
292720
302620

How September really feels in Annaba

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.

Annaba weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan15° / 8811.99.84.6
Feb15° / 7511.310.64.6
Mar17° / 11°669.811.75.8
Apr20° / 13°589.212.96.5
May24° / 16°36613.97.8
Jun28° / 20°102.214.57.7
Jul31° / 23°20.514.36.3
Aug31° / 24°112.213.45.7
Sep28° / 22°416.812.36.6
Oct25° / 18°598.9117.2
Nov20° / 14°9012.4106.1
Dec17° / 11°9112.29.55.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% 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 27%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28515
38416
48317
58119
68119
77921
87822
97723
107624
117525
127426
137327
147129
157129
167030
176931
186832
196832
206832
216733
226733
236733
246733
256832
266832
276733
286733
296832
306832

Chance of precipitation in September

Any precipitation

Annaba gets around 41 mm of rain over 6.8 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 23% and peaks near 30% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
114
215
315
416
516
617
718
818
919
1019
1119
1220
1320
1421
1522
1623
1723
1824
1925
2026
2127
2227
2328
2428
2529
2629
2729
2830
2930
3030

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 42% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
104264722
204274722
304284621
405294521
505304520
605304420
705314420
805314419
906324319
1006324318
1107324318
1208324317
1308324316
1409324316
15010324215
16011334214
17111334213
18112334213
19113334112
20114334111
21115344110
2211534409
2311635408
2411735397
2521736397
2621837386
2721838375
2821938365
2922039354
3022040344

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 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 6:04 AM to 6:28 AM, and sunset from 6:53 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:046:53
212.86:056:52
312.76:056:50
412.76:066:49
512.76:076:47
612.66:086:46
712.66:096:44
812.66:106:43
912.56:106:41
1012.56:116:40
1112.46:126:38
1212.46:136:37
1312.46:146:35
1412.36:156:33
1512.36:156:32
1612.26:166:30
1712.26:176:29
1812.26:186:27
1912.16:196:25
2012.16:206:24
2112.06:206:22
2212.06:216:21
2311.96:226:19
2411.96:236:18
2511.96:246:16
2611.86:256:14
2711.86:266:13
2811.76:266:11
2911.76:276:10
3011.76:286:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.95 kWh/m².

For context, solar energy here swings from a low near 2.13 kWh/m² to a high of 7.43 kWh/m² in July across the year — September's 4.95 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.4Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.6Bright
254.5Bright
264.5Bright
274.4Bright
284.4Bright
294.4Bright
304.3Bright
Planning a trip in September

Hazard calendar for Annaba

In seasonPeak

In September, Annaba sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Annaba's rainy season runs September–April, when most of the year's rain falls.

Annaba sees seasonal dust haze (June), heaviest in June.

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

Is September a good time to visit Annaba?

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

6.6
Sightseeing
4th-best month of the year
7.6
Beach & pool
4th-best month of the year

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

What to pack for Annaba in September

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

In September, Annaba sees daytime highs around 28°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Annaba 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 offshore is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 31 to Nov 17 — about 5.6 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Bracing
Mar15Cool
Apr16Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Annaba 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 Annaba peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 15UV 9Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr6High
May7High
Jun8Very high
Jul9Very high
Aug7High
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Annaba 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 Annaba is worst in August — around 47 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (May, 24 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateAug 1645 µg/m³May 2224 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb29Moderate
Mar29Moderate
Apr30Moderate
May24Moderate
Jun25Moderate
Jul31Moderate
Aug47Poor
Sep27Moderate
Oct27Moderate
Nov26Moderate
Dec29Moderate
Location & terrain

Where is Annaba?

Annaba sits at 36.9°N, 7.8°E, 5 m above sea level, in Algeria. The nearest listed city is Sidi Amar, 10 km away.

Topography around Annaba

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

Within 3 km, the terrain around Annaba has only modest variations in elevation — a maximum elevation change of 195 m around an average of 10 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,001 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,397 m.

The land around Annaba is covered by water (49%) and artificial surfaces (37%) within 3 km, water (48%) and trees (22%) within 16 km, and water (36%) and trees (25%) within 80 km.

3 km
195 m
16 km
1,001 m
80 km
1,397 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Sidi Amar 10 km · El Hadjar 11 km · Ahmed Bel Hadj 18 km · Ben Mehidi 19 km · Besbes 23 km · Drean 24 km · Berrahal 29 km · Héliopolis 53 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 Annaba (36.9°, 7.7667°, elevation 5 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).