Sidi Slimane weather in September

In September, Sidi Slimane sees average daytime highs of 30°C and overnight lows near 18°C, with 17 mm of rain across 3 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 32°C in the first days to 29°C by the end. The sky is clear or mostly clear about 63% of the time in September, and the air most often feels humid.

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 Slimane's 4th-clearest and 12th-windiest month. For the whole year in context, see Sidi Slimane's year-round climate.

Daytime high
30°
4th warmest
Overnight low
18°
10th coldest
Rainfall
17 mm
3 wet days
Daylight
12 h 12 min
6:12 AM – 6:24 PM
Cloud cover
34%
4th clearest
Wind
7 km/h
12th windiest
Solar energy
5.56 kWh/m²
Travel score
6.0
out of 10

Sidi Slimane is city in Morocco.

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 32°C in the first days to 29°C by the end.

A typical September day in Sidi Slimane reaches about 30°C in the afternoon and slips back to 18°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 35°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13219
23219
33219
43219
53219
63119
73119
83119
93118
103118
113118
123118
133018
143018
153018
163018
173018
183018
193018
203018
212917
222917
232917
242917
252917
262917
272917
282917
292917
302917

How September really feels in Sidi Slimane

Once humidity and wind are folded in, September averages 5 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
5
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sidi Slimane 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 daysDaylight (hours)Travel score
Jan18° / 567.9106.3
Feb19° / 487.210.76.6
Mar22° / 10°496.911.77.3
Apr24° / 12°406.912.87.6
May27° / 14°265.113.87.3
Jun31° / 17°71.514.26.0
Jul33° / 19°10.214.14.7
Aug33° / 20°10.413.34.6
Sep30° / 18°17312.26.0
Oct27° / 15°516.311.17.2
Nov22° / 11°657.510.27.2
Dec19° / 587.59.86.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28713
38614
48515
58515
68416
78317
88218
98218
108119
118020
128020
137921
147822
157822
167723
177624
187624
197525
207525
217426
227426
237426
247525
257426
267426
277426
287426
297426
307426

Chance of precipitation in September

Any precipitation

Sidi Slimane gets around 17 mm of rain over 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 9% and peaks near 14% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
13
24
34
45
55
66
76
87
97
108
118
129
139
149
1510
1610
1710
1811
1911
2011
2112
2212
2313
2413
2513
2613
2713
2813
2914
3014

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 24% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111153341
211253331
311353321
411354311
521453310
621553300
721653290
821752290
931851280
1031851280
1131951270
1242050270
1342149260
1442249250
1542248250
1652348240
1752448230
1852448230
1962548220
2062548210
2162648200
2272648190
2372748180
2472748170
2582848160
2682848150
2792948140
2892948130
29102948130
30112948120

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 6:01 AM to 6:22 AM, and sunset from 6:46 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:016:46
212.76:026:45
312.76:026:43
412.66:036:42
512.66:046:40
612.66:056:39
712.56:056:37
812.56:066:36
912.56:076:35
1012.46:076:33
1112.46:086:32
1212.46:096:30
1312.36:106:29
1412.36:106:27
1512.26:116:26
1612.26:126:24
1712.26:126:23
1812.16:136:21
1912.16:146:20
2012.16:156:18
2112.06:156:17
2212.06:166:16
2312.06:176:14
2411.96:186:13
2511.96:186:11
2611.86:196:10
2711.86:206:08
2811.86:216:07
2911.76:216:05
3011.76:226:04

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.56 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 7.68 kWh/m² in July across the year — September's 5.56 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.2Intense
56.2Intense
66.1Intense
76.0Intense
86.0Bright
95.9Bright
105.9Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.6Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
Planning a trip in September

Hazard calendar for Sidi Slimane

In seasonPeak

None of Sidi Slimane'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 Slimane sees seasonal dust haze (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 Slimane?

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

6.0
Sightseeing
9th-best month of the year
8.3
Beach & pool
3rd-best month of the year

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

What to pack for Sidi Slimane in September

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

In September, Sidi Slimane sees daytime highs around 30°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 3 days see rain.

light clothessun protection

Sea temperature near Sidi Slimane in September

The nearest coast averages about 22°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 65 km away) is warmest in August at about 23°C and coldest in February near 17°C.

It's comfortable for a long swim from Jun 6 to Nov 5 — about 5 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb17Cool
Mar17Cool
Apr18Cool
May19Cool
Jun21Refreshing
Jul22Refreshing
Aug23Refreshing
Sep22Refreshing
Oct21Refreshing
Nov20Cool
Dec18Cool

UV index in Sidi Slimane 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 Sidi Slimane peaks around July 18 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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highVery highHighModerateJul 18UV 10Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb3Moderate
Mar7Very high
Apr8Very high
May8Very high
Jun9Very high
Jul11Extreme
Aug9Very high
Sep7High
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Sidi Slimane 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 Slimane is worst in January — around 38 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (June, 18 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 1737 µg/m³Jun 1519 µg/m³
PM2.5 (µg/m³)Level
Jan38Poor
Feb37Poor
Mar32Moderate
Apr27Moderate
May23Moderate
Jun18Moderate
Jul24Moderate
Aug22Moderate
Sep23Moderate
Oct31Moderate
Nov34Moderate
Dec37Poor
Location & terrain

Where is Sidi Slimane?

Sidi Slimane sits at 34.3°N, 5.9°W, 37 m above sea level, in Morocco. The nearest listed city is Sidi Kacem, 21 km away.

Topography around Sidi Slimane

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

Within 3 km, the terrain around Sidi Slimane has only modest variations in elevation — a maximum elevation change of 19 m around an average of 30 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 284 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,248 m.

The land around Sidi Slimane is covered by cropland (45%) and grassland (21%) within 3 km, cropland (62%) within 16 km, and cropland (53%) and grassland (24%) within 80 km.

3 km
19 m
16 km
284 m
80 km
1,248 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Sidi Kacem 21 km · Mechraa Bel Ksiri 34 km · Sidi Yahia El Gharb 35 km · Souk et Tnine Jorf el Mellah 46 km · Souk El Arbaa 47 km · Souq Larb’a al Gharb 47 km · Khemisset 51 km · Douar Toulal 52 km

Morocco travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 42% of US
price level, 2025
GDP per capita
$4,672
2025
Happiness
4.6 / 10
World Happiness, 2025
Safe drinking water
80%
of population, 2024
Homicide rate
1.7
per 100k, 2023
Road deaths
17
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 492
Religion
Muslim 99%other 1%

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 Slimane (34.2648°, -5.926°, elevation 37 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).