Siliana weather in September

In September, Siliana sees average daytime highs of 28°C and overnight lows near 17°C, with 46 mm of rain across 7.7 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 30°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 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 Siliana's 4th-clearest and 11th-windiest month. For the whole year in context, see Siliana's year-round climate.

Daytime high
28°
4th warmest
Overnight low
17°
10th coldest
Rainfall
46 mm
7.7 wet days
Daylight
12 h 12 min
6:10 AM – 6:24 PM
Cloud cover
41%
4th clearest
Wind
9 km/h
11th windiest
Solar energy
5.19 kWh/m²
Travel score
6.4
out of 10

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 26°C by the end.

A typical September day in Siliana reaches about 28°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 33°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)
13119
23119
33019
43019
53018
63018
73018
82918
92918
102918
112918
122918
132918
142817
152817
162817
172817
182817
192817
202717
212717
222716
232716
242716
252716
262616
272616
282616
292615
302615

How September really feels in Siliana

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.

Siliana weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 457.90.59.83.6
Feb13° / 388.20.510.63.9
Mar16° / 528.90.111.75.3
Apr20° / 508.70.112.96.5
May24° / 13°397.1013.97.6
Jun30° / 17°244.5014.46.3
Jul33° / 20°92.9014.24.5
Aug33° / 20°214.8013.44.3
Sep28° / 17°467.7012.26.4
Oct24° / 13°386.9011.17.5
Nov18° / 366.2010.16.3
Dec14° / 3870.29.64.3

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 21% 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 (%)
18416
28317
38317
48218
58119
68020
78020
87921
97822
107723
117723
127624
137525
147426
157327
167228
177129
187030
197030
206832
216832
226832
236832
246733
256733
266733
276733
286634
296634
306634

Chance of precipitation in September

Any precipitation

Siliana gets around 46 mm of rain over 7.7 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 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
123
224
324
425
525
625
725
825
925
1025
1125
1225
1325
1425
1525
1625
1725
1825
1925
2026
2126
2226
2326
2426
2526
2627
2727
2827
2927
3027

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 (%)
12942273
22842273
32842273
42741283
52741283
62741284
72741294
82741294
92741284
102840284
112840284
122940284
133039273
143039273
153139273
163139263
173239263
183240253
193340252
203440242
213540232
223540232
233640222
243839221
253939211
264038201
274138191
284337191
294437181
304636171

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
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 5:58 AM to 6:22 AM, and sunset from 6:46 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:586:46
212.85:596:45
312.76:006:43
412.76:016:42
512.76:016:40
612.66:026:39
712.66:036:37
812.56:046:36
912.56:056:34
1012.56:056:33
1112.46:066:31
1212.46:076:30
1312.36:086:28
1412.36:086:27
1512.36:096:25
1612.26:106:24
1712.26:116:22
1812.16:126:21
1912.16:126:19
2012.16:136:17
2112.06:146:16
2212.06:156:14
2312.06:166:13
2411.96:176:11
2511.96:176:10
2611.86:186:08
2711.86:196:07
2811.86:206:05
2911.76:216:04
3011.76:226:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.19 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 7.6 kWh/m² in July across the year — September's 5.19 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Siliana

In seasonPeak

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

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

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

Is September a good time to visit Siliana?

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

6.4
Sightseeing
4th-best month of the year
7.4
Beach & pool
4th-best month of the year

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

What to pack for Siliana in September

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

In September, Siliana sees daytime highs around 28°C and nights near 17°C. Pack light clothes. Worth having: sun protection. About 8 days see rain.

light clothessun protection

UV index in Siliana 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 Siliana peaks around July 16 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highVery highHighModerateJul 16UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr5Moderate
May8Very high
Jun9Very high
Jul10Extreme
Aug8Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Siliana 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 Siliana is worst in September — around 24 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1724 µg/m³Dec 2118 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar21Moderate
Apr24Moderate
May22Moderate
Jun22Moderate
Jul21Moderate
Aug22Moderate
Sep24Moderate
Oct22Moderate
Nov20Moderate
Dec17Moderate
Location & terrain

Where is Siliana?

Siliana sits at 36.1°N, 9.4°E, 428 m above sea level, in Tunisia. The nearest listed city is Tabursuq, 43 km away.

DahmaniEl FahsEl KefMedjez el BabJendoubaBéjaTajerouine

Topography around Siliana

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

Within 3 km, the terrain around Siliana has only modest variations in elevation — a maximum elevation change of 73 m around an average of 431 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 723 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,360 m.

The land around Siliana is covered by cropland (74%) within 3 km, cropland (62%) and grassland (24%) within 16 km, and cropland (51%) and grassland (32%) within 80 km.

3 km
73 m
16 km
723 m
80 km
1,360 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Tabursuq 43 km · Dahmani 51 km · El Fahs 58 km · El Kef 61 km · Medjez el Bab 66 km · Jendouba 70 km · Béja 73 km · Tajerouine 77 km

Tunisia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$4,657
2025
Happiness
4.8 / 10
World Happiness, 2025
Safe drinking water
65%
of population, 2024
Homicide rate
4.7
per 100k, 2020
Road deaths
16.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 498
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 Siliana (36.085°, 9.3708°, elevation 428 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).