Mareth weather in September

In September, Mareth sees average daytime highs of 32°C and overnight lows near 23°C, with 17 mm of rain across 2.6 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 30°C by the end. The sky is clear or mostly clear about 74% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Mareth's 4th-clearest and 10th-windiest month. For the whole year in context, see Mareth's year-round climate.

Daytime high
32°
4th warmest
Overnight low
23°
10th coldest
Rainfall
17 mm
2.6 wet days
Daylight
12 h 12 min
6:07 AM – 6:19 PM
Cloud cover
27%
4th clearest
Wind
13 km/h
10th windiest
Solar energy
5.67 kWh/m²
Travel score
5.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 33°C in the first days to 30°C by the end.

A typical September day in Mareth reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 37°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°40°151015202530
Avg high (°C)Avg low (°C)
13424
23424
33424
43324
53324
63323
73323
83323
93323
103323
113323
123223
133223
143223
153223
163223
173222
183222
193222
203122
213122
223122
233122
243122
253122
263021
273021
283021
293021
303021

How September really feels in Mareth

Once humidity and wind are folded in, September averages 17 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
17
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.

Mareth weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan16° / 163.1106.3
Feb18° / 142.710.87.1
Mar21° / 11°182.611.78.0
Apr24° / 14°112.112.88.7
May28° / 18°51.313.77.6
Jun32° / 21°10.314.25.3
Jul35° / 24°00.1143.6
Aug35° / 25°20.513.23.4
Sep32° / 23°172.612.25.1
Oct28° / 19°21311.27.4
Nov22° / 13°14310.38.2
Dec17° / 183.19.87.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 74% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1937
2937
3928
4928
5919
6919
79010
89010
99010
109010
118812
128812
138812
148713
158713
168515
178515
188515
198317
208317
218317
228119
238119
248020
258020
267822
277822
287822
297723
307822

Chance of precipitation in September

Any precipitation

Mareth gets around 17 mm of rain over 2.6 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 8% and peaks near 12% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
15
25
35
46
56
67
77
87
97
107
117
127
137
147
158
168
178
188
199
209
219
2210
2310
2411
2511
2611
2711
2812
2912
3012

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1813243816
2714243816
3714243717
4715243617
5716243518
6716243518
7717243418
8817243318
9817243318
10917243218
11918243217
121018243217
131118243216
141118243215
151218243214
161218253213
171218253212
181317263311
191317263311
201317273310
21141728339
22141728338
23141729328
24151729327
25151829327
26151829316
27161829316
28161929306
29171929295
30182029285

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:57 AM to 6:17 AM, and sunset from 6:41 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:576:41
212.75:576:39
312.75:586:38
412.65:596:36
512.65:596:35
612.66:006:34
712.56:016:32
812.56:016:31
912.56:026:29
1012.46:036:28
1112.46:046:27
1212.36:046:25
1312.36:056:24
1412.36:066:22
1512.26:066:21
1612.26:076:19
1712.26:086:18
1812.16:086:16
1912.16:096:15
2012.16:106:14
2112.06:116:12
2212.06:116:11
2312.06:126:09
2411.96:136:08
2511.96:136:06
2611.86:146:05
2711.86:156:04
2811.86:166:02
2911.76:166:01
3011.76:175:59

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.67 kWh/m².

For context, solar energy here swings from a low near 2.95 kWh/m² to a high of 7.75 kWh/m² in July across the year — September's 5.67 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.0Intense
86.0Intense
96.0Bright
105.9Bright
115.9Bright
125.9Bright
135.8Bright
145.8Bright
155.7Bright
165.7Bright
175.7Bright
185.6Bright
195.5Bright
205.5Bright
215.5Bright
225.4Bright
235.4Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.0Bright
Planning a trip in September

Hazard calendar for Mareth

In seasonPeak

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

Mareth sees seasonal dust haze (April–June), heaviest in April.

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

Is September a good time to visit Mareth?

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

5.1
Sightseeing
10th-best month of the year
8.1
Beach & pool
4th-best month of the year

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

What to pack for Mareth in September

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

In September, Mareth sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Mareth in September

The nearest coast averages about 28°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 30 km away) is warmest in August at about 29°C and coldest in February near 14°C.

It's comfortable for a long swim from May 8 to Nov 26 — about 6.7 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar15Cool
Apr18Cool
May21Refreshing
Jun24Warm
Jul27Warm
Aug29Tropical
Sep28Warm
Oct25Warm
Nov22Refreshing
Dec17Cool

UV index in Mareth in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mareth peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 21UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr6High
May7High
Jun11Extreme
Jul10Very high
Aug9Very high
Sep8Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Mareth 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 Mareth is worst in January — around 40 µg/m³ PM2.5 (poor), about 3.5× the cleanest month (July, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateJan 1739 µg/m³Jul 2212 µg/m³
PM2.5 (µg/m³)Level
Jan40Poor
Feb33Moderate
Mar34Moderate
Apr29Moderate
May21Moderate
Jun16Moderate
Jul12Good
Aug12Moderate
Sep16Moderate
Oct22Moderate
Nov30Moderate
Dec32Moderate
Location & terrain

Where is Mareth?

Mareth sits at 33.6°N, 10.3°E, 51 m above sea level, in Tunisia. The nearest listed city is Teboulbou, 30 km away.

AjimMétouia

Topography around Mareth

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

Within 3 km, the terrain around Mareth has only modest variations in elevation — a maximum elevation change of 37 m around an average of 50 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 355 m; within 80 km, large variations in elevation — a maximum elevation change of 684 m.

The land around Mareth is covered by cropland (47%) within 3 km, bare terrain (34%) and grassland (31%) within 16 km, and bare terrain (54%) and water (28%) within 80 km.

3 km
37 m
16 km
355 m
80 km
684 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Teboulbou 30 km · Matmata 30 km · Gabes 34 km · Chenini Nahal 35 km · Medenine 36 km · Rhennouch 41 km · Ajim 45 km · Métouia 46 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 Mareth (33.6179°, 10.2854°, elevation 51 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).