Arcos de la Frontera weather in September

In September, Arcos de la Frontera sees average daytime highs of 29°C and overnight lows near 18°C, with 34 mm of rain across 4.5 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 31°C in the first days to 27°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 Arcos de la Frontera's 4th-clearest and 10th-windiest month. For the whole year in context, see Arcos de la Frontera's year-round climate.

Daytime high
29°
4th warmest
Overnight low
18°
10th coldest
Rainfall
34 mm
4.5 wet days
Daylight
12 h 12 min
7:11 AM – 7:24 PM
Cloud cover
33%
4th clearest
Wind
9 km/h
10th windiest
Solar energy
5.5 kWh/m²
Travel score
6.7
out of 10

Arcos de la Frontera is capital of Arcos de la Frontera Municipality, Spain.

Air quality
Good
PM10 25.6 µg/m³ · 2019

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 31°C in the first days to 27°C by the end.

A typical September day in Arcos de la Frontera reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 33°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13119
23119
33119
43119
53119
63119
73019
83019
93019
103019
113018
122918
132918
142918
152918
162918
172918
182818
192818
202817
212817
222817
232817
242717
252717
262717
272717
282717
292716
302716

How September really feels in Arcos de la Frontera

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.

Arcos de la Frontera 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
Jan16° / 738.19.85.2
Feb17° / 667.110.65.8
Mar19° / 10°747.911.76.7
Apr21° / 11°617.712.97.0
May25° / 14°39613.97.8
Jun29° / 18°91.714.56.9
Jul33° / 20°20.214.35.0
Aug33° / 20°40.713.44.9
Sep29° / 18°344.512.26.7
Oct24° / 15°848.3117.3
Nov19° / 11°877.9106.6
Dec16° / 1048.29.55.5

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 16% 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 (%)
18911
28812
38713
48713
58713
68515
78515
88515
98317
108317
118218
128119
138119
148020
157921
167921
177723
187723
197624
207525
217525
227426
237426
247327
257327
267228
277228
287228
297129
307129

Chance of precipitation in September

Any precipitation

Arcos de la Frontera gets around 34 mm of rain over 4.5 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 14% and peaks near 21% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
15
26
36
46
57
67
78
89
910
1011
1112
1213
1314
1414
1515
1616
1717
1817
1918
2019
2119
2220
2320
2421
2521
2621
2720
2820
2920
3020

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 37% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11338436
21438426
31538416
41638416
51738406
61838395
71838385
81937385
92037375
102137375
112236375
122335366
132335375
142434375
152533375
162533375
172532375
182632375
192632385
202631384
212731384
222731374
232832374
242832364
252933363
262933353
273034343
283035322
293136312
303236302

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 6:58 AM to 7:22 AM, and sunset from 7:48 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:587:48
212.86:597:46
312.77:007:45
412.77:017:43
512.77:027:42
612.67:027:40
712.67:037:39
812.57:047:37
912.57:057:35
1012.57:067:34
1112.47:077:32
1212.47:077:31
1312.47:087:29
1412.37:097:28
1512.37:107:26
1612.27:117:24
1712.27:117:23
1812.27:127:21
1912.17:137:20
2012.17:147:18
2112.07:157:17
2212.07:167:15
2311.97:167:13
2411.97:177:12
2511.97:187:10
2611.87:197:09
2711.87:207:07
2811.77:217:06
2911.77:227:04
3011.77:227:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.5 kWh/m².

For context, solar energy here swings from a low near 2.31 kWh/m² to a high of 7.91 kWh/m² in July across the year — September's 5.5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.3Intense
36.3Intense
46.2Intense
56.2Intense
66.1Intense
76.0Intense
86.0Bright
95.9Bright
105.9Bright
115.8Bright
125.7Bright
135.7Bright
145.6Bright
155.5Bright
165.5Bright
175.4Bright
185.3Bright
195.3Bright
205.2Bright
215.2Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.8Bright
294.8Bright
304.7Bright
Planning a trip in September

Hazard calendar for Arcos de la Frontera

In seasonPeak

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

Arcos de la Frontera's rainy season runs October–April, when most of the year's rain falls.

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

Is September a good time to visit Arcos de la Frontera?

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

6.7
Sightseeing
5th-best month of the year
8.1
Beach & pool
4th-best month of the year

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

What to pack for Arcos de la Frontera in September

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

In September, Arcos de la Frontera sees daytime highs around 29°C and nights near 18°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near Arcos de la Frontera 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 50 km away) is warmest in August at about 23°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 14 to Oct 21 — about 4.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar16Cool
Apr17Cool
May18Cool
Jun20Refreshing
Jul22Refreshing
Aug23Refreshing
Sep22Refreshing
Oct20Refreshing
Nov18Cool
Dec17Cool

UV index in Arcos de la Frontera 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 Arcos de la Frontera peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateVery highHighModerateJul 16UV 10Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar7High
Apr8Very high
May7Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep7High
Oct5High
Nov3Moderate
Dec2Moderate
Location & terrain

Where is Arcos de la Frontera?

Arcos de la Frontera sits at 36.8°N, 5.8°W, 144 m above sea level, in Spain. The nearest listed city is Las Cabezas de San Juan, 28 km away.

Topography around Arcos de la Frontera

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arcos de la Frontera.

Within 3 km, the terrain around Arcos de la Frontera has only modest variations in elevation — a maximum elevation change of 166 m around an average of 101 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 427 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,887 m.

The land around Arcos de la Frontera is covered by cropland (39%) and grassland (26%) within 3 km, cropland (59%) within 16 km, and cropland (28%), trees (23%) and water (20%) within 80 km.

3 km
166 m
16 km
427 m
80 km
1,887 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Las Cabezas de San Juan 28 km · Jerez de la Frontera 30 km · Lebrija 30 km · Ubrique 33 km · El Puerto de Santa María 42 km · Puerto Real 42 km · San Fernando 46 km · Los Palacios y Villafranca 47 km

Spain travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$38,627
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 540
Religion
Roman Catholic 58%atheist 16%agnostic 11%non-believer 11%

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 Arcos de la Frontera (36.7507°, -5.8106°, elevation 144 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).