Alcoy weather in September

In September, Alcoy sees average daytime highs of 27°C and overnight lows near 16°C, with 66 mm of rain across 8.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 25°C by the end. The sky is clear or mostly clear about 46% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Alcoy's 6th-clearest and 10th-windiest month. For the whole year in context, see Alcoy's year-round climate.

Daytime high
27°
4th warmest
Overnight low
16°
10th coldest
Rainfall
66 mm
8.6 wet days
Daylight
12 h 12 min
6:49 AM – 7:04 PM
Cloud cover
47%
6th clearest
Wind
7 km/h
10th windiest
Solar energy
4.99 kWh/m²
Travel score
6.9
out of 10

Alcoy is innhabited place in Alcoy, Spain.

Founded
1256

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 29°C in the first days to 25°C by the end.

A typical September day in Alcoy reaches about 27°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12918
22918
32918
42818
52818
62818
72817
82817
92817
102717
112717
122717
132717
142716
152716
162616
172616
182616
192616
202616
212615
222515
232515
242515
252515
262515
272515
282514
292414
302414

Alcoy weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan13° / 425.60.59.64.4
Feb15° / 3760.410.54.9
Mar17° / 496.80.111.76.1
Apr19° / 5880136.6
May23° / 12°457014.17.5
Jun28° / 16°233.8014.77.3
Jul31° / 19°82014.46.0
Aug31° / 19°214.8013.55.6
Sep27° / 16°668.6012.36.9
Oct22° / 12°567.60117.2
Nov17° / 517.20.19.95.9
Dec14° / 416.10.39.34.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17327
27228
37228
47129
57129
67030
77030
86931
96931
106832
116931
126931
136931
146832
156733
166634
176634
186535
196436
206436
216238
226238
236139
246139
256139
266139
276139
286139
296139
306238

Chance of precipitation in September

Any precipitation

Alcoy gets around 66 mm of rain over 8.6 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
125
225
325
425
525
625
725
825
925
1025
1125
1225
1325
1425
1525
1626
1726
1827
1928
2028
2129
2230
2330
2430
2530
2630
2730
2829
2929
3028

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
115244021
216244020
317253919
418253818
520253717
621263716
722263616
824263515
925273414
1027273313
1128273312
1229283211
1330283210
143128319
153229318
163329307
173430307
183530296
193530296
203631285
213731285
223732274
233832264
243933253
254033243
264134232
274234222
284335212
294435201
304535191

Wind in September

Winds average 7 km/h in September.

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 54 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over September. Sunrise moves from 6:35 AM to 7:02 AM, and sunset from 7:28 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:357:28
212.86:367:27
312.86:377:25
412.86:387:23
512.76:397:22
612.76:407:20
712.66:417:18
812.66:417:17
912.56:427:15
1012.56:437:14
1112.56:447:12
1212.46:457:10
1312.46:467:09
1412.36:477:07
1512.36:487:05
1612.26:497:04
1712.26:507:02
1812.26:517:00
1912.16:526:59
2012.16:526:57
2112.06:536:55
2212.06:546:54
2311.96:556:52
2411.96:566:50
2511.96:576:49
2611.86:586:47
2711.86:596:45
2811.77:006:44
2911.77:016:42
3011.67:026:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.99 kWh/m².

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 7.46 kWh/m² in June across the year — September's 4.99 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.2Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.6Bright
254.6Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Alcoy?

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

6.9
Sightseeing
4th-best month of the year
7.0
Beach & pool
4th-best month of the year

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

What to pack for Alcoy in September

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

In September, Alcoy sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Alcoy 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 at the nearest coast (about 38 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from May 31 to Nov 4 — about 5.2 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar15Bracing
Apr16Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Alcoy 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 Alcoy peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 highVery highHighModerateLowJul 15UV 10Dec 18UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr8Very high
May7High
Jun9Very high
Jul10Extreme
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low
Location & terrain

Where is Alcoy?

Alcoy sits at 38.7°N, 0.5°W, 554 m above sea level, in Spain. The nearest listed city is Ibi, 12 km away.

Topography around Alcoy

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

Within 3 km, the terrain around Alcoy has large variations in elevation — a maximum elevation change of 655 m around an average of 672 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,194 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,544 m.

The land around Alcoy is covered by trees (34%), grassland (25%) and artificial surfaces (20%) within 3 km, trees (45%) and grassland (27%) within 16 km, and water (32%) and trees (25%) within 80 km.

3 km
655 m
16 km
1,194 m
80 km
1,544 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ibi 12 km · Ontinyent 17 km · Villajoyosa 30 km · El Campello 31 km · la Nucia 32 km · Xàtiva 32 km · Mutxamel 32 km · Sant Joan d'Alacant 34 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 Alcoy (38.7054°, -0.4743°, elevation 554 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).