Avilés weather in September

In September, Avilés sees average daytime highs of 20°C and overnight lows near 14°C, with 80 mm of rain across 12.2 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 19°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Avilés's 1st-clearest and 9th-windiest month. For the whole year in context, see Avilés's year-round climate.

Daytime high
20°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
80 mm
12.2 wet days
Daylight
12 h 18 min
7:09 AM – 7:27 PM
Cloud cover
61%
1st clearest
Wind
10 km/h
9th windiest
Solar energy
4.37 kWh/m²
Travel score
5.9
out of 10

Avilés is port city in northern Spain.

Air quality
Good
PM2.5 7.4 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 21°C in the first days to 19°C by the end.

A typical September day in Avilés reaches about 20°C in the afternoon and slips back to 14°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, September runs about 2°C cooler than August and about 2°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12115
22115
32115
42115
52115
62115
72115
82115
92115
102115
112114
122114
132114
142014
152014
162014
172014
182014
192014
202014
212014
222014
232014
242013
252013
262013
272013
281913
291913
301913

Avilés weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan12° / 11614.30.69.12.8
Feb12° / 9612.60.610.23.0
Mar14° / 10413.90.211.63.7
Apr15° / 11715.1013.23.8
May17° / 11°11415.2014.54.7
Jun19° / 14°8112.3015.25.6
Jul21° / 15°6511.3014.96.2
Aug22° / 16°7512.3013.86.3
Sep20° / 14°8012.2012.35.9
Oct18° / 12°12014.4010.85.2
Nov15° / 14415.709.53.7
Dec13° / 11813.70.28.83.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
24258
34258
44357
54357
64456
74456
84555
94555
104555
114555
124456
134555
144456
154456
164456
174456
184357
194357
204357
214159
224159
234159
244159
254159
264159
274060
284060
294060
304159

Chance of precipitation in September

Any precipitation

Avilés gets around 80 mm of rain over 12.2 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 42% and peaks near 46% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
138
238
338
438
538
638
738
838
939
1039
1140
1240
1341
1441
1542
1642
1743
1843
1943
2044
2144
2244
2344
2445
2545
2645
2746
2846
2946
3046

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 (%)
11440406
21540395
31640395
41740384
51840384
61940374
72040363
82140363
92240353
102439343
112539343
122639333
132739322
142839312
152939302
163039292
173139281
183239271
193440261
203540241
213541231
223641221
233742211
243842200
253942190
264042180
274142170
284341160
294441150
304640140

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 6:52 AM to 7:26 AM, and sunset from 7:55 PM to 7:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:527:55
213.06:537:53
313.06:547:51
412.96:557:49
512.96:577:48
612.86:587:46
712.86:597:44
812.77:007:42
912.67:017:40
1012.67:027:38
1112.57:037:36
1212.57:057:34
1312.47:067:33
1412.47:077:31
1512.37:087:29
1612.37:097:27
1712.27:107:25
1812.27:127:23
1912.17:137:21
2012.17:147:19
2112.07:157:17
2212.07:167:15
2311.97:177:14
2411.97:197:12
2511.87:207:10
2611.87:217:08
2711.77:227:06
2811.77:237:04
2911.67:247:02
3011.67:267:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.37 kWh/m².

For context, solar energy here swings from a low near 1.43 kWh/m² to a high of 6.37 kWh/m² in June across the year — September's 4.37 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.1Bright
214.1Bright
224.0Bright
234.0Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Avilés?

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

5.9
Sightseeing
3rd-best month of the year
3.3
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Avilés for sightseeing.

What to pack for Avilés in September

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

In September, Avilés sees daytime highs around 20°C and nights near 14°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Avilés in September

The nearest coast averages about 20°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 21°C and coldest in March near 13°C.

It's comfortable for a long swim from Aug 4 to Aug 31 — about 0.9 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan13Bracing
Feb13Bracing
Mar13Bracing
Apr13Bracing
May15Bracing
Jun17Cool
Jul19Cool
Aug21Refreshing
Sep20Cool
Oct18Cool
Nov16Cool
Dec14Bracing

UV index in Avilés in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Avilés peaks around June 23 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Avilés?

Avilés sits at 43.6°N, 5.9°W, 26 m above sea level, in Spain. The nearest listed city is Corvera de Asturias, 4.0 km away.

Topography around Avilés

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

Within 3 km, the terrain around Avilés has only modest variations in elevation — a maximum elevation change of 141 m around an average of 50 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 648 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,396 m.

The land around Avilés is covered by grassland (36%), artificial surfaces (29%) and trees (28%) within 3 km, trees (32%), water (32%) and grassland (30%) within 16 km, and trees (36%), water (36%) and grassland (27%) within 80 km.

3 km
141 m
16 km
648 m
80 km
2,396 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Corvera de Asturias 4.0 km · Natahoyo 20 km · Gijón 21 km · Oviedo 23 km · La Felguera 33 km · Sama 35 km · Mieres 36 km · Villaquilambre 105 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 Avilés (43.5547°, -5.9248°, elevation 26 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).