Mieres weather in September

In September, Mieres sees average daytime highs of 20°C and overnight lows near 11°C, with 84 mm of rain across 13.2 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 12th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels dry.

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 Mieres's 1st-clearest and 9th-windiest month. For the whole year in context, see Mieres's year-round climate.

Daytime high
20°
3rd warmest
Overnight low
11°
10th coldest
Rainfall
84 mm
13.2 wet days
Daylight
12 h 18 min
7:09 AM – 7:26 PM
Cloud cover
61%
1st clearest
Wind
6 km/h
9th windiest
Solar energy
4.33 kWh/m²
Travel score
5.7
out of 10

Mieres is capital of Mieres council, Asturias, Spain.

Air quality
Good
PM10 23.3 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 18°C by the end.

A typical September day in Mieres reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 24°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12112
22112
32112
42112
52112
62012
72012
82011
92011
102011
112011
122011
132011
142011
152011
162011
171911
181911
191911
201910
211910
221910
231910
241910
251910
261910
271810
281810
291810
301810

How September really feels in Mieres

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.

Mieres weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 10413.94.79.21.7
Feb10° / 90125.210.22.1
Mar12° / 9913.73.411.63.1
Apr14° / 11716.5213.23.3
May16° / 12417.10.514.54.2
Jun19° / 11°10114.7015.15.3
Jul21° / 13°8514.1014.95.8
Aug22° / 13°9014.4013.85.9
Sep20° / 11°8413.2012.35.7
Oct16° / 10913.80.210.84.7
Nov12° / 12215.21.69.52.8
Dec10° / 10213.53.48.92.0

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 17% of September, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24258
34258
44456
54456
64555
74555
84555
94456
104456
114357
124456
134456
144357
154258
164258
174060
184060
194060
203961
213961
223961
233961
243862
253862
263862
273862
283763
293763
303763

Chance of precipitation in September

Any precipitation

Mieres gets around 84 mm of rain over 13.2 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 44% and peaks near 47% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
144
243
343
442
542
642
742
842
942
1042
1143
1243
1344
1444
1545
1645
1746
1846
1946
2046
2147
2247
2347
2447
2546
2646
2746
2846
2945
3045

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 60% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
1414217
2424216
3434215
4444214
5454213
6464212
7484211
8494110
950419
1051409
1153398
1253398
1355387
1457376
1558366
1660355
1762344
1863334
1965323
2066313
2168302
2269292
2370282
2472271
2573261
2674251
2775241
2876231
2977221
3079201

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 7:25 AM, and sunset from 7:54 PM to 7:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:527:54
213.06:537:52
312.96:547:50
412.96:557:48
512.86:567:47
612.86:577:45
712.76:587:43
812.77:007:41
912.67:017:39
1012.67:027:37
1112.57:037:36
1212.57:047:34
1312.47:057:32
1412.47:067:30
1512.37:087:28
1612.37:097:26
1712.27:107:24
1812.27:117:22
1912.17:127:20
2012.17:137:19
2112.07:147:17
2212.07:167:15
2311.97:177:13
2411.97:187:11
2511.87:197:09
2611.87:207:07
2711.77:217:05
2811.77:237:04
2911.67:247:02
3011.67:257:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.33 kWh/m².

For context, solar energy here swings from a low near 1.45 kWh/m² to a high of 6.18 kWh/m² in July across the year — September's 4.33 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Moderate
234.0Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.7Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Mieres?

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

5.7
Sightseeing
3rd-best month of the year
2.7
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Mieres for sightseeing.

What to pack for Mieres in September

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

In September, Mieres sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Mieres 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 at the nearest coast (about 43 km away) 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 Mieres in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mieres peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec2Low

Air quality in Mieres 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 Mieres is worst in October — around 17 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (July, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodOct 1616 µg/m³Jul 187 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb12Good
Mar14Moderate
Apr13Moderate
May8Good
Jun8Good
Jul7Good
Aug8Good
Sep8Good
Oct17Moderate
Nov7Good
Dec9Good
Location & terrain

Where is Mieres?

Mieres sits at 43.3°N, 5.8°W, 367 m above sea level, in Spain. The nearest listed city is Sama, 8.0 km away.

Topography around Mieres

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

Within 3 km, the terrain around Mieres has large variations in elevation — a maximum elevation change of 706 m around an average of 443 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,674 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,590 m.

The land around Mieres is covered by trees (69%) and grassland (21%) within 3 km, trees (64%) and grassland (31%) within 16 km, and trees (41%), grassland (32%) and water (24%) within 80 km.

3 km
706 m
16 km
1,674 m
80 km
2,590 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sama 8.0 km · La Felguera 9.0 km · Oviedo 14 km · Gijón 33 km · Natahoyo 33 km · Corvera de Asturias 33 km · Avilés 36 km · Villaquilambre 69 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 Mieres (43.25°, -5.7667°, elevation 367 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).