Asturias, Spain
Siero
Siero is a town in Asturias, Spain. It has a population of about 53,049 (2025). The climate is classified as oceanic (Köppen Cfb), with rain spread through the year and no real dry season.
Now14°C
Best timeJul–Sep
Population53,049
Local time21:44
43.39° N, 5.66° WElevation 218 mUTC+2 · Central European Summer Time
Postal codes33510, 33519October: high / low20° / 10°
Rain this month132mm
Best timeJul–Sep
Best: Jul–Sep. Warmth, sunshine and dry days, month by month.
Siero at a glance
Sunrise · sunset08:45 · 19:3010 h 45 min of daylightThe moon tonightWaxing gibbous87% · Moonrise 17:57Next holiday2 NovemberAll Saints' DayNext eclipse21 Feb 2027Penumbral lunar eclipse
Best time to visitJul–Sep
The months with the highest weather score
Warmest month24°C
Average high in August
Coolest month4°C
Average low in January
Wettest monthNovember
144 mm of rain
Driest monthJuly
56 mm of rain
Monuments nearby10+
5 of them World Heritage
Weather in Siero
Now and the next ten days. The 14 and 30-day outlooks are one click away.
14°C
Today hour by hourCloudy · wind 16 km/h · humidity 79%
Today22 Oct19°11°1.3 mm
Fri23 Oct18°10°2.1 mm
Sat24 Oct19°5°
Sun25 Oct23°11°
Mon26 Oct22°7°
Tue27 Oct22°8°
Wed28 Oct20°13°1 mm
Thu29 Oct23°10°
Fri30 Oct24°11°
Sat31 Oct25°10°3.4 mm
When to go to Siero
Each month's weather score (warmth, sun, dry days) with its temperatures and rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score | 35 | 40 | 49 | 55 | 65 | 70 | 76 | 73 | 76 | 65 | 48 | 39 |
| High | 13° | 13° | 15° | 17° | 19° | 21° | 23° | 24° | 23° | 20° | 16° | 14° |
| Low | 4° | 4° | 6° | 7° | 10° | 13° | 15° | 15° | 13° | 10° | 7° | 5° |
| Rain (mm) | 111 | 104 | 104 | 125 | 104 | 74 | 56 | 69 | 83 | 132 | 144 | 132 |
| Wet days | 16 | 13 | 13 | 14 | 12 | 10 | 8 | 9 | 9 | 13 | 17 | 14 |
What's on in Siero
Concerts, football matches, the public holidays ahead and the town's festivals through the year.
Monuments and museums in Siero
3 km
Palace of Valdesoto2.2 km
palace of the Tower of Celles
UNESCO14 km
San Julián de los PradosBuilt 801
UNESCO15 km
Church of San Tirso, OviedoBuilt 801
15 km
Metropolitan Cathedral Basilica of the Holy Saviour, OviedoBuilt 701
UNESCO15 km
Cámara SantaBuilt 900Museum2 km
Muséu El Taller de Títeres
Museum14 km
Fernando Alonso Sports ComplexBuilt 2011Outdoors around Siero
Hiking routes from the town, and what there is to do within 15 km: huts, viewpoints, climbing, camping, ski areas and dive sites.
Mirador TiñanaViewpoints
0.2 kmÁrea autocaravanas de NavaCamp sites
0.6 kmEl RokoClimbing
1 kmCamping DevaCamp sites
1.4 kmMirador Santa MarinaViewpoints
1.5 kmNúcleo Zoológico el BosqueZoos
1.7 kmDive site
16 kmNature around Siero
Wildlife in October
The birds and mammals of Spain seen most this month, compared with the rest of their year.
The sky over Siero
Earthquakes around Siero
The last 30 days within 300 km, and the record since 1950.
Last 30 days0magnitude 2.5+ within 300 kmSince 19506magnitude 5+ within 150 kmSignificant earthquakes on record1within 300 km
Strongest nearby since 1950
5.4Becerreá 4 km ↖1997 · 137 km
5.3Becerreá 5 km ↗1997 · 131 km
5.2Navia de Suarna 6 km ←1979 · 124 km
5.1Becerreá 0 km →1997 · 135 km
Towns and villages around Siero
Each with its own page: weather, climate and the best time to visit.
Rebollar0.8 kmPosada1.1 kmNegales1.5 kmLa Parte1.8 kmLa Carrera1.9 kmFerrera2 kmLugarín2.2 kmVigil2.2 kmVega de Poja2.6 kmEspiniella2.8 kmTiroco de Abajo2.9 kmTiroco de Arriba3 kmGijún3.1 kmLeceñes3.1 kmMuncó3.1 kmCelles3.2 kmBerrón3.4 kmCastiello3.4 kmNoreña3.5 kmAramil3.7 kmValdesoto3.7 kmOrviz3.9 kmMarcenado3.9 kmTaraña4 kmCareses4 kmAnés4 kmPumarín4.1 kmOrial4.3 kmOrdiales4.4 kmArgüelles4.4 kmLa Felguera4.5 kmCoto4.6 kmMolledo4.7 kmMuñó4.7 kmAveno4.8 kmOtero4.9 kmSan Pedro4.9 kmLamuño5 kmVallina5.2 kmHevia5.2 kmAramil de Arriba5.2 kmCamino5.3 kmCarbayín5.3 kmPañeda Nueva5.3 kmAcebal5.4 kmAtrás5.5 kmCalabaza5.7 kmVillanueva5.8 kmCollao5.8 kmArenas5.8 kmTraspando5.9 kmCandín5.9 kmCollada5.9 kmCampo6 kmCorros6.1 kmPedrera6.1 kmCaballeros6.2 kmCeñal6.3 kmMoñeca6.3 kmFozana6.3 kmFueyo6.3 kmCuclillos6.3 kmSolad6.4 kmFonciello6.4 kmRaíz de Arriba6.5 kmCollado6.5 kmFeleches6.5 kmCoto6.6 kmPañeda Vieja6.7 kmMonte6.8 kmSaús6.8 kmEl Fresno6.9 kmZalci6.9 kmMiyares6.9 kmMagdalena7 kmLlovera7 kmVaré7 kmLa Rimada7 kmRoza7.1 kmMeres7.1 km
Siero from above
Around Siero37 places to see, do and reach nearby
NoraNature19 kmCaudalNature19 kmAboñoNature16 kmEmbalse de TrasonaNature24 kmSan Andrés de los Tacones reservoirNature14 kmAllerNature24 kmSan Lorenzo Beach, AsturiasNature17 kmBeach of La ÑoraNature18 kmEl GamoniteiruMountain31 kmAlto de L'AngliruMountain30 kmMonsacroMountain24 kmLes PraeresMountain16 kmMonte NarancoMountain16 kmLloe PeakMountain28 kmDive siteDive site16 kmPalace of ValdesotoMonument3.0 kmpalace of the Tower of CellesMonument2.2 kmSan Julián de los PradosMonument14 kmChurch of San Tirso, OviedoMonument15 kmMetropolitan Cathedral Basilica of the Holy Saviour, OviedoMonument15 kmCámara SantaMonument15 kmChurch of San Salvador de ValdediósMonument14 kmMonasterio de Santa María de ValdediósMonument14 kmMuséu El Taller de TíteresMuseum2.0 kmFernando Alonso Sports ComplexMuseum14 kmMining Museum of AsturiasMuseum12 kmCider MuseumMuseum13 kmMuseum of the Siderurgy of AsturiasMuseum9.5 kmPola de Siero / La Pola SieroStation0.5 kmLa CarreraStation1.1 kmNoreñaStation3.3 kmOviedoPlace15 kmGijónPlace16 kmMieresPlace18 kmVillaviciosaPlace21 kmCorvera de AsturiasPlace24 kmLlaneraPlace16 km
Postal codes
3351033519
Getting to Siero
Asturias AirportOVD
36 kmLeón AirportLEN
89 kmSeve Ballesteros-Santander AirportSDR
149 kmPola de Siero / La Pola SieroRailway station
0.5 kmLa CarreraRailway station
1.1 kmNoreñaRailway station
3.3 kmPlaces near Siero
Places with a climate like Siero
Matched month by month on temperature, rain and sunshine.
Frequently asked questions
When is the best time to visit Siero?
Based on 30-year climate normals, July, August and September offer the best balance of comfortable temperatures, low rainfall and sunshine in Siero.
What is the hottest month in Siero?
August is the warmest month, with average highs of 24°C and lows of 15°C.
What is the coldest month in Siero?
January is the coldest month, with average highs of 13°C and lows of 4°C.
What is the rainiest month in Siero?
November is the wettest month with about 144 mm of precipitation on 17 wet days.
What is the postal code of Siero?
Siero has 2 postal codes: 33510, 33519.