Castro-Urdiales weather in October

In October, Castro-Urdiales sees average daytime highs of 19°C and overnight lows near 15°C, with 103 mm of rain across 13.8 wet days and about 10.8 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°C by the end. The sky is clear or mostly clear about 25% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 10 h 06 min by month's end. Set against the rest of the year, October is Castro-Urdiales's 5th-clearest and 7th-windiest month. For the whole year in context, see Castro-Urdiales's year-round climate.

Daytime high
19°
5th warmest
Overnight low
15°
8th coldest
Rainfall
103 mm
13.8 wet days
Daylight
10 h 48 min
7:34 AM – 6:22 PM
Cloud cover
61%
5th clearest
Wind
15 km/h
7th windiest
Solar energy
2.85 kWh/m²
Travel score
5.5
out of 10

Castro-Urdiales is capital of Castro-Urdiales Municipality, Spain.

Air quality
Good
PM10 15.1 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 18°C by the end.

A typical October day in Castro-Urdiales reaches about 19°C in the afternoon and slips back to 15°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, October runs about 2°C cooler than September and about 4°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12016
22016
32016
42016
52016
62016
72016
81915
91915
101915
111915
121915
131915
141915
151915
161915
171915
181915
191915
201914
211814
221814
231814
241814
251814
261814
271814
281814
291814
301713
311713

Castro-Urdiales weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 119159.22.9
Feb12° / 10313.510.22.9
Mar14° / 10°9813.211.63.7
Apr15° / 11°8913.813.24.0
May17° / 13°6912.714.55.1
Jun20° / 16°569.915.26.2
Jul22° / 18°469.114.96.9
Aug23° / 19°499.413.87.0
Sep21° / 17°6610.912.36.4
Oct19° / 15°10313.810.85.5
Nov15° / 12°15216.19.53.9
Dec13° / 10°11714.98.83.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 18% of October, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24654
34555
44555
54555
64555
74456
84456
94456
104357
114357
124357
134357
144357
154456
164555
174456
184456
194456
204357
214357
224456
234357
244258
254258
264159
274159
284060
293961
303961
313862

Chance of precipitation in October

Any precipitation

Castro-Urdiales gets around 103 mm of rain over 13.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
243
344
444
545
646
746
846
946
1046
1146
1246
1346
1446
1546
1646
1745
1845
1945
2044
2144
2243
2343
2443
2543
2644
2744
2845
2946
3047
3147

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13638252
23738241
33838231
43938221
54037211
64138201
74338191
84438171
94538161
104639150
114839130
124939120
135039110
14523990
15523990
16533980
17543970
18553960
19563860
20573850
21583750
22603640
23613540
24623440
25643330
26653230
27673030
28682930
29712720
30722620
31742420

Wind in October

Winds average 15 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 7:16 AM to 7:54 AM, and sunset from 6:48 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:166:48
211.57:176:46
311.47:186:44
411.47:206:42
511.37:216:41
611.37:226:39
711.27:236:37
811.27:246:35
911.17:266:33
1011.17:276:32
1111.07:286:30
1211.07:296:28
1310.97:316:27
1410.97:326:25
1510.87:336:23
1610.87:346:22
1710.77:366:20
1810.77:376:18
1910.67:386:17
2010.67:396:15
2110.57:416:14
2210.57:426:12
2310.57:436:10
2410.47:456:09
2510.47:466:08
2610.37:476:06
2710.37:486:05
2810.27:506:03
2910.27:516:02
3010.17:526:01
3110.17:545:59

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.85 kWh/m².

For context, solar energy here swings from a low near 1.4 kWh/m² to a high of 6.12 kWh/m² in June across the year — October's 2.85 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.4Moderate
43.4Moderate
53.3Moderate
63.3Moderate
73.2Moderate
83.2Moderate
93.1Moderate
103.1Moderate
113.0Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.7Moderate
202.7Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.3Moderate
312.3Moderate
Planning a trip in October

Is October a good time to visit Castro-Urdiales?

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

5.5
Sightseeing
5th-best month of the year
2.2
Beach & pool
5th-best month of the year

October is a reasonable time to visit Castro-Urdiales for sightseeing.

What to pack for Castro-Urdiales in October

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

In October, Castro-Urdiales sees daytime highs around 19°C and nights near 15°C. Worth packing: rain gear. About 14 days see rain.

rain gear

Sea temperature near Castro-Urdiales in October

The nearest coast averages about 18°C in October — 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 22°C and coldest in February near 13°C.

It's comfortable for a long swim from Jul 11 to Sep 21 — about 2.4 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb13Bracing
Mar13Bracing
Apr13Bracing
May15Cool
Jun18Cool
Jul21Refreshing
Aug22Refreshing
Sep20Refreshing
Oct18Cool
Nov16Cool
Dec14Bracing

UV index in Castro-Urdiales in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Castro-Urdiales peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highHighModerateLowJul 15UV 9Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb2Low
Mar5Moderate
Apr6High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Castro-Urdiales?

Castro-Urdiales sits at 43.4°N, 3.2°W, 18 m above sea level, in Spain. The nearest listed city is Santurtzi, 16 km away.

Topography around Castro-Urdiales

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

Within 3 km, the terrain around Castro-Urdiales has significant variations in elevation — a maximum elevation change of 455 m around an average of 60 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 851 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,676 m.

The land around Castro-Urdiales is covered by water (46%) and trees (30%) within 3 km, water (50%) and trees (35%) within 16 km, and trees (37%), water (35%) and grassland (20%) within 80 km.

3 km
455 m
16 km
851 m
80 km
1,676 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Santurtzi 16 km · Getxo 17 km · Algorta 17 km · Portugalete 18 km · Sestao 19 km · Leioa 20 km · Barakaldo 21 km · Erandio 22 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 Castro-Urdiales (43.3828°, -3.2204°, elevation 18 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).