Alcalá de Henares weather in October

In October, Alcalá de Henares sees average daytime highs of 20°C and overnight lows near 9°C, with 64 mm of rain across 8.3 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 17°C by the end. The sky is clear or mostly clear about 37% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Alcalá de Henares's 6th-clearest and 10th-windiest month. For the whole year in context, see Alcalá de Henares's year-round climate.

Daytime high
20°
6th warmest
Overnight low
7th coldest
Rainfall
64 mm
8.3 wet days
Daylight
10 h 54 min
7:31 AM – 6:26 PM
Cloud cover
52%
6th clearest
Wind
9 km/h
10th windiest
Solar energy
3.48 kWh/m²
Travel score
6.6
out of 10

Alcalá de Henares is capital of Alcalá de Henares Municipality, Spain.

Air quality
Moderate
PM2.5 12.5 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 23°C in the first days to 17°C by the end.

A typical October day in Alcalá de Henares reaches about 20°C in the afternoon and slips back to 9°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, October runs about 7°C cooler than September and about 6°C warmer than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12311
22311
32311
42311
52311
62211
72211
82210
92210
102110
112110
122110
132110
142010
152010
162010
17209
18199
19199
20199
21199
22199
23189
24189
25188
26188
27188
28188
29178
30178
31177

How October really feels in Alcalá de Henares

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Alcalá de Henares weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 427.70.89.42.3
Feb12° / 356.30.910.43.5
Mar16° / 447.70.311.75.3
Apr18° / 568.70136.1
May23° / 10°508.5014.27.1
Jun29° / 15°234014.86.8
Jul33° / 18°81.8014.64.8
Aug32° / 17°132.7013.65.0
Sep27° / 14°284.5012.37.5
Oct20° / 648.3010.96.6
Nov14° / 588.10.19.74.2
Dec10° / 477.70.59.22.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46436
56337
66238
76238
86040
95941
105842
115743
125644
135446
145347
155248
165149
174951
184951
194951
204753
214753
224753
234753
244753
254753
264753
274753
284753
294852
304852
314852

Chance of precipitation in October

Any precipitation

Alcalá de Henares gets around 64 mm of rain over 8.3 wet days in October, 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 32% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
119
219
320
420
521
621
722
823
923
1024
1126
1227
1328
1429
1530
1631
1732
1832
1932
2032
2132
2232
2332
2431
2531
2631
2731
2830
2930
3030
3130

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1928
2928
3928
4928
5928
6928
7928
8928
9928
10937
11937
12937
13928
14928
15928
16928
17937
18937
19937
20937
21946
22946
23946
24955
25955
26955
27964
28964
29973
30973
31982

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 7:15 AM to 7:49 AM, and sunset from 6:50 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:156:50
211.57:166:48
311.57:176:46
411.47:186:45
511.47:196:43
611.37:206:41
711.37:216:40
811.37:236:38
911.27:246:36
1011.27:256:35
1111.17:266:33
1211.17:276:32
1311.07:286:30
1411.07:296:29
1510.97:306:27
1610.97:316:26
1710.97:326:24
1810.87:346:23
1910.87:356:21
2010.77:366:20
2110.77:376:18
2210.67:386:17
2310.67:396:16
2410.67:406:14
2510.57:426:13
2610.57:436:12
2710.47:446:10
2810.47:456:09
2910.47:466:08
3010.37:476:07
3110.37:496:05

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.48 kWh/m².

For context, solar energy here swings from a low near 1.81 kWh/m² to a high of 7.77 kWh/m² in July across the year — October's 3.48 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.0Bright
83.9Moderate
93.9Moderate
103.8Moderate
113.7Moderate
123.7Moderate
133.6Moderate
143.5Moderate
153.5Moderate
163.4Moderate
173.4Moderate
183.3Moderate
193.2Moderate
203.2Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.0Moderate
253.0Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Is October a good time to visit Alcalá de Henares?

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

6.6
Sightseeing
4th-best month of the year
3.5
Beach & pool
6th-best month of the year

October is a reasonable time to visit Alcalá de Henares for sightseeing.

What to pack for Alcalá de Henares in October

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

In October, Alcalá de Henares sees daytime highs around 20°C and nights near 9°C. Worth packing: rain gear. About 8 days see rain.

rain gear

UV index in Alcalá de Henares 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 Alcalá de Henares peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 10Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb2Moderate
Mar6High
Apr7High
May7High
Jun9Very high
Jul10Extreme
Aug9Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Alcalá de Henares in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Alcalá de Henares is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Alcalá de Henares's WHO annual average of 12.5 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodMar 1715 µg/m³Nov 1910 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar16Moderate
Apr14Moderate
May11Good
Jun12Good
Jul12Good
Aug13Moderate
Sep12Moderate
Oct13Moderate
Nov10Good
Dec11Good
Location & terrain

Where is Alcalá de Henares?

Alcalá de Henares sits at 40.5°N, 3.4°W, 597 m above sea level, in Spain. The nearest listed city is Torrejón de Ardoz, 10 km away.

Topography around Alcalá de Henares

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

Within 3 km, the terrain around Alcalá de Henares has significant variations in elevation — a maximum elevation change of 279 m around an average of 609 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 375 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,961 m.

The land around Alcalá de Henares is covered by artificial surfaces (42%), trees (24%) and grassland (24%) within 3 km, cropland (53%) and grassland (24%) within 16 km, and cropland (38%), grassland (29%) and trees (25%) within 80 km.

3 km
279 m
16 km
375 m
80 km
1,961 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Torrejón de Ardoz 10 km · Azuqueca de Henares 12 km · Mejorada del Campo 14 km · San Fernando de Henares 16 km · Algete 17 km · Coslada 18 km · Rejas 18 km · Barajas de Madrid 18 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 Alcalá de Henares (40.4821°, -3.36°, elevation 597 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. 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).