Alcázar de San Juan weather in September

In September, Alcázar de San Juan sees average daytime highs of 28°C and overnight lows near 15°C, with 22 mm of rain across 3.9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 31°C in the first days to 25°C by the end. The sky is clear or mostly clear about 56% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Alcázar de San Juan's 4th-clearest and 12th-windiest month. For the whole year in context, see Alcázar de San Juan's year-round climate.

Daytime high
28°
4th warmest
Overnight low
15°
9th coldest
Rainfall
22 mm
3.9 wet days
Daylight
12 h 18 min
7:00 AM – 7:15 PM
Cloud cover
38%
4th clearest
Wind
10 km/h
12th windiest
Solar energy
5.37 kWh/m²
Travel score
7.1
out of 10

Alcázar de San Juan is capital of Alcázar de San Juan Municipality, Spain.

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 31°C in the first days to 25°C by the end.

A typical September day in Alcázar de San Juan reaches about 28°C in the afternoon and slips back to 15°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, September runs about 6°C cooler than August and about 7°C warmer than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13118
23118
33118
43117
53017
63017
73017
83017
92917
102916
112916
122916
132816
142816
152816
162815
172715
182715
192715
202715
212614
222614
232614
242614
252514
262514
272514
282513
292513
302513

How September really feels in Alcázar de San Juan

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.

Alcázar de San Juan weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 306.60.59.52.8
Feb13° / 2960.410.53.9
Mar17° / 356.70.211.75.8
Apr19° / 448.10.1136.5
May24° / 12°397.1014.17.4
Jun30° / 17°193.9014.76.0
Jul34° / 20°71.7014.53.8
Aug34° / 19°102.2013.54.2
Sep28° / 15°223.9012.37.1
Oct21° / 11°447.10117.1
Nov15° / 426.509.84.8
Dec11° / 416.80.49.33.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28317
38317
48119
58119
67921
77921
87822
97723
107624
117525
127426
137426
147327
157327
167129
177129
187030
197030
206931
216931
226832
236832
246733
256733
266832
276733
286733
296832
306733

Chance of precipitation in September

Any precipitation

Alcázar de San Juan gets around 22 mm of rain over 3.9 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 13% and peaks near 15% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
19
29
39
49
510
610
710
810
911
1011
1111
1211
1312
1412
1513
1613
1714
1814
1914
2015
2115
2215
2315
2415
2515
2615
2715
2815
2915
3015

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 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
182153
282153
382153
483143
583143
683143
784133
884133
984133
1084133
1184133
1284133
1384133
1485132
1585132
1685132
1784142
1884142
1984142
2083152
2184151
2284151
2384151
2484151
2584151
2684151
2784151
2885141
2986131
3086131

Wind in September

Winds average 10 km/h in September, the calmest month.

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 12 h 54 min 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 78 minutes over September. Sunrise moves from 6:45 AM to 7:13 AM, and sunset from 7:40 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:457:40
212.96:467:38
312.86:477:36
412.86:487:35
512.76:497:33
612.76:507:32
712.66:517:30
812.66:527:28
912.66:537:27
1012.56:547:25
1112.56:557:23
1212.46:567:22
1312.46:577:20
1412.36:587:18
1512.36:597:16
1612.37:007:15
1712.27:007:13
1812.27:017:11
1912.17:027:10
2012.17:037:08
2112.07:047:06
2212.07:057:05
2311.97:067:03
2411.97:077:01
2511.97:087:00
2611.87:096:58
2711.87:106:56
2811.77:116:55
2911.77:126:53
3011.67:136:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.37 kWh/m².

For context, solar energy here swings from a low near 1.97 kWh/m² to a high of 7.88 kWh/m² in July across the year — September's 5.37 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.2Intense
36.2Intense
46.1Intense
56.0Intense
66.0Bright
75.9Bright
85.8Bright
95.8Bright
105.7Bright
115.7Bright
125.6Bright
135.5Bright
145.5Bright
155.4Bright
165.3Bright
175.3Bright
185.2Bright
195.1Bright
205.1Bright
215.0Bright
225.0Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.7Bright
284.7Bright
294.6Bright
304.6Bright
Planning a trip in September

Is September a good time to visit Alcázar de San Juan?

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

7.1
Sightseeing
2nd-best month of the year
7.8
Beach & pool
2nd-best month of the year

September is one of the better times to visit Alcázar de San Juan for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Alcázar de San Juan in September

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

In September, Alcázar de San Juan sees daytime highs around 28°C and nights near 15°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

UV index in Alcázar de San Juan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Alcázar de San Juan peaks around July 16 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 highVery highVery highHighModerateJul 16UV 10Dec 18UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr7Very high
May7High
Jun9Very high
Jul10Extreme
Aug9Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low
Location & terrain

Where is Alcázar de San Juan?

Alcázar de San Juan sits at 39.4°N, 3.2°W, 644 m above sea level, in Spain. The nearest listed city is Campo de Criptana, 7.0 km away.

Topography around Alcázar de San Juan

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Alcázar de San Juan.

Within 3 km, the terrain around Alcázar de San Juan has only modest variations in elevation — a maximum elevation change of 94 m around an average of 651 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 183 m; within 80 km, large variations in elevation — a maximum elevation change of 822 m.

The land around Alcázar de San Juan is covered by cropland (56%) and artificial surfaces (21%) within 3 km, cropland (79%) within 16 km, and cropland (71%) within 80 km.

3 km
94 m
16 km
183 m
80 km
822 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Campo de Criptana 7.0 km · Tomelloso 30 km · Manzanares 46 km · La Solana 50 km · Daimiel 50 km · Villarrobledo 54 km · Tarancón 71 km · Valdepeñas 71 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 Alcázar de San Juan (39.3901°, -3.2083°, elevation 644 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).