Sant Andreu de la Barca weather in September

In September, Sant Andreu de la Barca sees average daytime highs of 25°C and overnight lows near 16°C, with 87 mm of rain across 11.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 40% of the time in September, and the air most often feels humid.

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 Sant Andreu de la Barca's 9th-clearest and 11th-windiest month. For the whole year in context, see Sant Andreu de la Barca's year-round climate.

Daytime high
25°
4th warmest
Overnight low
16°
10th coldest
Rainfall
87 mm
11.6 wet days
Daylight
12 h 18 min
6:38 AM – 6:55 PM
Cloud cover
51%
9th clearest
Wind
7 km/h
11th windiest
Solar energy
4.46 kWh/m²
Travel score
6.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 23°C by the end.

A typical September day in Sant Andreu de la Barca reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12718
22618
32618
42618
52617
62617
72617
82617
92517
102517
112517
122517
132516
142516
152516
162516
172416
182416
192416
202415
212415
222415
232415
242315
252315
262315
272315
282314
292314
302314

Sant Andreu de la Barca weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 386.19.33.8
Feb14° / 346.110.34.4
Mar16° / 447.211.75.5
Apr18° / 619.513.16.0
May21° / 12°558.714.36.8
Jun25° / 16°426.814.97.6
Jul28° / 19°345.814.77.3
Aug28° / 19°507.913.76.8
Sep25° / 16°8711.612.36.7
Oct21° / 12°9010.510.96.4
Nov16° / 587.39.75.5
Dec13° / 395.79.14.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26040
35941
45941
55842
65842
75941
85842
95842
105941
115842
125842
135842
145743
155842
165842
175842
185842
195842
205842
215842
225743
235743
245743
255842
265842
275842
285842
295842
305842

Chance of precipitation in September

Any precipitation

Sant Andreu de la Barca gets around 87 mm of rain over 11.6 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 38% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
237
338
438
538
638
738
838
938
1038
1138
1238
1338
1438
1538
1639
1739
1839
1939
2039
2139
2239
2338
2438
2538
2637
2737
2836
2936
3036

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 22% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
131338424
231439413
341539403
441540382
551640372
661741351
771841341
881841331
981941311
1092041300
11102140280
12112240270
13122340250
14132440240
15142440220
16152539200
17162639190
18172739170
19182839160
20192938140
21193038130
22203138110
23213138100
2421323890
2522333780
2623333770
2724333760
2825343650
2926343640
3027343540

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:23 AM to 6:53 AM, and sunset from 7:21 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:237:21
212.96:247:19
312.96:257:18
412.86:267:16
512.86:277:14
612.76:287:12
712.76:297:11
812.66:307:09
912.66:317:07
1012.66:327:05
1112.56:337:04
1212.56:347:02
1312.46:357:00
1412.46:366:58
1512.36:376:56
1612.36:386:55
1712.26:396:53
1812.26:406:51
1912.16:416:49
2012.16:426:47
2112.06:446:46
2212.06:456:44
2311.96:466:42
2411.96:476:40
2511.86:486:39
2611.86:496:37
2711.86:506:35
2811.76:516:33
2911.76:526:31
3011.66:536:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.46 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 6.94 kWh/m² in June across the year — September's 4.46 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.6Bright
154.5Bright
164.5Bright
174.4Bright
184.4Bright
194.3Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.0Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Is September a good time to visit Sant Andreu de la Barca?

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

6.7
Sightseeing
5th-best month of the year
5.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Sant Andreu de la Barca for sightseeing.

What to pack for Sant Andreu de la Barca in September

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

In September, Sant Andreu de la Barca sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Sant Andreu de la Barca in September

The nearest coast averages about 24°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 35 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 11 to Oct 23 — about 4.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May17Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep24Refreshing
Oct21Refreshing
Nov17Cool
Dec15Bracing

UV index in Sant Andreu de la Barca 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 Sant Andreu de la Barca peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Sant Andreu de la Barca?

Sant Andreu de la Barca sits at 41.4°N, 2.0°E, 61 m above sea level, in Spain. The nearest listed city is Martorell, 5.0 km away.

Topography around Sant Andreu de la Barca

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sant Andreu de la Barca.

Within 3 km, the terrain around Sant Andreu de la Barca has significant variations in elevation — a maximum elevation change of 310 m around an average of 117 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 650 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,074 m.

The land around Sant Andreu de la Barca is covered by trees (56%) and artificial surfaces (32%) within 3 km, trees (55%) and artificial surfaces (24%) within 16 km, and trees (42%) and water (29%) within 80 km.

3 km
310 m
16 km
650 m
80 km
2,074 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Martorell 5.0 km · Molins de Rei 5.0 km · Sant Vicenç dels Horts 7.0 km · Rubí 7.0 km · Sant Feliu de Llobregat 10 km · Sant Cugat del Vallès 10 km · Sant Just Desvern 11 km · Sant Joan Despí 11 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 Sant Andreu de la Barca (41.4466°, 1.9719°, elevation 61 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).