Valls weather in September

In September, Valls sees average daytime highs of 26°C and overnight lows near 16°C, with 72 mm of rain across 9.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 48% 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 Valls's 5th-clearest and 11th-windiest month. For the whole year in context, see Valls's year-round climate.

Daytime high
26°
4th warmest
Overnight low
16°
9th coldest
Rainfall
72 mm
9.3 wet days
Daylight
12 h 18 min
6:41 AM – 6:57 PM
Cloud cover
45%
5th clearest
Wind
8 km/h
11th windiest
Solar energy
4.7 kWh/m²
Travel score
7.1
out of 10

Valls is capital town of the municipality of Valls, 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 28°C in the first days to 24°C by the end.

A typical September day in Valls reaches about 26°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12819
22818
32818
42818
52818
62718
72718
82718
92717
102717
112717
122717
132617
142617
152617
162616
172616
182616
192516
202516
212516
222516
232515
242515
252515
262415
272415
282415
292415
302415

Valls weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 355.99.43.9
Feb14° / 274.910.34.8
Mar17° / 406.611.76.2
Apr19° / 528.113.16.6
May23° / 13°507.414.37.3
Jun27° / 17°325.614.97.3
Jul30° / 20°224.314.76.3
Aug30° / 20°456.713.75.9
Sep26° / 16°729.312.37.1
Oct22° / 13°687.810.97.0
Nov16° / 4769.75.8
Dec13° / 355.29.14.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
26832
36832
46832
56733
66733
76733
86733
96634
106634
116634
126634
136634
146634
156634
166634
176535
186535
196535
206535
216436
226436
236436
246436
256337
266337
276436
286436
296436
306436

Chance of precipitation in September

Any precipitation

Valls gets around 72 mm of rain over 9.3 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
330
430
530
630
730
830
930
1030
1130
1230
1330
1430
1531
1631
1731
1832
1932
2032
2132
2231
2331
2430
2530
2629
2728
2827
2926
3025

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 30% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1132231322
2132331312
3142331302
4142431301
5152431291
6162431281
7172530271
8182530261
9192530261
10202530251
11212530240
12222530230
13242529220
14252529210
15262529200
16272529190
17282530170
18292530160
19302530140
20312630130
21322630120
22332631100
2334273190
2434273180
2535273170
2636273160
2737273150
2838283040
2939283030
3040282930

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
279calm
289calm
299calm
309calm

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 6:26 AM to 6:56 AM, and sunset from 7:24 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:267:24
212.96:277:22
312.96:287:20
412.86:297:19
512.86:307:17
612.76:317:15
712.76:327:13
812.66:337:12
912.66:347:10
1012.66:357:08
1112.56:367:06
1212.56:377:05
1312.46:387:03
1412.46:397:01
1512.36:406:59
1612.36:416:57
1712.26:426:56
1812.26:436:54
1912.16:446:52
2012.16:456:50
2112.06:466:49
2212.06:476:47
2311.96:496:45
2411.96:506:43
2511.86:516:41
2611.86:526:40
2711.86:536:38
2811.76:546:36
2911.76:556:34
3011.66:566:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.7 kWh/m².

For context, solar energy here swings from a low near 1.92 kWh/m² to a high of 7.24 kWh/m² in June across the year — September's 4.7 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.0Bright
105.0Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.2Bright
294.1Bright
304.1Bright
Planning a trip in September

Is September a good time to visit Valls?

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

7.1
Sightseeing
3rd-best month of the year
6.7
Beach & pool
4th-best month of the year

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

What to pack for Valls in September

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

In September, Valls sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

Sea temperature near Valls 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 21 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Oct 27 — about 4.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug26Warm
Sep24Warm
Oct21Refreshing
Nov18Cool
Dec15Cool

UV index in Valls 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 Valls peaks around July 15 at about 9 (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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May6High
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low
Location & terrain

Where is Valls?

Valls sits at 41.3°N, 1.2°E, 223 m above sea level, in Spain. The nearest listed city is Tarragona, 19 km away.

Topography around Valls

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

Within 3 km, the terrain around Valls has only modest variations in elevation — a maximum elevation change of 168 m around an average of 223 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,102 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,321 m.

The land around Valls is covered by grassland (33%) and trees (26%) within 3 km, trees (44%) and grassland (23%) within 16 km, and trees (35%), water (24%) and cropland (21%) within 80 km.

3 km
168 m
16 km
1,102 m
80 km
1,321 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Tarragona 19 km · Reus 19 km · Torredembarra 20 km · Vila-seca 21 km · La Pineda 24 km · El Vendrell 25 km · Salou 25 km · Calafell 28 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 Valls (41.2861°, 1.2499°, elevation 223 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).