Sant Celoni weather in September

In September, Sant Celoni sees average daytime highs of 24°C and overnight lows near 14°C, with 118 mm of rain across 13 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 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 32% 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 Celoni's 9th-clearest and 12th-windiest month. For the whole year in context, see Sant Celoni's year-round climate.

Daytime high
24°
4th warmest
Overnight low
14°
9th coldest
Rainfall
118 mm
13 wet days
Daylight
12 h 18 min
6:36 AM – 6:53 PM
Cloud cover
56%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
4.18 kWh/m²
Travel score
6.4
out of 10

Sant Celoni is capital town of the municipality of San Celoni, Spain.

Air quality
Good
PM10 19.3 µg/m³ · 2019

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 25°C in the first days to 22°C by the end.

A typical September day in Sant Celoni reaches about 24°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°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°151015202530
Avg high (°C)Avg low (°C)
12616
22516
32516
42516
52516
62515
72515
82515
92415
102415
112415
122415
132414
142414
152414
162314
172314
182314
192314
202314
212313
222313
232213
242213
252213
262213
272213
282213
292213
302212

How September really feels in Sant Celoni

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.

Sant Celoni 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 daysSnow daysDaylight (hours)Travel score
Jan11° / 547.10.49.33.2
Feb12° / 527.61.110.33.6
Mar15° / 709.40.311.74.8
Apr17° / 9211.8013.15.3
May21° / 11°9711.3014.36.2
Jun25° / 15°839.40157.1
Jul27° / 17°749014.77.0
Aug27° / 17°8610.5013.76.6
Sep24° / 14°11813012.36.4
Oct20° / 11°12111.6010.96.0
Nov15° / 769.20.19.64.6
Dec12° / 526.70.493.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25347
35446
45347
55347
65347
75347
85347
95347
105446
115347
125347
135347
145347
155248
165248
175248
185248
195248
205248
215248
225149
235248
245248
255248
265248
275248
285347
295347
305248

Chance of precipitation in September

Any precipitation

Sant Celoni gets around 118 mm of rain over 13 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 43% and peaks near 46% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
144
245
345
445
546
646
745
845
945
1045
1145
1244
1344
1444
1544
1643
1743
1843
1943
2043
2142
2242
2342
2441
2541
2641
2740
2840
2940
3040

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16244525
26254524
37274522
48284520
59294518
610294516
711304514
812314513
913324411
1014324410
111533439
121634428
131735417
141935406
152036395
162137384
172337374
182438353
192638333
202739322
212839302
223040282
233141272
243241262
253242242
263342231
273442221
283642211
293742201
303842191

Wind in September

Winds average 6 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:20 AM to 6:51 AM, and sunset from 7:19 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:207:19
212.96:217:18
312.96:227:16
412.86:237:14
512.86:247:12
612.76:267:11
712.76:277:09
812.76:287:07
912.66:297:05
1012.66:307:03
1112.56:317:02
1212.56:327:00
1312.46:336:58
1412.46:346:56
1512.36:356:54
1612.36:366:53
1712.26:376:51
1812.26:386:49
1912.16:396:47
2012.16:406:45
2112.06:416:44
2212.06:436:42
2311.96:446:40
2411.96:456:38
2511.86:466:36
2611.86:476:35
2711.76:486:33
2811.76:496:31
2911.76:506:29
3011.66:516:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.18 kWh/m².

For context, solar energy here swings from a low near 1.79 kWh/m² to a high of 6.53 kWh/m² in June across the year — September's 4.18 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.3Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.0Bright
214.0Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.7Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Is September a good time to visit Sant Celoni?

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

6.4
Sightseeing
4th-best month of the year
5.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Sant Celoni for sightseeing.

What to pack for Sant Celoni in September

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

In September, Sant Celoni sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Sant Celoni in September

The nearest coast averages about 23°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 13 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 14 to Oct 18 — about 4.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May17Cool
Jun20Refreshing
Jul23Refreshing
Aug25Warm
Sep23Refreshing
Oct20Refreshing
Nov17Cool
Dec15Bracing

UV index in Sant Celoni 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 Celoni peaks around July 14 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 14UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Sant Celoni?

Sant Celoni sits at 41.7°N, 2.5°E, 162 m above sea level, in Spain. The nearest listed city is Cardedeu, 12 km away.

Topography around Sant Celoni

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

Within 3 km, the terrain around Sant Celoni has significant variations in elevation — a maximum elevation change of 255 m around an average of 201 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,693 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,569 m.

The land around Sant Celoni is covered by trees (73%) within 3 km, trees (78%) within 16 km, and trees (49%) and water (29%) within 80 km.

3 km
255 m
16 km
1,693 m
80 km
2,569 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Cardedeu 12 km · Arenys de Mar 13 km · Calella 16 km · Mataró 17 km · Pineda de Mar 18 km · Canovelles 19 km · Granollers 19 km · Tordera 19 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 Celoni (41.6892°, 2.4897°, elevation 162 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).