Blanes weather in September

In September, Blanes sees average daytime highs of 25°C and overnight lows near 16°C, with 85 mm of rain across 10.8 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 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 33% 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 Blanes's 9th-clearest and 10th-windiest month. For the whole year in context, see Blanes's year-round climate.

Daytime high
25°
4th warmest
Overnight low
16°
9th coldest
Rainfall
85 mm
10.8 wet days
Daylight
12 h 18 min
6:35 AM – 6:51 PM
Cloud cover
53%
9th clearest
Wind
7 km/h
10th windiest
Solar energy
4.2 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 27°C in the first days to 23°C by the end.

A typical September day in Blanes 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 28°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)
12718
22718
32717
42717
52617
62617
72617
82617
92617
102616
112616
122516
132516
142516
152516
162516
172515
182415
192415
202415
212415
222415
232415
242415
252414
262314
272314
282314
292314
302314

Blanes 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
Jan13° / 516.90.39.33.8
Feb14° / 466.90.610.34.2
Mar16° / 588.20.211.75.3
Apr18° / 7110.1013.15.9
May22° / 12°6510014.36.7
Jun26° / 16°497.60157.3
Jul28° / 19°426.7014.76.7
Aug29° / 19°508.3013.76.2
Sep25° / 16°8510.8012.36.7
Oct21° / 12°10210.2010.96.4
Nov16° / 688.109.65.3
Dec13° / 506.40.394.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55644
65743
75743
85743
95644
105644
115644
125644
135644
145644
155644
165545
175545
185644
195644
205644
215644
225644
235644
245644
255743
265743
275743
285743
295743
305743

Chance of precipitation in September

Any precipitation

Blanes gets around 85 mm of rain over 10.8 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 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
237
337
437
538
637
737
837
937
1037
1137
1236
1336
1436
1536
1636
1736
1836
1936
2036
2135
2235
2335
2435
2535
2634
2734
2834
2934
3034

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
192337291
2102437281
3102538271
4112638250
5122638240
6122738230
7132738210
8142838200
9152838190
10152938180
11162937170
12173037160
13183137150
14193136140
15203236130
16213235120
17223334110
18233333100
1925343290
2026353180
2127353080
2228362970
2329362960
2429372860
2530382760
2631382650
2732382550
2832392540
2933392440
3034392340

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 6:19 AM to 6:50 AM, and sunset from 7:18 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:197:18
212.96:207:16
312.96:217:15
412.86:227:13
512.86:237:11
612.76:247:09
712.76:257:08
812.76:267:06
912.66:287:04
1012.66:297:02
1112.56:307:00
1212.56:316:59
1312.46:326:57
1412.46:336:55
1512.36:346:53
1612.36:356:51
1712.26:366:50
1812.26:376:48
1912.16:386:46
2012.16:396:44
2112.06:406:42
2212.06:416:41
2311.96:426:39
2411.96:436:37
2511.86:456:35
2611.86:466:33
2711.76:476:32
2811.76:486:30
2911.76:496:28
3011.66:506:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.2 kWh/m².

For context, solar energy here swings from a low near 1.78 kWh/m² to a high of 6.56 kWh/m² in June across the year — September's 4.2 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.0Bright
214.0Bright
224.0Moderate
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 Blanes?

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

6.7
Sightseeing
2nd-best month of the year
6.0
Beach & pool
4th-best month of the year

September is a reasonable time to visit Blanes for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Blanes in September

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

In September, Blanes sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes and rain gear. About 11 days see rain.

light clothesrain gear

Sea temperature near Blanes 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 offshore is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 15 to Oct 16 — about 4.1 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 Blanes 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 Blanes peaks around July 13 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 13UV 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 Blanes?

Blanes sits at 41.7°N, 2.8°E, 16 m above sea level, in Spain. The nearest listed city is Malgrat de Mar, 5.0 km away.

Topography around Blanes

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

Within 3 km, the terrain around Blanes has only modest variations in elevation — a maximum elevation change of 160 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 672 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,899 m.

The land around Blanes is covered by water (37%) and trees (23%) within 3 km, water (46%) and trees (38%) within 16 km, and trees (44%) and water (37%) within 80 km.

3 km
160 m
16 km
672 m
80 km
1,899 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Malgrat de Mar 5.0 km · Lloret de Mar 5.0 km · Tordera 7.0 km · Pineda de Mar 10 km · Calella 13 km · Arenys de Mar 23 km · Sant Feliu de Guíxols 24 km · Sant Celoni 25 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 Blanes (41.6742°, 2.7904°, elevation 16 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).