NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
ES

Spain Sea Temperature in September

Historical 30-year sea surface temperatures across 73 coastlines in Spain for September. Derived from NOAA 0.25° blended satellite and in-situ marine observations.

Climatology Notice: Temperatures represent the 30-year long-term historical average (1991–2020 normal), not a live single-day sensor forecast.
Bathing Climatology Gauge · Spain (September)
NOAA OISST v2.1 (0.25° Marine Grid)
22.8°C
Pleasant & Comfortable
Mean sea surface temperature across 73 monitored coastlines
Swimmability Verdict
Effortless Prolonged Bathing
Warmest Coastline
Es Trenc25.0°C
Coldest Surveyed Shore
Swimmable Ratio (≥21°C)
79% of coastlines58/73

Spain’s primary swimming window runs from 22 Jun to 14 Oct (~115 days/year). Currently 0.8°C below the August peak of 23.7°C. High ocean specific heat capacity creates distinct thermal lag: water releases stored summer warmth gradually, making early autumn bathing warmer than late spring despite cooler evening air.

Plan Your September Trip to Spain

Autumn shoulder-season rates are currently live across Spain. Pair warm coastal waters with discounted stays and uncrowded beaches.

Autumn Stays in SpainCompare Rates in Spain

Warmest Swimming Bases in Spain (September)

The top 3 coastlines holding highest water temperatures based on 30-year NOAA climatology.

NOAA OISST v2.1
#1 Warmest

Es Trenc

Mallorca, Balearics
25.0°C
#2 Warmest

Cala Mondrago

Santanyi, Mallorca
24.9°C
#3 Warmest

Platja de Migjorn

Formentera, Balearics
24.9°C

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Balearic Sea Heat Reservoir vs Cantabrian Atlantic Chill

Spain presents Europe’s sharpest internal contrast: the Balearic Sea and Costa Blanca reach 26.0–26.5°C in August in calm, high-evaporation conditions, while northern Atlantic Galicia and the Cantabrian Sea hover at 19.5–21.0°C due to open North Atlantic wave fetch, tidal mixing, and periodic Rías upwelling.

Oceanographic Phenomenon:Mediterranean Microclimate vs Bay of Biscay Swell
Thermal Lag Characteristic:Extended Mediterranean thermal lag: Mallorca and Ibiza maintain 22.4°C sea temperatures into late October, creating Europe’s longest comfortable autumn swimming zone.
Peak Bathing Average:August (26.2°C)
Statutory Tourism Sources:
ibiza.travelspain.infocaib.esillesbalears.travelformentera.es

The September Thermal Lag Advantage

Because seawater has a high specific heat capacity, it acts as a massive thermal battery. Southern European and Mediterranean basins absorb solar energy all summer, reaching maximum heat storage by late August. In September, while air temperatures drop, the water releases heat slowly, which creates sea temperatures that are typically 3°C to 5°C warmer than in June.

CYPRUS (AYIA NAPA / PROTARAS)
27.5°C
Effortless swimming
TURKEY (ANTALYA / KAŞ)
27.3°C
Warm bathwater
GREECE (CRETE / RHODES)
25.4°C
Extended season
MALTA & GOZO
26.1°C
Crystal clear
Field Guides:Autumn Warmth Guide October Swimming Guide November Swimming Guide Late Escape Deals (15%+ Off)

Spain Beaches in September

Individual coordinate lookups from NOAA 0.25° marine grid.

Showing 73 coastlines
Es Trenc
#1 in September
25.0°C
Spain flagMallorca, Balearics, Spain
● Warm Bathwater
NOAA Season Curve (May–Oct):
M
18.2°
J
21.6°
J
24.7°
A
26.2°
S
25.0°
O
22.4°
N
19.2°
Cala Mondrago
#2 in September
24.9°C
Spain flagSantanyi, Mallorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.1°
J
21.5°
J
24.7°
A
26.1°
S
24.9°
O
22.4°
N
19.2°
Platja de Migjorn
#3 in September
24.9°C
Spain flagFormentera, Balearics, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.3°
J
21.5°
J
24.6°
A
26.1°
S
24.9°
O
22.2°
N
19.1°
Caló des Moro
#4 in September
24.9°C
Spain flagMallorca, Balearics, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.1°
J
21.5°
J
24.7°
A
26.1°
S
24.9°
O
22.4°
N
19.2°
Playa de Ses Illetes
#5 in September
24.9°C
Spain flagFormentera, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.3°
J
21.5°
J
24.6°
A
26.1°
S
24.9°
O
22.2°
N
19.1°
Playa de las Arenas
#8 in September
24.9°C
Spain flagValencia, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.1°
J
22.8°
J
25.6°
A
26.5°
S
24.9°
O
22.1°
N
18.5°
Cala d'Hort
#9 in September
24.8°C
Spain flagBalearic Islands (Ibiza), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.1°
J
23.4°
J
25.9°
A
26.5°
S
24.8°
O
21.8°
N
18.5°
Caló des Màrmols
#10 in September
24.8°C
Spain flagMallorca (Santanyí / Cape Ses Salines), Balearic Islands, Spain, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.2°
J
22.8°
J
25.2°
A
26.2°
S
24.8°
O
22.0°
N
18.8°
Cala Salada & Saladeta
#11 in September
24.8°C
Spain flagBalearic Islands (Ibiza), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.1°
J
23.4°
J
25.9°
A
26.5°
S
24.8°
O
21.8°
N
18.5°
Cala Llombards
#12 in September
24.8°C
Spain flagBalearic Islands (Mallorca / Santanyí), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.1°
J
23.4°
J
25.9°
A
26.5°
S
24.8°
O
21.8°
N
18.5°
Cala Comte
#13 in September
24.8°C
Spain flagIbiza, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.2°
J
21.5°
J
24.7°
A
26.1°
S
24.8°
O
22.1°
N
18.9°
Cala Agulla
#14 in September
24.8°C
Spain flagCala Ratjada, Mallorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.0°
J
21.5°
J
24.6°
A
26.0°
S
24.8°
O
22.3°
N
19.2°
Cala Formentor
#15 in September
24.8°C
Spain flagPollenca, Mallorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.0°
J
21.4°
J
24.5°
A
26.0°
S
24.8°
O
22.2°
N
19.0°
Cala Benirràs
#16 in September
24.8°C
Spain flagIbiza, Balearics, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.1°
J
21.5°
J
24.7°
A
26.2°
S
24.8°
O
22.1°
N
18.8°
Playa del Postiguet
#17 in September
24.8°C
Spain flagAlicante, Costa Blanca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.4°
J
21.8°
J
24.9°
A
26.2°
S
24.8°
O
22.0°
N
18.9°
Playa de Levante
#18 in September
24.8°C
Spain flagBenidorm, Costa Blanca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.3°
J
21.7°
J
24.8°
A
26.2°
S
24.8°
O
22.0°
N
18.9°
Playa del Saler
#19 in September
24.8°C
Spain flagValencia, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.9°
J
22.6°
J
25.5°
A
26.4°
S
24.8°
O
22.0°
N
18.3°
Cala Macarella
#20 in September
24.7°C
Spain flagCiutadella, Menorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
17.9°
J
21.4°
J
24.5°
A
25.9°
S
24.7°
O
22.1°
N
19.0°
Cala Turqueta
#21 in September
24.7°C
Spain flagMenorca, Balearics, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
17.9°
J
21.4°
J
24.5°
A
25.9°
S
24.7°
O
22.1°
N
19.0°
Cala Mitjana
#22 in September
24.7°C
Spain flagFerreries, Menorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
17.9°
J
21.4°
J
24.5°
A
25.9°
S
24.7°
O
22.1°
N
19.0°
Cala del Moraig
#23 in September
24.7°C
Spain flagBenitatxell, Costa Blanca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.1°
J
21.5°
J
24.7°
A
26.1°
S
24.7°
O
21.9°
N
18.8°
Cala Macarelleta
#24 in September
24.7°C
Spain flagMenorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
17.9°
J
21.4°
J
24.5°
A
25.9°
S
24.7°
O
22.1°
N
19.0°
Cala Granadella
#25 in September
24.7°C
Spain flagJávea, Costa Blanca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.1°
J
21.5°
J
24.7°
A
26.1°
S
24.7°
O
21.9°
N
18.8°
Cala Galdana
#26 in September
24.7°C
Spain flagFerreries, Menorca, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
17.9°
J
21.4°
J
24.5°
A
25.9°
S
24.7°
O
22.1°
N
19.0°
Cala Pregonda
#27 in September
24.5°C
Spain flagMenorca, Balearics, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
17.7°
J
21.3°
J
24.3°
A
25.7°
S
24.5°
O
21.9°
N
18.7°
Playa de las Teresitas
#29 in September
23.9°C
Spain flagSan Andres, Tenerife, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.2°
J
21.5°
J
22.2°
A
23.2°
S
23.9°
O
23.6°
N
22.3°
Playa de Benijo
#30 in September
23.9°C
Spain flagTaganana, Tenerife, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.2°
J
21.5°
J
22.2°
A
23.2°
S
23.9°
O
23.6°
N
22.3°
Playa del Duque
#31 in September
23.7°C
Spain flagCosta Adeje, Tenerife, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.2°
J
21.4°
J
22.2°
A
23.1°
S
23.7°
O
23.6°
N
22.3°
Playa de Güigüí
#32 in September
23.4°C
Spain flagLa Aldea, Gran Canaria, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.1°
J
21.3°
J
22.0°
A
22.9°
S
23.4°
O
23.3°
N
22.2°
Playa de Las Canteras
#33 in September
23.4°C
Spain flagLas Palmas, Gran Canaria, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.0°
J
21.2°
J
21.9°
A
22.7°
S
23.4°
O
23.2°
N
22.0°
Playa de Maspalomas
#34 in September
23.3°C
Spain flagMaspalomas, Gran Canaria, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.1°
J
21.3°
J
21.9°
A
22.7°
S
23.3°
O
23.2°
N
22.1°
Playa del Inglés
#35 in September
23.3°C
Spain flagMaspalomas, Gran Canaria, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
20.1°
J
21.3°
J
21.9°
A
22.7°
S
23.3°
O
23.2°
N
22.1°
Playa del Moro (Alzada)
#36 in September
23.2°C
Spain flagFuerteventura (Corralejo Natural Park / La Oliva), Canary Islands, Spain, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.5°
J
20.8°
J
22.0°
A
22.8°
S
23.2°
O
22.5°
N
21.0°
Playa de los Genoveses
#37 in September
23.1°C
Spain flagAndalusia (Cabo de Gata / San José), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.5°
J
21.6°
J
23.8°
A
24.4°
S
23.1°
O
20.6°
N
18.1°
Mónsul Beach
#38 in September
23.1°C
Spain flagAndalusia (Cabo de Gata / San José), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.5°
J
21.6°
J
23.8°
A
24.4°
S
23.1°
O
20.6°
N
18.1°
Playa de los Muertos
#39 in September
23.1°C
Spain flagAndalusia (Cabo de Gata / Carboneras), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.5°
J
21.6°
J
23.8°
A
24.4°
S
23.1°
O
20.6°
N
18.1°
Calblanque Beach
#40 in September
23.1°C
Spain flagRegión de Murcia (Cartagena), Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.5°
J
21.6°
J
23.8°
A
24.4°
S
23.1°
O
20.6°
N
18.1°
Tossa de Mar
#42 in September
23.1°C
Spain flagCosta Brava, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
16.6°
J
20.2°
J
23.2°
A
24.6°
S
23.1°
O
20.1°
N
16.9°
Playa de Papagayo
#43 in September
23.0°C
Spain flagPlaya Blanca, Lanzarote, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.6°
J
20.8°
J
21.6°
A
22.4°
S
23.0°
O
22.8°
N
21.5°
Playa de las Conchas
#44 in September
23.0°C
Spain flagLa Graciosa, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.4°
J
20.7°
J
21.5°
A
22.4°
S
23.0°
O
22.8°
N
21.5°
Playa de Cofete
#45 in September
23.0°C
Spain flagJandia, Fuerteventura, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.8°
J
21.0°
J
21.7°
A
22.5°
S
23.0°
O
22.9°
N
21.7°
El Golfo (Charco Verde)
#46 in September
23.0°C
Spain flagLanzarote, Canary Islands, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.6°
J
20.8°
J
21.6°
A
22.4°
S
23.0°
O
22.8°
N
21.5°
Playa de Famara
#47 in September
23.0°C
Spain flagLanzarote, Canary Islands, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.5°
J
20.7°
J
21.5°
A
22.4°
S
23.0°
O
22.7°
N
21.5°
Playa de Sotavento
#49 in September
22.9°C
Spain flagJandía, Fuerteventura, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
19.8°
J
21.0°
J
21.6°
A
22.4°
S
22.9°
O
22.8°
N
21.7°
Calella de Palafrugell
#50 in September
22.0°C
Spain flagBaix Empordà, Costa Brava, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
16.2°
J
19.6°
J
22.3°
A
23.5°
S
22.0°
O
19.1°
N
16.5°
Cala Aiguablava
#51 in September
22.0°C
Spain flagBegur, Costa Brava, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
16.2°
J
19.6°
J
22.3°
A
23.5°
S
22.0°
O
19.1°
N
16.5°
Platja de Castell
#52 in September
22.0°C
Spain flagPalamós, Costa Brava, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
16.2°
J
19.6°
J
22.3°
A
23.5°
S
22.0°
O
19.1°
N
16.5°
Playa de la Barrosa
#53 in September
22.0°C
Spain flagChiclana de la Frontera, Cádiz, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
18.1°
J
20.2°
J
22.1°
A
22.9°
S
22.0°
O
20.4°
N
18.3°
Platja de Tamariu
#54 in September
22.0°C
Spain flagBaix Empordà, Costa Brava, Spain
● Pleasant & Comfortable
NOAA Season Curve (May–Oct):
M
16.2°
J
19.6°
J
22.3°
A
23.5°
S
22.0°
O
19.1°
N
16.5°
Playa de El Palmar
#55 in September
21.9°C
Spain flagVejer de la Frontera, Cádiz, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
17.9°
J
20.0°
J
21.9°
A
22.7°
S
21.9°
O
20.5°
N
18.7°
Playa de Bolonia
#56 in September
21.6°C
Spain flagTarifa, Costa de la Luz, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
17.8°
J
19.7°
J
21.6°
A
22.4°
S
21.6°
O
20.3°
N
18.6°
Playa de Valdevaqueros
#58 in September
21.6°C
Spain flagTarifa, Cádiz, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
17.8°
J
19.7°
J
21.6°
A
22.4°
S
21.6°
O
20.3°
N
18.6°
Playa de Laga
#59 in September
20.8°C
Spain flagIbarrangelu, Urdaibai, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.7°
J
18.7°
J
21.1°
A
22.1°
S
20.8°
O
18.3°
N
15.8°
Playa de la Concha
#60 in September
20.8°C
Spain flagSan Sebastián, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.8°
J
18.9°
J
21.2°
A
22.2°
S
20.8°
O
18.3°
N
15.8°
Zarautz
#61 in September
20.8°C
Spain flagBasque Country, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.8°
J
18.8°
J
21.1°
A
22.2°
S
20.8°
O
18.3°
N
15.8°
Mundaka
#62 in September
20.7°C
Spain flagUrdaibai, Bizkaia, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.4°
J
18.3°
J
20.8°
A
21.9°
S
20.7°
O
18.3°
N
15.9°
Playa del Sardinero
#63 in September
20.4°C
Spain flagSantander, Cantabria, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.1°
J
17.8°
J
20.3°
A
21.5°
S
20.4°
O
18.2°
N
15.8°
Playa de Gulpiyuri
#64 in September
20.1°C
Spain flagLlanes, Asturias, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
14.9°
J
17.4°
J
20.0°
A
21.2°
S
20.1°
O
18.0°
N
15.7°
Playa de Cuevas del Mar
#65 in September
20.1°C
Spain flagNueva de Llanes, Asturias, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
14.9°
J
17.4°
J
20.0°
A
21.2°
S
20.1°
O
18.0°
N
15.7°
Torimbia Beach
#66 in September
19.8°C
Spain flagAsturias (Llanes), Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.9°
J
18.5°
J
20.2°
A
20.8°
S
19.8°
O
17.5°
N
15.2°
Playa de Rodiles
#67 in September
19.8°C
Spain flagVillaviciosa, Asturias, Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
14.8°
J
17.2°
J
19.7°
A
20.9°
S
19.8°
O
17.8°
N
15.6°
Playa del Silencio
#68 in September
19.8°C
Spain flagAsturias (Cudillero), Spain
● Refreshing / Invigorating
NOAA Season Curve (May–Oct):
M
15.9°
J
18.5°
J
20.2°
A
20.8°
S
19.8°
O
17.5°
N
15.2°
Playa de Rodas
#70 in September
17.8°C
Spain flagGalicia (Rías Baixas / Cíes Islands), Spain, Spain
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
15.5°
J
17.2°
J
18.0°
A
18.5°
S
17.8°
O
16.2°
N
14.8°
Rodas Beach
#71 in September
17.0°C
Spain flagCíes Islands, Spain
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
15.2°
J
16.5°
J
17.0°
A
17.2°
S
17.0°
O
16.4°
N
15.4°
Praia da Lanzada
#72 in September
16.9°C
Spain flagO Grove, Galicia, Spain
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
15.2°
J
16.4°
J
16.9°
A
17.1°
S
16.9°
O
16.3°
N
15.3°
Praia de Carnota
#73 in September
16.6°C
Spain flagCarnota, Galicia, Spain
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
14.9°
J
16.1°
J
16.7°
A
17.0°
S
16.6°
O
16.3°
N
15.4°

Explore Sea Temperatures by Country

Spain(23.7°C)Italy(25.9°C)Turkey(27.3°C)France(22.4°C)Greece(25.4°C)Cyprus(27.7°C)Croatia(25.2°C)Albania(25.5°C)Montenegro(25.7°C)Malta(26.7°C)Bulgaria(25.1°C)Romania(24.7°C)Slovenia(25.4°C)Portugal(20.7°C)Poland(19°C)Sweden(18.3°C)Netherlands(18.5°C)Bosnia & Herzegovina(25.2°C)Monaco(24.6°C)Latvia(18.5°C)Estonia(18°C)Lithuania(18.8°C)Germany(18.6°C)Denmark(18°C)Norway(15.3°C)Belgium(18.7°C)Faroe Islands(10.9°C)United Kingdom(16.1°C)Ireland(15.9°C)Iceland(10.9°C)Finland(16.6°C)