Portugal · Algarve
Algarve
Sea
68.4°F
Air
–
UV
–
Refreshing
18–23°C
More like this
All beaches · Portugal
Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
54°F
57°F
61°F
64°F
68°F
72°F
75°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
6060.3
5959.4
6059.6
6160.6
6261.8
6463.8
6464.4
6565.2
6564.7
6666.1
6464.2
6161.1
AvgAvg °F
6261.8
6160.6
6060.0
6261.9
6362.9
6665.7
6666.3
6767.5
6666.1
6767.4
6565.5
6362.9
MaxMax °F
6362.7
6262.2
6060.4
6363.0
6463.6
6867.9
6867.9
7070.1
6867.7
6969.4
6666.3
6464.4
Warmest in August (67.5°F). Coldest in March (60.0°F). Comfortable for swimming from June to November.
About Algarve
The Algarve forms the southernmost NUTS II region of continental Portugal, a 4,997-square-kilometre stretch of Atlantic coast spanning 16 municipalities from the Spanish border to Cabo de São Vicente. Honey-coloured limestone cliffs drop into sheltered coves between Lagos and Albufeira, while the eastern Sotavento opens onto long, flat sandbar beaches behind the Ria Formosa lagoon. Atlantic sea temperatures peak between 21 and 23 °C from July through September, milder than the Mediterranean but reliably swimmable through early autumn.