Spain · Formentera
Ses Illetes
Sea
—
Air
—
UV
—
More like this
Climate · monthly averages
Sea temperature by month
30-year averages (1996–2025). Min/Max are typical daily lows and highs, not record extremes.
50°F
57°F
64°F
72°F
79°F
86°F
January
59.2°F(58°F–61°F)
February
58.0°F(57°F–59°F)
March
58.6°F(57°F–60°F)
April
61.1°F(60°F–63°F)
May
65.8°F(64°F–68°F)
June
72.5°F(71°F–75°F)
July
78.0°F(76°F–81°F)
August
80.1°F(78°F–83°F)
September
77.8°F(77°F–79°F)
October
73.0°F(71°F–75°F)
November
66.8°F(65°F–69°F)
December
61.7°F(60°F–63°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 | 5857.9 | 5756.6 | 5757.2 | 6059.6 | 6464.1 | 7170.6 | 7675.9 | 7878.1 | 7776.6 | 7170.6 | 6564.8 | 6059.8 |
| AvgAvg °F | 5959.2 | 5858.0 | 5958.6 | 6161.1 | 6665.8 | 7372.5 | 7878.0 | 8080.1 | 7877.8 | 7373.0 | 6766.8 | 6261.7 |
| MaxMax °F | 6160.6 | 5959.5 | 6059.9 | 6362.7 | 6867.5 | 7574.9 | 8181.1 | 8382.7 | 7979.5 | 7574.9 | 6968.7 | 6363.3 |
Warmest in August (80.1°F). Coldest in February (58.0°F). Comfortable for swimming from May to November.
About Ses Illetes
On the Trucadors peninsula at Formentera's northern tip, Ses Illetes fronts a Posidonia oceanica seagrass meadow declared UNESCO World Heritage in 1999 and counted among Earth's oldest organisms at roughly 100,000 years — the reason for the water's clarity. Platja de Llevant shares the same dune ridge on its east-facing flank, two seas a few hundred metres apart, while Platja Migjorn runs seven kilometres along the south coast. Sea temperatures hold between 25 and 27 °C from July through September; Ibiza airport is a thirty-minute ferry from La Savina.