Sea off Mallorca in summer 2026: 1.8 degrees warmer than average
Wetter Mallorca editorial team · · 2 min read
The sea off Palma was clearly warmer than usual in summer 2026: from June to August the surface temperature averaged 26.9 °C, 1.8 degrees above the 2011 to 2025 mean. That is what the daily OISST analysis from the American agency NOAA, built from satellite, ship and buoy data, shows.
How warm the sea off Mallorca was in summer 2026 can be answered with the same data behind the averages on Wetter Mallorca: the daily NOAA OISST analysis, downloaded from NOAA CoastWatch ERDDAP. The figures cover one grid cell of open sea at the entrance to the Bay of Palma. They are an analysis of the surface built from satellite, ship and buoy data, not a reading taken on a beach.
The summer months off Palma compared
- June: 23.8 °C, against a 2011 to 2025 mean of 22.7 °C. Up 1.1 degrees, based on 29 of 30 days.
- July: 27.9 °C, against a mean of 25.7 °C. Up 2.2 degrees, based on 30 of 31 days.
- August: 28.9 °C, against a mean of 26.9 °C. Up 2.0 degrees, based on all 31 days.
The dataset has no value for 8 June or 18 July. Across the whole summer, 90 of 92 days, that gives 26.9 °C against a mean of 25.1 °C. The jump in July stands out: already in July 2026 the sea was warmer than an average August.
Peaks in the sea off Palma
The highest daily value came on 7 August, at 29.9 °C. On 40 days between June and August the surface was at 28 °C or more. These values describe open water, and the temperature at individual beaches can differ.
The sea off Mallorca in September
NOAA has published September values up to 22 September. Those 22 days average 27.5 °C. Comparing that with the full-month mean of 25.9 °C would be misleading, because the second half of the month is still missing. It remains to be seen how quickly the sea cools in the autumn.
What summer 2026 means for the sea off Mallorca
The reading is clear: the gap to the mean widened from June to July and stayed high in August. The usual water temperature for every month and three stretches of coast is on the sea temperature page. August air temperatures are on the August weather page, and every month is on the climate table. Averages are not a forecast for the next beach day.
Frequently asked questions
How warm was the sea off Mallorca in summer 2026?
Off Palma the surface temperature averaged 26.9 °C from June to August, 1.8 degrees above the 2011 to 2025 mean, according to NOAA OISST.
When was the sea off Palma warmest in summer 2026?
On 7 August, at 29.9 °C. Overall the surface was at 28 °C or more on 40 days of the summer.
How warm was the sea off Mallorca in August 2026?
It averaged 28.9 °C, 2.0 degrees above the 2011 to 2025 mean of 26.9 °C.
Do the figures apply to beaches in Mallorca?
Only partly. The data is an analysis of open sea off the Bay of Palma built from satellite, ship and buoy data. Individual beaches can differ.
Text written with AI and automatically checked against editorial rules before publication. Figures come from the linked sources. Wetter Mallorca is not an official weather service.
