Climate - Sea Water Temperature 2026

Here I will have a look at the evolution of the sea water temperatures. As I started this topic last year, I have reused some parts. Here you can see the data source I have used. I have executed the loading Workflow again and now have data until May 22 2026.

I wanted to have a closer look at the temperatures in the Western part of the Mediterranean Sea. To do so, I reused some geocoding techniques I have used before . However, the area I want to look at is now somewhat larger (see below)

In the Workflow below I have selected the data points from the sea_water_temperature table that lie within the polygon drawn above (this happens in the Spatial Join node), selected the top 10 highest temperature values and plotted them on a Map.

As you can see on the Map below, 6 out of the 10 'warm spots' are in an area around the Balearic Islands. The maximum temperature - to the North of Mallorca - was 22,19 degrees Centigrade recorded on May 21. Remember I have only data available until end of May of the current year.

It will be interesting to see this again when the Summer data becomes available.

In the mean time, I will try to compare these values with the values for the same period in past years (coming up...)

I have now loaded my dataset with the latest data available from Copernicus - up till June, 6 2026 and then ran the same workflow as above. It seems the 'hot spots' are moving from East to West. The warmest spot in my area is now south of Alicante, 22,94 degrees Centigrade.