Temperatures reached at least 42ºC in parts of Andalucía yesterday (Monday) and are expected to do likewise today, whilst in the Canary Islands and most of the rest of the mainland, the mercury soared to 38ºC in the shade.
Those sweltering the most, other than the Guadalquivir and Guadiana districts of Andalucía, were the north-western region of Galicia, the Basque Country, and the river Tajo area in the centre of the country.
They are likely to see a similar situation today (Tuesday) and this could affect the provinces of Cuenca and Albacete in Castilla-La Mancha, the northern region of Navarra, the Ebro valley in Catalunya, and the eastern parts of Andalucía especially Granada, as well as its inland province of Jaén.
Conversely, the east coast appears to have largely escaped so far, with lower humidity than usual and relatively mild temperatures for the time of year in the provinces of Valencia, Alicante and Castellón.
But they may be hit by the heatwave later, suffering sweltering climes on Wednesday and Thursday when, in theory, the rocketing temperatures are due to have passed.
And the first heatwwave of the summer is still a long way off that of July last year – the thermometers shot up to over 44ºC in many parts of the country after an already-hot June and sudden, rare spike in the mercury mid-May which saw daytime temperatures on the east coast shooting up to over 37ºC in the shade.