Spain registered record sea temperatures for the month of May along much ​of its coastline, the country’s port ‌authority said on Tuesday, as the UN forecast a moderate or possibly strong El Nino, ​which could drive up global temperatures ​in coming months.

Twelve out of 15 ⁠deep-water buoys recorded their highest-ever temperatures ​for the month of May, as well ​as six out of 14 buoys along the coast, according to the Spanish port authority.

Human-caused ​climate change was behind the phenomenon, ​said Ruben del Campo, spokesperson for Spanish weather agency ‌AEMET.

“Over ⁠the last decade, there have been just seven record-breaking cold days, whereas we have had 221 record-breaking hot days,” ​del Campo ​said, adding ⁠that this reflected a constant rise in global average temperatures.

However, ​del Campo added, May’s record ​sea ⁠temperatures were unrelated to El Nino, which will potentially begin to emerge in ⁠the ​Pacific in the coming ​months and reach its peak in October and November.