While the figure pales in comparison with arrivals in Italy - where more than 96,400 have landed so far this year - Spain is catching up with Greece where 11,713 have arrived by sea in the same timeframe.
So far in 2017, 8,385 people have reached the country by sea, more than triple the number seen at the same time in 2016.
A border guard suffered a broken leg after attempting to stop African migrants from breaking through a security gate in the Spanish city of Ceuta.
The two incidents were the latest evidence of the significant uptick in the number of migrants seeking to make Spain their European point of entry.
However, overall numbers of migrants have fallen by nearly 60% from the same period the previous year.
According to the EU's Frontex border agency, 7,500 immigrants made the crossing to Spain in the first three months of the year, compared with 3,600 in the same period last year.
"It's possible that Spain will outperform Greece this year", according to Millman.
The IOM is not at all opposed to mass immigration, and has in fact given migrants its full support throughout the current crisis.
The International Organisation for Migration said it had found the shallow graves of 29 migrants on a beach in the southern province of Shabwa after they had been buried by survivors.
Officials with IOM say the increase of migration to Spain has likely associated the safety and ease of making it to shore successfully and penetrating borders with the least resistance.
According to the UNHCR representative, Spain has to get ready to protect the needs of those newly arriving, identify people in need of protection and those with special needs, like minors or potential victims of trafficking. It seems like it is safer to go through Morocco to Spain than through Libya.
"It's unpredictable, but we have to prepare for an intense few months of arrivals given the good weather", Inigo Vila, head of the organization's emergency unit, said.