In 1415, during theWar of the Bands, thecorregidor, the royally-appointed governor of the Biscayanhermandad, acting on royal orders, siphoned off Biscayan wheat to theAsturias, inciting a rebellion. The Biscayans were defeated at Erandio with the loss of sixty men and the wheat transfers continued.
Saint Lawrence's feasts in Astrabudua use to involveidi probak (traditional dragging competitions with oxen).
The main festivals arePatronal festivals (fiestas patronalesin Spanish) (patronage festivals, held in the days around the date dedicated to thepatron saints under whose advocation churches and hermits are).
The local public holiday of the municipality rotates yearly on August 10, August 28 and thecorpus Christi day.[2]
August 15,Andra Maria (Our Lady Mary) in Erandio Goikoa (August 15, the day of the Assumption of the Virgin Mary is a public holiday in Spain).
August 17 and 18:Saint Mammes in Santimami (Saint Mammes' hermit lies on the municipal border and most of the festival acts are held onLeioa's ground).
Erandio has also celebrated a street music festival calledMusikale, with music bands marching and playing in the neighbourhoods of Altzaga and Astrabudua. Musikale had been originally conceived in the neighbouring municipality of Leioa. For some years it was held simultaneously in Leioa, Erandio, Basauri and Sestao, but the other municipalities dropped it, and in 2013 only Erandio organised it.[3]
Other public festivals celebrated in September are the recreation of a traditional rural Basque wedding in Astrabudua, andErandio Magikoa and open-air Festival of Magic held in different neighbourhoods.
While Asua and Erandio Goikoa are just 3 Km away fromBilbao Airport, other parts of the municipality, like Astrabudua are more than 6 Km away. There is no direct public transport from Erandio to the passenger's terminal, though buses can be taken in the neighbouring municipalities of Loiu and Bilbao.
There are several bridges over the minor rivers, such asAsua, but there is currently only one bridge over theEstuary of Bilbao, formed by theIbaizabal -Nervión river, theRontegi bridge only for motorised vehicles.
There is a project for a pedestrian bridge, which will be calledAll Iron Zubia between Erandio and Barakaldo.
Erandio was also connected to Barakaldo by fluvial passenger transport over the Estuary, first by rowing boats, and since the 20th century[5] in motorised boats, which were popularly known asgasolino. Regular fluvial transport service was interrupted in February 2024, due to economic difficulties caused by the rise of fuel prices and the competence of land public transport,[6][7] though private boats are occasionally hired for leisure travel along the estuary.