On Friday afternoon a small cohort of protesters marched as part of the "Youth for Climate" demonstration, with just 60 people gathering at the Glacis.
Organisers said they had hoped for several hundred protesters at the very least. Previous demonstrations in past years saw crowds of thousands gather to march against climate change.
Youth for Climate Luxembourg said the goals and demands were unchanged from 2019, given the lack of political action.
The organisation has two key demands of the Luxembourg government, namely the goal of climate neutrality by 2030, and a reduction in fossil fuel investments.
The organisers said it was a point of frustration that there had been little to no progress over the past three years, but vowed to step up pressure ahead of the looming election year.
It is thought the lack of protesters is due to the fact the climate crisis is no longer at the forefront of the public's thoughts, said organisers on Friday.
Previous protests were more popular despite pandemic restrictions, but now, topics such as the Russia-Ukraine war and inflation are occupying people's minds.
The date could also have played a part, being the first Friday back at school, which left the organisation little time to promote the march and spread awareness to pupils. However, the date was set at a global level, explained the organisers, which left the decision out of their hands.
Friday's march promoted the message "People, not profit".
Thousands of people turned out for marches in Germany, with 22,000 Berlin residents taking to the streets to throw weight behind their demands for a 100 billion euro climate budget. Protesters also called for the €9 train ticket scheme to be extended beyond the summer to promote travel using public transport.