"Since May, little by little, we have begun to return, at first cautiously for a day, then two, then three," explained one European ambassador to Syria who has been based in Beirut since December 2012.
"Now we are going once or twice a month," the ambassador added.
Much of the diplomatic corps based in Damascus left the city last December.
More than 120,000 people have been killed in Syria's 32-month conflict, which also has forced millions to flee their homes.
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Some even attended a briefing earlier this week with Deputy Foreign Minister Faisal Muqdad.
The diplomats are constrained by EU sanctions which bar contact with 179 Syrian officials accused of supporting a brutal government crackdown against the opposition.
The blacklist was drawn up as part of EU sanctions against the Syrian regime in response to its suppression of peaceful demonstrations which began in March 2011.
"The EU never asked its members to close their embassies. It was more a gesture of support to the opposition, initiated by the 'Friends of Syria'," the ambassador said, referring to a group of nations which back the Syrian uprising.
The group, which has met regularly to pledge support to the opposition, includes France, Britain, Germany and the Netherlands, all of which have expelled Syrian ambassadors.
The trend comes as the international community prepares for a peace conference slated for January 22 in Geneva, which the diplomat said could speed up the return of envoys.
"Geneva will be a good reason for them to return. They can say that the political situation has now changed, so we can come back," he added.