[9] On 14 November 2005,[10] a remastered edition of Just for a Day was issued by the Sanctuary Records subsidiary label Castle Music, supplemented by an extra disc containing tracks from the band's first three EPs: Slowdive, Morningrise and Holding Our Breath.

[25] Jon Ridge, reviewing Just for a Day for Lime Lizard magazine, thought that the album was premature, describing it as "more a continuation, or aqueous celebration rather, than an advancement" compared to the band's "rather spiffing" previous EPs.

[26] Dan Maier of Select found Slowdive "too direct" in their musical approach, writing that they "just sing slowly, play fuzzy, and end up sounding like the Cocteau Twins with ballast.

[17] In a retrospective essay, Trouser Press deemed the material on Just for a Day inconsistent, but concluded that "the songs that are solid are breathtaking, and those that aren't are at least hypnotic and slowly sensuous.

"[28] Reappraising the album in 2005 for Pitchfork, Nitsuh Abebe said that "if anything in Slowdive's catalogue will seem dated, it's the overgroomed production on these songs", while nonetheless noting a "terrifically oceanic" quality to Just for a Day as a whole.