It was written and produced by Danish musicians Remee Sigvardt and Thomas Troelsen and recorded by the trio for their second studio album, Strictly Physical (2007).

[4] Remee also provided backing vocals and rap parts on the song, while Troelsen played keyboards and oversaw the programming of "Hot Summer".

[3] Vocals by Monrose members Mandy Capristo, Senna Gammour, and Bahar Kizil were eventually recorded by Claus Üblacker at the Weryton Studios in Munich, Germany.

[5] Mandy Capristo called the song a "promise" and added: "It instantly raises your spirits, no matter if you're sitting in your car, dancing on the floor or eating ice-cream — "Hot Summer" is just brimful of life.

"[5] "Hot Summer" received a generally positive reception from music critics who complimented the song for its hit qualities as well as Monrose's decision to break away from the pop sound of previous releases.

"[6] Although a twenty-second clip of "Hot Summer" was previewed on the ProSieben network's daily gossip television magazine taff on 24 May 2007, the full song was not premiered until Monrose's performance during the season finale of the second cycle of Germany's Next Topmodel a few hours later.

[9] Officially released on 29 June 2007, both the CD single as well as the digital single contained remixes by British-born DJ Tai Jason, Tomas Schmidt and Zafer Kurus from production team Beathoavenz, Patrick Flo Macheck of production team Mozart & Friends and German trio Nachtwandler, consisting of Christoph Riebling, Jens Klingelhöfer, and Patrick Ruhrmann.

[10] In addition, previously unreleased recording "Scream", written by Charlie Mason, Karl Johan Rasma, Pelle Lidell, and Sebastian Larsson, was included on the CD single.

[13] One of the biggest-selling songs of the year on German online music stores,[1] it was eventually certified gold by the Bundesverband Musikindustrie (BVMI) for sales in excess of 150,000 copies.

[23] A performance video that is built around different settings, it is primarily composed of individual close shots and dance sequences using split screen and bluescreen technique.

Instead, the band is primarily shown dancing in front of white, black, blue and red backgrounds, intercut by several sequences of three male dancers.

[30] The video begins with the group, donning brightly colored outfits, dancing in the middle of the street in front of sports cars and a hot pink tank.

The Korean version of "Hot Summer" was a commercial success, debuting at number five on the Gaon Digital Chart[31] and selling over 375,000 downloads during its release week.

[33] The song also debuted and peaked at number 30 on the inaugural edition of the Billboard K-pop Hot 100 chart, dated 20 August 2011.

[41] Taiwanese pop singer Jolin Tsai covered the song under the title "Hot Winter" for the 2009 album Butterfly.