Rotten Tomatoes had a good list.
They listed a set of their picks for the...
Top 60 Worst Summer Movies(all these came in the summer and since 1975, since
Jaws more or less kickstarted the summer blockbuster. All movies will be listed with their respective percentages of positive critical reviews)
#60: Bratz: the Movie (2007) (9%)
#59: Marmaduke (2010) (9%)
#58: Catwoman (2004) (9%)
#57: Revenge of the Nerds 2: Nerds in Paradise (1987) (8%)
#56: Problem Child 2 (1991) (8%)
#55: The Next Karate Kid (1994) (8%)
#54: Spy Hard (1996) (8%)
#53: See No Evil (2006) (8%)
#52: Summer Catch (2001) (8%)
#51: Post Grad (2009) (8%)
#50: The New Guy (2002) (8%)
#49: Gone Fishin' (1997) (7%)
#48: House Arrest (1996) (7%)
#47: Ghost Dad (1990) (7%)
#46: In the Army Now (1994) (7%)
#45: From Justin to Kelly (2003) (7%)
#44: Undiscovered (2005) (7%)
#43: License to Wed (2007) (7%)
#42: All About Steve (2009) (7%)
#41: Solo (1996) (6%)
#40: Kazaam (1996) (6%)
#39: Who's Your Caddy? (2007) (6%)
#38: Supercross (2005) (6%)
#37: I Know Who Killed Me (2007) (6%)
#36: Grown Ups 2 (2013) (6%)
#35: Underclassman (2004) (6%)
#34: Babylon A.D. (2008) (6%)
#33: The Perfect Man (2005) (6%)
#32: Gigli (2003) (6%)
#31: The Last Airbender (2010) (6%)
#30: Caddyshack 2 (1988) (5%)
#29: Cocktail (1988) (5%)
#28: College (2008) (5%)
#27: The Cookout (2004) (5%)
#26: Delta Farce (2007) (5%)
#25: Universal Soldier - the Return (1999) (5%)
#24: The Adventures of Pluto Nash (2002) (5%)
#23: Serving Sara (2002) (5%)
#22: Mobsters (1991) (4%)
#21: Problem Child (1990) (4%)
#20: Getting Even With Dad (1994) (4%)
#19: Material Girls (2006) (4%)
#18: Vampires Suck (2010) (4%)
#17: Zoom (2006) (3%)
#16: Speed 2: Cruise Control (1997) (3%)
#15: Deuces Wild (2002) (3%)
#14: fear dot com (2002) (3%)
#13: Bless the Child (2000) (3%)
#12: The In Crowd (2000) (2%)
#11: Crossover (2006) (2%)
#10: Battlefield Earth (2000) (2%)
#9: Disaster Movie (2008) (1%)
#8: Daddy Day Camp (2007) (1%)
#7: The Master of Disguise (2002) (1%)
#6: Staying Alive (1983) (0%)
#5: Jaws: the Revenge (1987) (0%)
#4: Mac and Me (1988) (0%)
#3: Return to the Blue Lagoon (1991) (0%)
#2: Wagons East (1994) (0%)
#1: Superbabies: Baby Geniuses 2 (2004) (0%)
www.rottentomatoes.com/guides/worst_summer_movies/