In his third season, Baldwin and the Seahawks had a very successful year. Baldwin caught a career-high five touchdowns in the 2013 season. In the season opener against the Carolina Panthers, he had a season-high seven receptions for 91 receiving yards. Two weeks later, he had his first receiving touchdown of the season, a 35-yard touchdown pass from Tarvaris Jackson, against the Jacksonville Jaguars. On November 3 against the Tampa Bay Buccaneers, he had six receptions for 75 yards and a touchdown. Overall, in the 2013 regular season, he had 50 receptions for 778 yards and five touchdowns. He finished second on the team in receptions and yards.
Baldwin has a video series on YouTube called "Fresh Files". In the series, he answers questions from fans and talks about recent events in his life. He also talks to other NFL players, most of whom are fellow Seahawks (such as Russell Wilson and Sidney Rice) or Stanford alumni (such as Andrew Luck, Richard Sherman, and Coby Fleener). On November 17, 2013, Baldwin carried the flag of the Philippines onto CenturyLink Field to honor Typhoon Haiyan victims. His grandmother is Filipina and is from Tacloban City. Baldwin is a Christian, and frequently posts about his faith and various Bible verses on his Twitter account. Baldwin is running his own investment firm and serves as an advisor for many organizations in the greater Seattle area.