Chris Hemsworth shows off his toned physique after arriving home to Byron Bay from an appearance at San Diego Comic-Con ahead of his 41st birthday

Chris Hemsworth proved he’s still in the prime of his life on Saturday when he showed off his incredibly muscular physique in honor of his 41st birthday this week.

The handsome Australian actor, who stars in the upcoming animated film Transformers One, spent the day surfing in his hometown of Byron Bay.

The Thor star showed off his excellent form as he was spotted shaving through the waves like a pro after returning from San Diego Comic-Con in the US.

Chris showed off his toned abs and muscular biceps as his sandy blonde locks flowed in the wind.

With a surfboard under his arm, the Hollywood star enjoyed his midwinter surfing session with his good friend and personal trainer Luke Zocchi.

He had the most fun laughing with his buddy, who often helps Chris with his figure at the gym.

Just hours before his beach trip, Chris was spotted arriving at Sydney airport following his trip to the US.

Chris made his long-awaited return to San Diego Comic-Con on Thursday to debut the new trailer for his animated film Transformers One.

Chris Hemsworth, 41, (pictured) proved he’s still in the prime of his life on Saturday as he showed off his incredibly toned physique to mark his 41st birthday this week

The handsome Australian actor, who stars in the upcoming animated film Transformers One, spent the day surfing in his hometown of Byron Bay

The handsome Australian actor, who stars in the upcoming animated film Transformers One, spent the day surfing in his hometown of Byron Bay

The Thor star put his very fit form to good use and was spotted slicing through the waves like a pro after returning home from San Diego Comic-Con in the US

Chris had a look of complete concentration as he donned a wetsuit and jumped into the water

The Thor star put his very fit form to good use and was spotted slicing through the waves like a pro after returning home from San Diego Comic-Con in the US

With his sandy blonde locks tousled as they blew in the wind, Chris wasn't shy about showing off his toned abs and muscular biceps

With his sandy blonde locks tousled as they blew in the wind, Chris wasn’t shy about showing off his toned abs and muscular biceps

With a surfboard under his arm, the Hollywood star enjoyed his midwinter surfing with his good friend and personal trainer Luke Zocchi (right)

With a surfboard under his arm, the Hollywood star enjoyed his midwinter surfing with his good friend and personal trainer Luke Zocchi (right)

He had the biggest smile on his face as he laughed with his buddy who often helps Chris improve his figure at the gym

He had the biggest smile on his face as he laughed with his buddy who often helps Chris improve his figure at the gym

Chris carried his large surfboard under his arm as he showed off his gym-toned torso

Chris carried his large surfboard under his arm as he showed off his gym-toned torso

He was a longtime fixture in Hall H at the San Diego Convention Center when he starred as Thor in the Marvel Cinematic Universe films.

The actor returned for Transformers One, Paramount’s animated prequel to the Transformers franchise, hitting theaters September 20.

During the panel in Hall H, he was joined by co-stars Brian Tyree Henry (D-16), Keegan-Michael Key (B-127) and director Josh Cooley.

The Hollywood star appeared engrossed in conversation with his friend

The Hollywood star appeared engrossed in conversation with his friend

At one point he was seen cradling his board between his legs as he slid into the top of his wetsuit

At one point he was seen cradling his board between his legs as he slid into the top of his wetsuit

The long black suit covered him completely from ankle to wrist

The long black suit covered him completely from ankle to wrist

Just hours before his trip to the beach, Chris was spotted landing at Sydney airport after his trip to the US

Just hours before his trip to the beach, Chris was spotted landing at Sydney airport after his trip to the US

Chris made his long-awaited return to San Diego Comic-Con on Thursday to show off the new trailer for his animated film Transformers One

Chris made his long-awaited return to San Diego Comic-Con on Thursday to show off the new trailer for his animated film Transformers One

The actor was a longtime fixture in Hall H at the San Diego Convention Center when he starred as Thor in the Marvel Cinematic Universe films

The actor was a longtime fixture in Hall H at the San Diego Convention Center when he starred as Thor in the Marvel Cinematic Universe films

Chris returned to San Diego Comic-Con for Transformers One, Paramount's animated prequel to the Transformers franchise, which hits theaters September 20

Chris returned to San Diego Comic-Con for Transformers One, Paramount’s animated prequel to the Transformers franchise, which hits theaters September 20

The latest trailer was first shown to fans at the convention.

Chris took the stage in Hall H of the San Diego Convention Center wearing a white T-shirt under a white short-sleeved shirt and a long gold chain.

Together with his fellow actors and the director, he discussed the film and unveiled the latest trailer.

The clip shows how Optimus Prime – then known as Orion Pax – and Megatron – then D-16 – were the best of friends.