Only Thor can produce lightning without Mjolnir. But the point of carrying Mjolnir means whoever carried it are worthy to be the king of Asgard and gets the power of the God of Thunder. But if someone wields the hammer and if Thor is still worthy of wielding the hammer, than the 'someone' couldnt produce lightning.
There are very few powers that Mjolnir grants him, but it does seem to amplify his connection to the Odinforce at all times, and accordingly, powers him up. Still, most of Thor's powers can be performed without Mjolnir. Depending on the iteration, though, Mjolnir can disguise Thor as a mortal.
Comic book Thor has control over the weather but needs his hammer for refine that control. Here's an example. He had been captured and kept without his hammer by the planet of Angels. It took a while but he summoned a storm to free himself.
Does Thor need his hammer to summon lightning Norse mythology?
Thor also used it for directing his summoned elements, such as lightning, wind, rain, and snow. It was later revealed that Thor's lightning abilities never originated from Mjølnir, but rather it was a tool to help him focus and hones his powers until he was able to master his power and freely wield it.
THOR: RAGNAROK (2017) Movie Clip - God of Thunder | Marvel Studios HD
Is Stormbreaker stronger than Mjolnir?
Powers and characteristics
Stormbreaker has the additional power to summon the Bifröst, allowing Thor to teleport anywhere in the Nine Realms. Screen Rant has identified Stormbreaker as the more powerful of the two, based on this ability, as well as it being a much larger and edged weapon.
True, some of his more exotic powers – such as weather control and flight – are dulled or even denied him when he can't use his hammer to focus them, but he doesn't seem to lose any appreciable strength or durability when he doesn't have his hammer.
While no one besides Thor has been able to truly wield the awesome might of Stormbreaker, Groot was the very first being to hold this weapon when one of his arms became the handle for the mighty axe.
Why does Thor like Mjolnir more than Stormbreaker?
It may be weaker than Stormbreaker in the Marvel Cinematic Universe's lore, but Mjolnir carries the bigger legacy since it holds a deeper meaning to Thor and anyone was worthy enough to wield its power.
After Thor reclaimed Stormbreaker, Thor allowed Axl Heimdallson to use it to bring the Asgardian children back home. Weapon Summoning: When thrown, Stormbreaker returns to Thor's hand when he summons it. Flight: Stormbreaker allows its user to fly through the air without to spin it like Mjølnir.
By most accounts, Superman seemingly outclasses Thor in terms of raw strength, especially in earlier versions of the DC Universe. He's pulled planets, punched people into orbit, and performed all sorts of wild feats of strength.
Loki is confirmed to be worthy of lifting Thor's hammer, Mjolnir, for the first time in official Marvel canon. In The Immortal Thor #5, Loki confidently catches and wields the hammer, showcasing his growth and heroism.
On their own, both these noble heroes are capable of beating incredible forces. But for all Shazam's power, he does not match Thor's experience in using the more arcane elements of his abilities.
Odin is basically Thor and all the other Asgardians rolled into one—though he's even wiser, more experienced, and minus one eye. As the default King of Asgard, Odin is easily the most powerful being in his realm.
Summary. Thor's recent power boost in Immortal Thor #2 comes with a significant weakness, known as the All-Sleep. Thor's newfound ability to manipulate time and space makes him the All-Father, with all of Odin's power now belonging to him.
According to Thor #363, wearing his Belt of Strength doubles Thor's natural power but its use drains him so severely that he would barely be able to walk once he removed it. This weakness has not been mentioned or observed in any other stories.
Storm breaker is meant to be the strongest weapon of Asgard and could even summon bifrost, says Eitri. But there is no enchantment or spell on it like it was on Mjolnir. So one doesn't have to be worthy to weild it, just the strength to lift it. Clearly Thanos is capable of lifting it.
Can Infinity War Thor with Stormbreaker beat Endgame Thanos without the Infinity Gauntlet? No he cannot. However L&T Prime Thor with or without Stormbreaker would curbstomp Thanos. He's far too strong for Thanos in his L&T Prime.
Many viewers have pointed out that Thanos was able to lift Stormbreaker without a problem, but this is because the ax isn't enchanted as Mjolnir is. Others believe Thanos lifted Mjolnir (although briefly) and have even argued that he would be worthy of doing so.
Thor's hammer Mjolnir was defined by the fact that only the 'worthy' could lift it – so basically no-one except the god of thunder (and Vision, for some reason). But when it comes to the weapon's replacement, Stormbreaker – which Thor forges in Avengers: Infinity War – Groot is able to lift it too.
During a Vudu Viewing Party for Avengers: Infinity War, co-directors Anthony and Joe Russo revealed a key difference between Thor's hammer Mjolnir and his new ax Stormbreaker: the latter doesn't require worthiness. That's why Groot was able to lift the ax, not because he was worthy but because he didn't need to be.
The answer might be two-fold: Captain America is a super-soldier and had the strength to hold Mjolnir before. If holding Stormbreaker is a matter of simple strength, then Captain America wielding it is all the more impressive.
Steve Rogers is one of the few mortals able to not only lift Mjolnir, but wield its full power, making him someone who legitimately could defeat Thor. Assuming the reason for their battle is due to Thor being deceived, possessed, or otherwise out of his mind, Cap would be able to use Mjolnir against him.
Thor has already gotten the power to wield Mjolnir at the end of Thor 1. So Thor now has the ability to produce lightning internally. So Thor is the God of Thunder. Only Thor can produce lightning without Mjolnir.
But to answer your question more directly, yes, he can. In the comics, Thor has been shown to have the ability to travel through space without the Bifrost, thanks to his innate Asgardian powers and his connection to the magical energies of his world.
