If you’re a fantasy reader, August is about to be a great month! The best fantasy books of August 2025 include titles you won’t want to miss. Award-winning author Louis Sachar makes his adult fantasy debut this month. Hotly-anticipated sequels from K.X. Song, Hannah Nicole Maehrer, and Rachel Howzell Hall are on their way. Plus, plenty of other authors — familiar and new — are casting their own literary spells with creative new releases.
It’s a month of pure reading magic! Check out all our picks for the best fantasy books of August 2025 below.
The Magician of Tiger Castle by Louis Sachar
Release date: August 5
Read it if: You grew up reading Holes and want that whimsy-meets-dark vibe in the best fantasy books of August 2025. Desperate for a marriage alliance, a king demands his magician force the princess to agree.
Publisher’s synopsis: Long ago and far away (and somewhere south of France) lies the kingdom of Esquaveta. There, Princess Tullia is in nearly as much peril as her struggling kingdom. Esquaveta desperately needs to forge an alliance, and to that end, Tullia’s father has arranged a marriage between her and an odious prince. However, one month before the “wedding of the century,” Tullia falls in love with a lowly apprentice scribe.
The king turns to Anatole, his much-maligned magician. Seventeen years earlier, when Anatole first came to the castle, he was regarded as something of a prodigy. But after a long series of failures—the latest being an attempt to transform sand into gold—he has become the object of contempt and ridicule. The only one who still believes in him is the princess.
When the king orders Anatole to brew a potion that will ensure Tullia agrees to the wedding, Anatole is faced with an impossible choice. With one chance to save the marriage, the kingdom, and, of most importance to him, his reputation, will he betray the princess—or risk ruin?
Get it on Amazon, or support your local bookstores through Bookshop.org.
The Deathless One by Emma Hamm
Release date: August 5
Read it if: You’re here for justified rage and vengeance. A murdered princess strikes a bargain with the cunning god of death.
Publisher’s synopsis: Jessamine was raised to be a leader for her people. But when the land is overrun by an incurable plague, she must enter a political marriage to save them all. A union that should have brought hope only brings death as her new husband murders her at the wedding altar and seizes the throne.
But her death is just the beginning. Her spirit is met by the Deathless One, a god of death yearning to return to the mortal plane, and he needs her help. The two of them make a deal. Her life and the return of her kingdom in exchange for his resurrection. But the Deathless One is a known trickster, and a deal with him is one made in blood.
Jessamine knows the Deathless One is a dangerous ally. But the longer they work together, the more she wants him and the less she can stay away. As their connection deepens, soon she wonders if she even wants this contract to end. Perhaps the more appealing throne is the one by his side, but she’d have to turn her back on her people to get it.
Get it on Amazon, or support your local bookstores through Bookshop.org.
Accomplice to the Villain by Hannah Nicole Maehrer
Release date: August 5
Read it if: Humor is a must in the best fantasy books of August 2025. A villain’s assistant finds herself in the middle of a prophecy and magical chaos.
Publisher’s synopsis: Evie Sage didn’t mean to become the right-hand woman to the kingdom’s most terrifying villain. One minute, she was applying for an entry-level position that promised “light paperwork and occasional beheadings,” and the next, she was knee-deep in magical mayhem, murder plots, and an entirely inappropriate crush on her brooding, sharp-jawed, walking disaster of a boss.
Now, with a magical prophecy unraveling, assassins showing up in the break room, and a suspicious amount of frogs wearing crowns, Evie has to figure out how to survive her job without setting the kingdom on fire―or her dignity, which is hanging by a very sarcastic thread.
Being evil-adjacent was never part of the five-year plan. But then again…neither was falling for The Villain.
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The Society of Unknowable Objects by Gareth Brown
Release date: August 12
Read it if: You want to follow covert societies in the best fantasy books of August 2025. Secret agents investigate mystical objects, but they keep their own secrets, too.
Publisher’s synopsis: The world of unknowable objects—magical items that most people have no idea possess powers—has been quiet for decades. But the three current members of a secret society have remained watchful, meeting every six months in the basement of a bookshop in London. They are pledged to protect their archive of magical items hidden away, safe from the outside world—and the world safe from them. But when Frank Simpson, the longest-standing member of the Society of Unknowable Objects, hears of a new artifact coming to light in Hong Kong, he sends Magda Sparks—author by day and newest member—to investigate.
Within hours of arriving in Hong Kong, Magda is facing death and danger, confronted by a professional killer who seems to know all about unknowable objects, specifically one that was stolen from him a decade before. Magda is forced to flee, using an artifact that not even the rest of the Society knows about.
Returning to London, Magda learns hers is not the only secret being kept from the other two members. And that the most pernicious secret is about the nature of the Society’s mission. Her discoveries will lead her on a perilous journey, across the Atlantic to the deep south of the United States, now in pursuit of not an unknowable object, but an unknowable person: the professional killer she first faced in Hong Kong. In doing so, Magda begins to understand that there are even more in the world who are chasing these magical items, and that her own family’s legacy is tied up in keeping all these secrets under wraps.
Magic has always been too powerful to reveal to the world. But Magda will learn there might be something even more powerful. The truth.
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Warrior Princess Assassin by Brigid Kemmerer
Release date: August 12
Read it if: You don’t want a basic love triangle in the best fantasy books of August 2025. An assassin hunts a king and his betrothed, but emotions complicate things between them all.
Publisher’s synopsis: WARRIOR. King Maddox Kyronan’s fire magic has earned him a ruthless reputation on the battlefield. But now his land is slowly burning. Ky’s only chance to save his people is to enter a marriage alliance with the neighboring nation of Astranza, and hope that their royal family’s power to manipulate the weather will help his kingdom flourish once more. He just needs to ensure no one finds out how this blaze began.
PRINCESS. With enemies advancing on Astranza, Princess Jory’s home needs the protection of the fearsome warrior king. But she is hiding a dangerous secret: her family’s magic is fading. Tempting as it is to reject her duties and run away with her childhood friend, Asher, Jory knows that she is the kingdom’s last hope. When she meets her intended, Jory is surprised to discover that beneath Ky’s daunting exterior is a compassionate and sharp-witted man who sets her heart aflame. But what will he do when he realizes she’s deceiving him?
ASSASSIN. Asher’s done what he must to survive, even if that means getting his hands dirty. Once a young nobleman in Astranza’s palace, where he and Jory caused mischief together, now he’s part of the Hunter’s Guild, employing much darker skills. When a lucrative job comes his way, Asher can’t say no—until he discovers the targets. Someone wants Ky and Jory dead. With the Guild watching, Asher must decide what he’s willing to do to protect the woman he loves.
Get it on Amazon, or support your local bookstores through Bookshop.org.
The Dragon Wakes with Thunder by K.X. Song
Release date: August 19
Read it if: You’d like a Mulan retelling with a twist. After winning the war (and paying a personal price), a warrior woman must choose between competing demands on her power and heart.
Publisher’s synopsis: The war may be over, but Hai Meilin is still paying a heavy toll. In spite of securing victory for the kingdom of Anlai, she is imprisoned upon her return. Her crime? Wielding a sword as a woman.
In the palace, Meilin is an outcast and a social pariah. But beyond the imperial walls, the legend of the woman warrior has taken on a life of its own. To the east, a new rebel leader needs Meilin to helm his people’s revolution. In the south, a former enemy prince, now a prisoner of war, seeks Meilin’s aid in restoring balance to the Three Kingdoms. And back home in Anlai, Liu Sky, Meilin’s commander and first love, requires Meilin by his side in his bid for the throne.
Pulled in all directions by those who seek to use her for their own ends, Meilin vows that this time, she will not be so quick to trust. Yet there is one she cannot help but listen to—for he dwells within her.
Beyond any human machinations, the sea dragon Qinglong has his own plans for the spirit realm. During the last war, Meilin wielded his power to cheat death and attain victory for Anlai; now the dragon has come to collect his dues. Meilin’s mother warned her long ago. The spirits demand blood. And Qinglong is ravenous.
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Lessons in Magic and Disaster by Charlie Jane Anders
Release date: August 19
Read it if: You want family relationships at the heart of the best fantasy books of August 2025. A witch teaches her grieving mother magic, with dangerous results.
Publisher’s synopsis: Jamie is basically your average New England academic in-training–she has a strong queer relationship, an esoteric dissertation proposal, and inherited generational trauma. But she has one extraordinary secret: she’s also a powerful witch.
Serena, Jamie’s mother, has been hiding from the world in an old one-room schoolhouse for several years, grieving the death of her wife and the simultaneous explosion in her professional life. All she has left are memories.
Jamie’s busy digging into a three-hundred-year-old magical book, but she still finds time to teach Serena to cast spells and help her come out of her shell. But Jamie doesn’t know the whole story of what happened to her mom years ago, and those secrets are leading Serena down a destructive path.
Now it’s up to this grad student and literature nerd to understand the secrets behind this mysterious novel from 1749, unearth a long-buried scandal hinted therein, and learn the true nature of magic, before her mother ruins both of their lives.
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The Cruel Dawn by Rachel Howzell Hall
Release date: August 19
Read it if: You like morally-murky characters and fallen gods. A betrayed god must defend her realm, even at enormous personal cost.
Publisher’s synopsis: A god’s wrath is unforgettable. Her love, even more dangerous.
Kaivara Megidrail was once worshipped as the Grand Defender of Vallendor―until betrayal, punishment, and exile left her Diminished. Now, the realm she abandoned teeters on the edge of collapse. Monsters roam free. Gods whisper in shadows. And one man―Jadon Wake, prince, blacksmith, liar―may be the key to her salvation…or her final ruin.
Haunted by the past, hunted by divine enemies, and armed with only fractured Memories and an unrelenting will, Kaivara must choose: reclaim her power and face the truth about Jadon, or watch Vallendor fall to a traitorous god’s rising.
The realm called her a destroyer. This time, they’ll learn what she was truly made for.
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The Last Soul Among Wolves by Melissa Caruso
Release date: August 19
Read it if: You’d like the best fantasy books of August 2025 to include interdimensional murder mystery. A Westing Game-esque bequest threatens to kill every heir but one.
Publisher’s synopsis: All Kembral Thorne wants is to finish her maternity leave in peace. But when her best friend asks for help, she can’t say no, even if it means a visit to a run-down mansion on an isolated island for a will reading. She arrives to find an unexpected reunion of her childhood friends—plus her once-rival, now-girlfriend Rika Nonesuch, there on a mysterious job. Then the will is read, and everything goes sideways.
Eight potential heirs, half of them Kem’s oldest friends. Three cursed relics.
The rules: one by one, the heirs will die. The prize for the lone survivor: A wish. And wishes are always bad business.
To save their friends, Kem and Rika must race against the clock and descend into other realities once more. But the mansion is full of old secrets and new schemes, and soon the game becomes far more dangerous—and more personal—than they could have imagined.
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Hemlock & Silver by T. Kingfisher
Release date: August 19
Read it if: You’re in the mood for a Gothic fairytale retelling. An unorthodox healer discovers a secret mirror world as she seeks to cure a dying princess.
Publisher’s synopsis: Healer Anja regularly drinks poison.
Not to die, but to save―seeking cures for those everyone else has given up on.
But a summons from the King interrupts her quiet, herb-obsessed life. His daughter, Snow, is dying, and he hopes Anja’s unorthodox methods can save her.
Aided by a taciturn guard, a narcissistic cat, and a passion for the scientific method, Anja rushes to treat Snow, but nothing seems to work. That is, until she finds a secret world, hidden inside a magic mirror. This dark realm may hold the key to what is making Snow sick.
Or it might be the thing that kills them all.
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The Sea Witch by Eva Leigh
Release date: August 26
Read it if: You’d like Pirates of the Caribbean vibes among the best fantasy books of August 2025. A witch flees persecution and turns pirate, then forges a reluctant alliance with an uptight navigator.
Publisher’s synopsis: Condemned as a witch, sentenced to die, Alys Tanner uses her innate magical power to flee Puritanical New England. Stealing a ship, Alys becomes captain of The Sea Witch, leading its all-female, sorcery-wielding pirate crew. But the colonial British navy is in hot pursuit. The navy fights for a choke hold on the Caribbean and will destroy anything they cannot control, especially witches.
When Ben Priestley, a headstrong naval navigator, is inadvertently captured by the lady pirates, dangerous truths are revealed. A quest that could turn the tides against the navy’s might ignites a reluctant partnership between the by-the-books prisoner and the fierce witch pirate captain. While they brave backstabbing pirates, perilous tropical islands and monster-filled seas, Alys and Ben’s mistrust grows into unexpected desire as they battle an enemy that will stop at nothing to rule the waves.
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Katabasis by R.F. Kuang
Release date: August 26
Read it if: You’d love some myth-tinged dark academia in the best fantasy books of August 2025. Rival magicians brave Hell to rescue their late mentor.
Publisher’s synopsis: Alice Law has only ever had one goal: to become one of the brightest minds in the field of Magick. She has sacrificed everything to make that a reality: her pride, her health, her love life, and most definitely her sanity. All to work with Professor Jacob Grimes at Cambridge, the greatest magician in the world.
That is, until he dies in a magical accident that could possibly be her fault.
Grimes is now in Hell, and she’s going in after him. Because his recommendation could hold her very future in his now incorporeal hands and even death is not going to stop the pursuit of her dreams….
Nor will the fact that her rival, Peter Murdoch, has come to the very same conclusion.
With nothing but the tales of Orpheus and Dante to guide them, enough chalk to draw the Pentagrams necessary for their spells, and the burning desire to make all the academic trauma mean anything, they set off across Hell to save a man they don’t even like.
But Hell is not like the storybooks say, Magick isn’t always the answer, and there’s something in Alice and Peter’s past that could forge them into the perfect allies…or lead to their doom.
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