What books are similar to The Sea of Monsters?

The 10 closest matches to The Sea of Monsters by Rick Riordan on ReadingList include The Lightning Thief (Percy Jackson and the Olympians, Book 1), The Maze of Bones, Because of Winn-Dixie, Deep and Dark and Dangerous, and Stolen Children. Each is scored on shared themes, shared award lists, genre, and reading level (grades 4–6), and links to the curricula, states, and grades where it is assigned in US schools, with primary sources.

Are books like The Sea of Monsters reading-level appropriate?

Yes — every match is a reading-level match, not just a topical one, scored on Lexile and grade band (grades 4–6), so the picks stay grade-appropriate. See how ReadingList judges text difficulty on the /standard methodology page.

How does ReadingList choose similar books?

Matches are ranked by shared themes, shared award and reading-program lists (two books picked for the same state award were chosen by the same committees for the same readers), same genre, comparable Lexile and grade band, and publication decade — computed from cited public curriculum data, not editorial opinion or AI-generated summaries.

Books like The Sea of Monsters

If you liked The Sea of Monsters, read The Lightning Thief (Percy Jackson and the Olympians, Book 1), The Maze of Bones, or Because of Winn-Dixie — the closest matches in our database, matched on shared award lists and reading level.

Looking for books like The Sea of Monsters by Rick Riordan? The 10 titles below are the closest matches in the ReadingList database — each scored on shared themes, shared award lists, genre, and reading level, and each linked to the curricula, states, and grades where it’s assigned, with primary sources.

These are reading-level matches, not just topical ones — so the picks stay grade-appropriate for a grades 4–6 reader. See how we judge text difficulty on our methodology page.

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Why each is a match

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The Lightning Thief (Percy Jackson and the Olympians, Book 1)740L: Is by Rick Riordan, the same author, both on the Mark Twain Readers Award list (+1 more shared list), and overlapping grades (4–7). Amazon → books like this →
The Maze of Bonesgrades 3–8: Is by Rick Riordan, the same author, overlapping grades (3–8), and the same era (2000s). Amazon → books like this →
Because of Winn-Dixie610L: Both on the Mark Twain Readers Award list (+1 more shared list), overlapping grades (3–5), and the same era (2000s). Amazon → books like this →
Deep and Dark and Dangerousgrades 4–6: Both on the Mark Twain Readers Award list (+1 more shared list), overlapping grades (4–6), and the same era (2000s). Amazon → books like this →
Stolen Childrengrades 4–6: Both on the Mark Twain Readers Award list (+1 more shared list), overlapping grades (4–6), and the same era (2000s). Amazon → books like this →
The City of Embergrades 4–6: Both on the Mark Twain Readers Award list (+1 more shared list), overlapping grades (4–6), and the same era (2000s). Amazon → books like this →
Wenny Has Wingsgrades 4–6: Both on the Mark Twain Readers Award list (+1 more shared list), overlapping grades (4–6), and the same era (2000s). Amazon → books like this →
A Million Ways Homegrades 4–6: Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6). Amazon → books like this →
Blended610L: Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (3–7). Amazon → books like this →
Escape from Mr. Lemoncello's Librarygrades 4–6: Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6). Amazon → books like this →

Books like The Sea of Monsters for elementary readers (grades 3–5)

Closest matches whose grade range overlaps 3–5— same scoring, different audience.

Millionaires for the Month by Stacy McAnulty · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).
One for Sorrow by Mary Downing Hahn · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).
Out of My Mind by Sharon M. Draper · 700L — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–7).
Runaway Twin by Peg Kehret · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).
Six Feet Below Zero by Ena Jones · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).

Books like The Sea of Monsters for middle school (grades 6–8)

Closest matches whose grade range overlaps 6–8— same scoring, different audience.

Millionaires for the Month by Stacy McAnulty · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).
One for Sorrow by Mary Downing Hahn · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).
Out of My Mind by Sharon M. Draper · 700L — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–7).
Runaway Twin by Peg Kehret · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).
Six Feet Below Zero by Ena Jones · grades 4–6 — Both on the Mark Twain Readers Award list (+1 more shared list) and overlapping grades (4–6).

What to read after Percy Jackson and the Olympians

The Sea of Monsters is book 2 of 5 in Rick Riordan’s Percy Jackson and the Olympians series. Not done with the series yet? Follow the Percy Jackson and the Olympians reading order first — then come back for the matches above.

Common questions

What books are similar to The Sea of Monsters?: The 10 closest matches to The Sea of Monsters by Rick Riordan on ReadingList include The Lightning Thief (Percy Jackson and the Olympians, Book 1), The Maze of Bones, Because of Winn-Dixie, Deep and Dark and Dangerous, and Stolen Children. Each is scored on shared themes, shared award lists, genre, and reading level (grades 4–6), and links to the curricula, states, and grades where it is assigned in US schools, with primary sources.
Are books like The Sea of Monsters reading-level appropriate?: Yes — every match is a reading-level match, not just a topical one, scored on Lexile and grade band (grades 4–6), so the picks stay grade-appropriate. See how ReadingList judges text difficulty on the /standard methodology page.
How does ReadingList choose similar books?: Matches are ranked by shared themes, shared award and reading-program lists (two books picked for the same state award were chosen by the same committees for the same readers), same genre, comparable Lexile and grade band, and publication decade — computed from cited public curriculum data, not editorial opinion or AI-generated summaries.

Book data last updated 2026-09-05. Matches are computed from each book’s cited attributes — see the methodology.

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