| Cover Page Document | Mar. 23, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 23, 2023 |
| Entity Registrant Name | WEREWOLF THERAPEUTICS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40366 |
| Entity Tax Identification Number | 82-3523180 |
| Entity Address, Address Line One | 200 Talcott Ave |
| Entity Address, Address Line Two | 2nd Floor |
| Entity Address, City or Town | Watertown |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02472 |
| City Area Code | (617 |
| Local Phone Number | 952-0555 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | HOWL |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
| Entity Central Index Key | 0001785530 |
| Amendment Flag | false |
