| Cover | Jan. 18, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 18, 2023 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-41591 |
| Entity Registrant Name | Skyward Specialty Insurance Group, Inc. |
| Entity Central Index Key | 0001519449 |
| Entity Tax Identification Number | 14-1957288 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 800 Gessner Road |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77024-4284 |
| City Area Code | 713 |
| Local Phone Number | 935-4800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | SKWD |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
