![Astro 5 Hydration Mismatch: Causes and Fixes [2026]](https://cdn.asepalazhari.com/images/articles/development/fixing-astro-hydration-mismatch-errors.jpeg)
Astro 5 Hydration Mismatch: Causes and Fixes [2026]
Seeing hydration mismatch warnings in your Astro 5 islands? Here is why SSR and client markup drift apart, and the fixes that actually work in production.
![Astro 5 Hydration Mismatch: Causes and Fixes [2026]](https://cdn.asepalazhari.com/images/articles/development/fixing-astro-hydration-mismatch-errors.jpeg)
Seeing hydration mismatch warnings in your Astro 5 islands? Here is why SSR and client markup drift apart, and the fixes that actually work in production.

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