diff --git a/esphome/components/mipi/__init__.py b/esphome/components/mipi/__init__.py
index f610f160b0..570a021cff 100644
--- a/esphome/components/mipi/__init__.py
+++ b/esphome/components/mipi/__init__.py
@@ -309,8 +309,12 @@ class DriverChip:
                 CONF_NATIVE_HEIGHT, height + offset_height * 2
             )
             offset_height = native_height - height - offset_height
-        # Swap default dimensions if swap_xy is set
-        if transform[CONF_SWAP_XY] is True:
+        # Swap default dimensions if swap_xy is set, or if rotation is 90/270 and we are not using a buffer
+        rotated = not requires_buffer(config) and config.get(CONF_ROTATION, 0) in (
+            90,
+            270,
+        )
+        if transform[CONF_SWAP_XY] is True or rotated:
             width, height = height, width
             offset_height, offset_width = offset_width, offset_height
         return width, height, offset_width, offset_height