diff --git a/src/app/page.tsx b/src/app/page.tsx
index 48af2ec52..bda704c49 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -102,6 +102,19 @@ export default async function DashboardPage() {
       const queryClient = new QueryClient();
       queryClient.setQueryData(queryKeys.dashboardSnapshot(locale), wireBody);
       queryClient.setQueryData(queryKeys.dashboardWidgets(), wireBody.layout);
+      // The mood chart's series rides the mood tile (same engine as
+      // `/api/mood/analytics`); seeded with readings only, where the tile's
+      // summary is the route's.
+      const mood = (
+        wireBody.tiles as
+          { mood?: { entries: unknown[]; summary: unknown } } | undefined
+      )?.mood;
+      if (mood?.summary && mood.entries.length > 0) {
+        queryClient.setQueryData(queryKeys.moodAnalytics(), {
+          entries: mood.entries,
+          summary: mood.summary,
+        });
+      }
 
       // Above-the-fold prefetch runs ONLY in snapshot mode: legacy mode derives
       // its chart-type list from analytics queries the RSC did not run, so there
diff --git a/src/lib/queries/__tests__/use-dashboard-snapshot.test.tsx b/src/lib/queries/__tests__/use-dashboard-snapshot.test.tsx
index c19d91a69..892a178f3 100644
--- a/src/lib/queries/__tests__/use-dashboard-snapshot.test.tsx
+++ b/src/lib/queries/__tests__/use-dashboard-snapshot.test.tsx
@@ -143,6 +143,46 @@ describe("useDashboardSnapshot — auto-refresh on an open page", () => {
     await (opts.queryFn as () => Promise<unknown>)();
     expect(setQueryDataMock).not.toHaveBeenCalled();
   });
+
+  it("seeds the mood chart's series from the mood tile, so the chart asks for nothing", async () => {
+    const entries = [{ date: "2026-11-10", score: 4, samples: 1 }];
+    const summary = { count: 1, latest: 4 };
+    vi.stubGlobal(
+      "fetch",
+      vi.fn().mockResolvedValue(
+        envelopeResponse({
+          layout: { widgets: [] },
+          tiles: { mood: { entries, summary } },
+        }),
+      ),
+    );
+    getQueryDataMock.mockReturnValue(undefined);
+    useDashboardSnapshot();
+    await (lastOpts().queryFn as () => Promise<unknown>)();
+    expect(setQueryDataMock).toHaveBeenCalledWith(queryKeys.moodAnalytics(), {
+      entries,
+      summary,
+    });
+  });
+
+  it("leaves the mood chart to its own read when the tile has no readings", async () => {
+    vi.stubGlobal(
+      "fetch",
+      vi.fn().mockResolvedValue(
+        envelopeResponse({
+          layout: { widgets: [] },
+          tiles: { mood: { entries: [], summary: null } },
+        }),
+      ),
+    );
+    getQueryDataMock.mockReturnValue(undefined);
+    useDashboardSnapshot();
+    await (lastOpts().queryFn as () => Promise<unknown>)();
+    expect(setQueryDataMock).not.toHaveBeenCalledWith(
+      queryKeys.moodAnalytics(),
+      expect.anything(),
+    );
+  });
 });
 
 describe("prefetchDashboardSnapshot — hydration-safe promise handoff", () => {
diff --git a/src/lib/queries/use-dashboard-snapshot.ts b/src/lib/queries/use-dashboard-snapshot.ts
index 280564b75..f5b85aff3 100644
--- a/src/lib/queries/use-dashboard-snapshot.ts
+++ b/src/lib/queries/use-dashboard-snapshot.ts
@@ -194,6 +194,21 @@ function makeSnapshotQueryFn(queryClient: QueryClient) {
     if (!queryClient.getQueryData(queryKeys.dashboardWidgets())) {
       queryClient.setQueryData(queryKeys.dashboardWidgets(), snap.layout);
     }
+    // The mood tile carries the series `/api/mood/analytics` answers (one
+    // engine, `buildMoodDailySeries`), which is what the mood chart reads.
+    // Same seed-when-empty rule, and only with readings, the one case where
+    // the tile's summary is the route's.
+    const mood = snap.tiles?.mood;
+    if (
+      mood?.summary &&
+      mood.entries.length > 0 &&
+      !queryClient.getQueryData(queryKeys.moodAnalytics())
+    ) {
+      queryClient.setQueryData(queryKeys.moodAnalytics(), {
+        entries: mood.entries,
+        summary: mood.summary,
+      });
+    }
     return snap;
   };
 }