diff --git a/src/data/energy.ts b/src/data/energy.ts
index 5e082ac675..8cee433211 100644
--- a/src/data/energy.ts
+++ b/src/data/energy.ts
@@ -401,7 +401,13 @@ const getEnergyData = async (
 
   const dayDifference = differenceInDays(end || new Date(), start);
   const period =
-    dayDifference > 35 ? "month" : dayDifference > 2 ? "day" : "hour";
+    isFirstDayOfMonth(start) &&
+    (!end || isLastDayOfMonth(end)) &&
+    dayDifference > 35
+      ? "month"
+      : dayDifference > 2
+        ? "day"
+        : "hour";
 
   const lengthUnit = hass.config.unit_system.length || "";
   const energyUnits: StatisticsUnitConfiguration = {