diff --git a/src/panels/config/automation/trigger/types/ha-automation-trigger-time_pattern.ts b/src/panels/config/automation/trigger/types/ha-automation-trigger-time_pattern.ts
index 6f012c62f9..7d997268d8 100644
--- a/src/panels/config/automation/trigger/types/ha-automation-trigger-time_pattern.ts
+++ b/src/panels/config/automation/trigger/types/ha-automation-trigger-time_pattern.ts
@@ -33,6 +33,7 @@ export class HaTimePatternTrigger extends LitElement implements TriggerElement {
         .data=${this.trigger}
         .disabled=${this.disabled}
         .computeLabel=${this._computeLabelCallback}
+        .computeHelper=${this._computeHelperCallback}
         @value-changed=${this._valueChanged}
       ></ha-form>
     `;
@@ -50,6 +51,13 @@ export class HaTimePatternTrigger extends LitElement implements TriggerElement {
     this.hass.localize(
       `ui.panel.config.automation.editor.triggers.type.time_pattern.${schema.name}`
     );
+
+  private _computeHelperCallback = (
+    _schema: SchemaUnion<typeof SCHEMA>
+  ): string =>
+    this.hass.localize(
+      `ui.panel.config.automation.editor.triggers.type.time_pattern.help`
+    );
 }
 
 declare global {
diff --git a/src/translations/en.json b/src/translations/en.json
index 608b8ca821..2c9e4fbd3d 100644
--- a/src/translations/en.json
+++ b/src/translations/en.json
@@ -3718,6 +3718,7 @@
                 },
                 "time_pattern": {
                   "label": "Time pattern",
+                  "help": "Prefix the value with \"/\" to match whenever the value is divisible by that number. Use \"*\" to match any value.",
                   "hours": "Hours",
                   "minutes": "Minutes",
                   "seconds": "Seconds",