diff --git a/esphome/components/time/automation.cpp b/esphome/components/time/automation.cpp
index 6d34459fea..84cc76a762 100644
--- a/esphome/components/time/automation.cpp
+++ b/esphome/components/time/automation.cpp
@@ -22,7 +22,10 @@ void CronTrigger::loop() {
     return;
 
   if (this->last_check_.has_value()) {
-    if (*this->last_check_ >= time) {
+    if (*this->last_check_ > time && this->last_check_->timestamp - time.timestamp > 900) {
+      // We went back in time (a lot), probably caused by time synchronization
+      ESP_LOGW(TAG, "Time has jumped back!");
+    } else if (*this->last_check_ >= time) {
       // already handled this one
       return;
     }