diff --git a/esphome/components/esp32_rmt_led_strip/led_strip.cpp b/esphome/components/esp32_rmt_led_strip/led_strip.cpp
index 8ee890ec10..4e8c862c23 100644
--- a/esphome/components/esp32_rmt_led_strip/led_strip.cpp
+++ b/esphome/components/esp32_rmt_led_strip/led_strip.cpp
@@ -33,6 +33,7 @@ void ESP32RMTLEDStripLightOutput::setup() {
     this->mark_failed();
     return;
   }
+  memset(this->buf_, 0, buffer_size);
 
   this->effect_data_ = allocator.allocate(this->num_leds_);
   if (this->effect_data_ == nullptr) {