diff --git a/esphome/components/logger/logger.cpp b/esphome/components/logger/logger.cpp
index 2e8ed2b37b..5ef0a68a38 100644
--- a/esphome/components/logger/logger.cpp
+++ b/esphome/components/logger/logger.cpp
@@ -65,6 +65,8 @@ void HOT Logger::log_vprintf_(uint8_t level, const char *tag, int line, const ch
     uint16_t buffer_at = 0;                         // Initialize buffer position
     this->format_log_to_buffer_with_terminator_(level, tag, line, format, args, console_buffer, &buffer_at,
                                                 MAX_CONSOLE_LOG_MSG_SIZE);
+    // Add newline if platform needs it (ESP32 doesn't add via write_msg_)
+    this->add_newline_to_buffer_if_needed_(console_buffer, &buffer_at, MAX_CONSOLE_LOG_MSG_SIZE);
     this->write_msg_(console_buffer, buffer_at);
   }
 
@@ -212,10 +214,7 @@ void Logger::process_messages_() {
       // This ensures all log messages appear on the console in a clean, serialized manner
       // Note: Messages may appear slightly out of order due to async processing, but
       // this is preferred over corrupted/interleaved console output
-      if (this->baud_rate_ > 0) {
-        this->add_newline_to_buffer_if_needed_();
-        this->write_msg_(this->tx_buffer_, this->tx_buffer_at_);
-      }
+      this->write_tx_buffer_to_console_();
     }
   } else {
     // No messages to process, disable loop if appropriate
diff --git a/esphome/components/logger/logger.h b/esphome/components/logger/logger.h
index ea68594e23..a6a6900f70 100644
--- a/esphome/components/logger/logger.h
+++ b/esphome/components/logger/logger.h
@@ -212,23 +212,32 @@ class Logger : public Component {
   }
 
   // Helper to add newline to buffer for platforms that need it
-  inline void HOT add_newline_to_buffer_if_needed_() {
+  // Modifies buffer_at to include the newline
+  inline void HOT add_newline_to_buffer_if_needed_(char *buffer, uint16_t *buffer_at, uint16_t buffer_size) {
     if constexpr (!WRITE_MSG_ADDS_NEWLINE) {
       // Add newline - don't need to maintain null termination
       // write_msg_ now always receives explicit length, so we can safely overwrite the null terminator
       // This is safe because:
       // 1. Callbacks already received the message (before we add newline)
       // 2. write_msg_ receives the length explicitly (doesn't need null terminator)
-      if (this->tx_buffer_at_ < this->tx_buffer_size_) {
-        this->tx_buffer_[this->tx_buffer_at_++] = '\n';
-      } else if (this->tx_buffer_size_ > 0) {
+      if (*buffer_at < buffer_size) {
+        buffer[(*buffer_at)++] = '\n';
+      } else if (buffer_size > 0) {
         // Buffer was full - replace last char with newline to ensure it's visible
-        this->tx_buffer_[this->tx_buffer_size_ - 1] = '\n';
-        this->tx_buffer_at_ = this->tx_buffer_size_;
+        buffer[buffer_size - 1] = '\n';
+        *buffer_at = buffer_size;
       }
     }
   }
 
+  // Helper to write tx_buffer_ to console if logging is enabled
+  inline void HOT write_tx_buffer_to_console_() {
+    if (this->baud_rate_ > 0) {
+      this->add_newline_to_buffer_if_needed_(this->tx_buffer_, &this->tx_buffer_at_, this->tx_buffer_size_);
+      this->write_msg_(this->tx_buffer_, this->tx_buffer_at_);
+    }
+  }
+
   // Helper to format and send a log message to both console and callbacks
   inline void HOT log_message_to_buffer_and_send_(uint8_t level, const char *tag, int line, const char *format,
                                                   va_list args) {
@@ -241,10 +250,7 @@ class Logger : public Component {
     this->log_callback_.call(level, tag, this->tx_buffer_, this->tx_buffer_at_);
 
     // Console gets message WITH newline (if platform needs it)
-    if (this->baud_rate_ > 0) {
-      this->add_newline_to_buffer_if_needed_();
-      this->write_msg_(this->tx_buffer_, this->tx_buffer_at_);
-    }
+    this->write_tx_buffer_to_console_();
   }
 
   // Write the body of the log message to the buffer