diff --git a/esphome/components/sensor/__init__.py b/esphome/components/sensor/__init__.py
index 12daf34d6e..3ed27390bd 100644
--- a/esphome/components/sensor/__init__.py
+++ b/esphome/components/sensor/__init__.py
@@ -55,6 +55,7 @@ from esphome.const import (
     DEVICE_CLASS_PM25,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_POWER_FACTOR,
+    DEVICE_CLASS_PRECIPITATION_INTENSITY,
     DEVICE_CLASS_PRESSURE,
     DEVICE_CLASS_REACTIVE_POWER,
     DEVICE_CLASS_SIGNAL_STRENGTH,
@@ -65,6 +66,7 @@ from esphome.const import (
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS,
     DEVICE_CLASS_VOLTAGE,
     DEVICE_CLASS_VOLUME,
+    DEVICE_CLASS_WATER,
     DEVICE_CLASS_WEIGHT,
 )
 from esphome.core import CORE, coroutine_with_priority
@@ -100,6 +102,7 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_PM25,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_POWER_FACTOR,
+    DEVICE_CLASS_PRECIPITATION_INTENSITY,
     DEVICE_CLASS_PRESSURE,
     DEVICE_CLASS_REACTIVE_POWER,
     DEVICE_CLASS_SIGNAL_STRENGTH,
@@ -110,6 +113,7 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS,
     DEVICE_CLASS_VOLTAGE,
     DEVICE_CLASS_VOLUME,
+    DEVICE_CLASS_WATER,
     DEVICE_CLASS_WEIGHT,
 ]
 
diff --git a/esphome/const.py b/esphome/const.py
index d2bac8f9df..96dfc47dbc 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -947,6 +947,7 @@ DEVICE_CLASS_PM1 = "pm1"
 DEVICE_CLASS_PM10 = "pm10"
 DEVICE_CLASS_PM25 = "pm25"
 DEVICE_CLASS_POWER_FACTOR = "power_factor"
+DEVICE_CLASS_PRECIPITATION_INTENSITY = "precipitation_intensity"
 DEVICE_CLASS_PRESSURE = "pressure"
 DEVICE_CLASS_REACTIVE_POWER = "reactive_power"
 DEVICE_CLASS_SIGNAL_STRENGTH = "signal_strength"
@@ -957,6 +958,7 @@ DEVICE_CLASS_TIMESTAMP = "timestamp"
 DEVICE_CLASS_VOLATILE_ORGANIC_COMPOUNDS = "volatile_organic_compounds"
 DEVICE_CLASS_VOLTAGE = "voltage"
 DEVICE_CLASS_VOLUME = "volume"
+DEVICE_CLASS_WATER = "water"
 DEVICE_CLASS_WEIGHT = "weight"
 # device classes of both binary_sensor and button component
 DEVICE_CLASS_UPDATE = "update"