diff --git a/homeassistant/components/matter/sensor.py b/homeassistant/components/matter/sensor.py
index f5f1fe0e73e..b8249e9efa3 100644
--- a/homeassistant/components/matter/sensor.py
+++ b/homeassistant/components/matter/sensor.py
@@ -152,6 +152,8 @@ PUMP_CONTROL_MODE_MAP = {
     clusters.PumpConfigurationAndControl.Enums.ControlModeEnum.kUnknownEnumValue: None,
 }
 
+TEMPERATURE_SCALING_FACTOR = 100
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
@@ -1141,6 +1143,23 @@ DISCOVERY_SCHEMAS = [
         device_type=(device_types.Thermostat,),
         allow_multi=True,  # also used for climate entity
     ),
+    MatterDiscoverySchema(
+        platform=Platform.SENSOR,
+        entity_description=MatterSensorEntityDescription(
+            key="ThermostatOutdoorTemperature",
+            translation_key="outdoor_temperature",
+            native_unit_of_measurement=UnitOfTemperature.CELSIUS,
+            suggested_display_precision=1,
+            device_class=SensorDeviceClass.TEMPERATURE,
+            device_to_ha=lambda x: (
+                None if x is None else x / TEMPERATURE_SCALING_FACTOR
+            ),
+            state_class=SensorStateClass.MEASUREMENT,
+        ),
+        entity_class=MatterSensor,
+        required_attributes=(clusters.Thermostat.Attributes.OutdoorTemperature,),
+        device_type=(device_types.Thermostat, device_types.RoomAirConditioner),
+    ),
     MatterDiscoverySchema(
         platform=Platform.SENSOR,
         entity_description=MatterOperationalStateSensorEntityDescription(
diff --git a/homeassistant/components/matter/strings.json b/homeassistant/components/matter/strings.json
index 7dae7638d8d..85ad6527653 100644
--- a/homeassistant/components/matter/strings.json
+++ b/homeassistant/components/matter/strings.json
@@ -485,6 +485,9 @@
       "apparent_current": {
         "name": "Apparent current"
       },
+      "outdoor_temperature": {
+        "name": "Outdoor temperature"
+      },
       "reactive_current": {
         "name": "Reactive current"
       },
diff --git a/tests/components/matter/fixtures/nodes/thermostat.json b/tests/components/matter/fixtures/nodes/thermostat.json
index a7abff41331..bb42b8926b9 100644
--- a/tests/components/matter/fixtures/nodes/thermostat.json
+++ b/tests/components/matter/fixtures/nodes/thermostat.json
@@ -317,6 +317,7 @@
     "1/64/65529": [],
     "1/64/65531": [0, 65528, 65529, 65531, 65532, 65533],
     "1/513/0": 2830,
+    "1/513/1": 1250,
     "1/513/3": null,
     "1/513/4": null,
     "1/513/5": null,
diff --git a/tests/components/matter/snapshots/test_sensor.ambr b/tests/components/matter/snapshots/test_sensor.ambr
index 2567ce2e936..911ea004995 100644
--- a/tests/components/matter/snapshots/test_sensor.ambr
+++ b/tests/components/matter/snapshots/test_sensor.ambr
@@ -6847,6 +6847,62 @@
     'state': '21.0',
   })
 # ---
+# name: test_sensors[thermostat][sensor.longan_link_hvac_outdoor_temperature-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.longan_link_hvac_outdoor_temperature',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 1,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.TEMPERATURE: 'temperature'>,
+    'original_icon': None,
+    'original_name': 'Outdoor temperature',
+    'platform': 'matter',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'outdoor_temperature',
+    'unique_id': '00000000000004D2-0000000000000004-MatterNodeDevice-1-ThermostatOutdoorTemperature-513-1',
+    'unit_of_measurement': <UnitOfTemperature.CELSIUS: '°C'>,
+  })
+# ---
+# name: test_sensors[thermostat][sensor.longan_link_hvac_outdoor_temperature-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'temperature',
+      'friendly_name': 'Longan link HVAC Outdoor temperature',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfTemperature.CELSIUS: '°C'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.longan_link_hvac_outdoor_temperature',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '12.5',
+  })
+# ---
 # name: test_sensors[thermostat][sensor.longan_link_hvac_temperature-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
diff --git a/tests/components/matter/test_sensor.py b/tests/components/matter/test_sensor.py
index 2254c021c6a..2414bafc80d 100644
--- a/tests/components/matter/test_sensor.py
+++ b/tests/components/matter/test_sensor.py
@@ -233,6 +233,26 @@ async def test_eve_thermo_sensor(
     assert state.state == "18.0"
 
 
+@pytest.mark.parametrize("node_fixture", ["thermostat"])
+async def test_thermostat_outdoor(
+    hass: HomeAssistant,
+    matter_client: MagicMock,
+    matter_node: MatterNode,
+) -> None:
+    """Test OutdoorTemperature."""
+    # OutdoorTemperature
+    state = hass.states.get("sensor.longan_link_hvac_outdoor_temperature")
+    assert state
+    assert state.state == "12.5"
+
+    set_node_attribute(matter_node, 1, 513, 1, -550)
+    await trigger_subscription_callback(hass, matter_client)
+
+    state = hass.states.get("sensor.longan_link_hvac_outdoor_temperature")
+    assert state
+    assert state.state == "-5.5"
+
+
 @pytest.mark.parametrize("node_fixture", ["pressure_sensor"])
 async def test_pressure_sensor(
     hass: HomeAssistant,