diff --git a/homeassistant/components/aemet/entity.py b/homeassistant/components/aemet/entity.py
index ba3f7e56193..f48eaa1593d 100644
--- a/homeassistant/components/aemet/entity.py
+++ b/homeassistant/components/aemet/entity.py
@@ -7,14 +7,32 @@ from typing import Any
 from aemet_opendata.helpers import dict_nested_value
 
 from homeassistant.components.weather import Forecast
+from homeassistant.helpers.device_registry import DeviceEntryType, DeviceInfo
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
+from .const import DOMAIN
 from .coordinator import WeatherUpdateCoordinator
 
 
 class AemetEntity(CoordinatorEntity[WeatherUpdateCoordinator]):
     """Define an AEMET entity."""
 
+    def __init__(
+        self,
+        coordinator: WeatherUpdateCoordinator,
+        name: str,
+        unique_id: str,
+    ) -> None:
+        """Initialize the entity."""
+        super().__init__(coordinator)
+        self._attr_device_info = DeviceInfo(
+            name=name,
+            entry_type=DeviceEntryType.SERVICE,
+            identifiers={(DOMAIN, unique_id)},
+            manufacturer="AEMET",
+            model="Forecast",
+        )
+
     def get_aemet_forecast(self, forecast_mode: str) -> list[Forecast]:
         """Return AEMET entity forecast by mode."""
         return self.coordinator.data["forecast"][forecast_mode]
diff --git a/homeassistant/components/aemet/sensor.py b/homeassistant/components/aemet/sensor.py
index 268112070e8..cafb9be8a70 100644
--- a/homeassistant/components/aemet/sensor.py
+++ b/homeassistant/components/aemet/sensor.py
@@ -392,10 +392,12 @@ class AemetSensor(AemetEntity, SensorEntity):
         config_entry: ConfigEntry,
     ) -> None:
         """Initialize the sensor."""
-        super().__init__(coordinator)
+        assert config_entry.unique_id is not None
+        unique_id = config_entry.unique_id
+        super().__init__(coordinator, name, unique_id)
         self.entity_description = description
         self._attr_name = f"{name} {description.name}"
-        self._attr_unique_id = f"{config_entry.unique_id}-{description.key}"
+        self._attr_unique_id = f"{unique_id}-{description.key}"
 
     @property
     def native_value(self):
diff --git a/homeassistant/components/aemet/weather.py b/homeassistant/components/aemet/weather.py
index 4df0b1081f5..9c905941f62 100644
--- a/homeassistant/components/aemet/weather.py
+++ b/homeassistant/components/aemet/weather.py
@@ -71,7 +71,7 @@ class AemetWeather(
         coordinator: WeatherUpdateCoordinator,
     ) -> None:
         """Initialize the sensor."""
-        super().__init__(coordinator)
+        super().__init__(coordinator, name, unique_id)
         self._attr_name = name
         self._attr_unique_id = unique_id
 
diff --git a/tests/components/aemet/snapshots/test_diagnostics.ambr b/tests/components/aemet/snapshots/test_diagnostics.ambr
index 4b678dc1da5..8d4132cad84 100644
--- a/tests/components/aemet/snapshots/test_diagnostics.ambr
+++ b/tests/components/aemet/snapshots/test_diagnostics.ambr
@@ -20,7 +20,7 @@
       'pref_disable_polling': False,
       'source': 'user',
       'title': 'Mock Title',
-      'unique_id': None,
+      'unique_id': '**REDACTED**',
       'version': 1,
     }),
     'coord_data': dict({
diff --git a/tests/components/aemet/util.py b/tests/components/aemet/util.py
index bb8885f7b4c..162ee657513 100644
--- a/tests/components/aemet/util.py
+++ b/tests/components/aemet/util.py
@@ -68,6 +68,7 @@ async def async_init_integration(hass: HomeAssistant):
             CONF_NAME: "AEMET",
         },
         entry_id="7442b231f139e813fc1939281123f220",
+        unique_id="40.30403754--3.72935236",
     )
     config_entry.add_to_hass(hass)