diff --git a/homeassistant/components/somfy/climate.py b/homeassistant/components/somfy/climate.py
index e0d45ee0f0d..1e1e3cdca95 100644
--- a/homeassistant/components/somfy/climate.py
+++ b/homeassistant/components/somfy/climate.py
@@ -126,7 +126,7 @@ class SomfyClimate(SomfyEntity, ClimateEntity):
         """Return hvac operation ie. heat, cool mode."""
         if self._climate.get_regulation_state() == RegulationState.TIMETABLE:
             return HVAC_MODE_AUTO
-        return HVAC_MODES_MAPPING.get(self._climate.get_hvac_state())
+        return HVAC_MODES_MAPPING[self._climate.get_hvac_state()]
 
     @property
     def hvac_modes(self) -> list[str]:
diff --git a/homeassistant/components/somfy/coordinator.py b/homeassistant/components/somfy/coordinator.py
index c9633c4fa4d..a22f8185702 100644
--- a/homeassistant/components/somfy/coordinator.py
+++ b/homeassistant/components/somfy/coordinator.py
@@ -33,7 +33,7 @@ class SomfyDataUpdateCoordinator(DataUpdateCoordinator):
         )
         self.data = {}
         self.client = client
-        self.site_device = {}
+        self.site_device: dict[str, list] = {}
         self.last_site_index = -1
 
     async def _async_update_data(self) -> dict[str, Device]:
diff --git a/homeassistant/components/somfy/cover.py b/homeassistant/components/somfy/cover.py
index e3bc6ef6d94..91bebc1da0d 100644
--- a/homeassistant/components/somfy/cover.py
+++ b/homeassistant/components/somfy/cover.py
@@ -1,4 +1,8 @@
 """Support for Somfy Covers."""
+from __future__ import annotations
+
+from typing import cast
+
 from pymfy.api.devices.blind import Blind
 from pymfy.api.devices.category import Category
 
@@ -23,6 +27,7 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.restore_state import RestoreEntity
 
 from .const import COORDINATOR, DOMAIN
+from .coordinator import SomfyDataUpdateCoordinator
 from .entity import SomfyEntity
 
 BLIND_DEVICE_CATEGORIES = {Category.INTERIOR_BLIND.value, Category.EXTERIOR_BLIND.value}
@@ -68,7 +73,9 @@ class SomfyCover(SomfyEntity, RestoreEntity, CoverEntity):
 
     def _create_device(self) -> Blind:
         """Update the device with the latest data."""
-        self._cover = Blind(self.device, self.coordinator.client)
+        self._cover = Blind(
+            self.device, cast(SomfyDataUpdateCoordinator, self.coordinator).client
+        )
 
     @property
     def supported_features(self) -> int:
@@ -155,7 +162,7 @@ class SomfyCover(SomfyEntity, RestoreEntity, CoverEntity):
         return self._is_closing
 
     @property
-    def is_closed(self) -> bool:
+    def is_closed(self) -> bool | None:
         """Return if the cover is closed."""
         is_closed = None
         if self.has_state("position"):
@@ -165,7 +172,7 @@ class SomfyCover(SomfyEntity, RestoreEntity, CoverEntity):
         return is_closed
 
     @property
-    def current_cover_tilt_position(self) -> int:
+    def current_cover_tilt_position(self) -> int | None:
         """Return current position of cover tilt.
 
         None is unknown, 0 is closed, 100 is fully open.
diff --git a/mypy.ini b/mypy.ini
index 983b10c9eb6..0cdcc020e42 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -2206,9 +2206,6 @@ ignore_errors = true
 [mypy-homeassistant.components.solaredge.*]
 ignore_errors = true
 
-[mypy-homeassistant.components.somfy.*]
-ignore_errors = true
-
 [mypy-homeassistant.components.sonos.*]
 ignore_errors = true
 
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index 1570579a605..a31c95f0cd2 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -77,7 +77,6 @@ IGNORED_MODULES: Final[list[str]] = [
     "homeassistant.components.sma.*",
     "homeassistant.components.smartthings.*",
     "homeassistant.components.solaredge.*",
-    "homeassistant.components.somfy.*",
     "homeassistant.components.sonos.*",
     "homeassistant.components.spotify.*",
     "homeassistant.components.stt.*",