diff --git a/homeassistant/components/knx/const.py b/homeassistant/components/knx/const.py
index e22546d3806..7a9dfc34546 100644
--- a/homeassistant/components/knx/const.py
+++ b/homeassistant/components/knx/const.py
@@ -52,8 +52,8 @@ CONF_KNX_DEFAULT_RATE_LIMIT: Final = 0
 DEFAULT_ROUTING_IA: Final = "0.0.240"
 
 CONF_KNX_TELEGRAM_LOG_SIZE: Final = "telegram_log_size"
-TELEGRAM_LOG_DEFAULT: Final = 200
-TELEGRAM_LOG_MAX: Final = 5000  # ~2 MB or ~5 hours of reasonable bus load
+TELEGRAM_LOG_DEFAULT: Final = 1000
+TELEGRAM_LOG_MAX: Final = 25000  # ~10 MB or ~25 hours of reasonable bus load
 
 ##
 # Secure constants
diff --git a/homeassistant/components/knx/telegrams.py b/homeassistant/components/knx/telegrams.py
index f4b31fd11f9..dcd5f477679 100644
--- a/homeassistant/components/knx/telegrams.py
+++ b/homeassistant/components/knx/telegrams.py
@@ -75,6 +75,7 @@ class Telegrams:
             )
         )
         self.recent_telegrams: deque[TelegramDict] = deque(maxlen=log_size)
+        self.last_ga_telegrams: dict[str, TelegramDict] = {}
 
     async def load_history(self) -> None:
         """Load history from store."""
@@ -88,6 +89,9 @@ class Telegrams:
             if isinstance(telegram["payload"], list):
                 telegram["payload"] = tuple(telegram["payload"])  # type: ignore[unreachable]
         self.recent_telegrams.extend(telegrams)
+        self.last_ga_telegrams = {
+            t["destination"]: t for t in telegrams if t["payload"] is not None
+        }
 
     async def save_history(self) -> None:
         """Save history to store."""
@@ -98,6 +102,9 @@ class Telegrams:
         """Handle incoming and outgoing telegrams from xknx."""
         telegram_dict = self.telegram_to_dict(telegram)
         self.recent_telegrams.append(telegram_dict)
+        if telegram_dict["payload"] is not None:
+            # exclude GroupValueRead telegrams
+            self.last_ga_telegrams[telegram_dict["destination"]] = telegram_dict
         async_dispatcher_send(self.hass, SIGNAL_KNX_TELEGRAM, telegram, telegram_dict)
 
     def telegram_to_dict(self, telegram: Telegram) -> TelegramDict:
diff --git a/homeassistant/components/knx/websocket.py b/homeassistant/components/knx/websocket.py
index 6cb2218b221..9ba3e0ccff6 100644
--- a/homeassistant/components/knx/websocket.py
+++ b/homeassistant/components/knx/websocket.py
@@ -47,6 +47,7 @@ async def register_panel(hass: HomeAssistant) -> None:
     websocket_api.async_register_command(hass, ws_project_file_process)
     websocket_api.async_register_command(hass, ws_project_file_remove)
     websocket_api.async_register_command(hass, ws_group_monitor_info)
+    websocket_api.async_register_command(hass, ws_group_telegrams)
     websocket_api.async_register_command(hass, ws_subscribe_telegram)
     websocket_api.async_register_command(hass, ws_get_knx_project)
     websocket_api.async_register_command(hass, ws_validate_entity)
@@ -287,6 +288,27 @@ def ws_group_monitor_info(
     )
 
 
+@websocket_api.require_admin
+@websocket_api.websocket_command(
+    {
+        vol.Required("type"): "knx/group_telegrams",
+    }
+)
+@provide_knx
+@callback
+def ws_group_telegrams(
+    hass: HomeAssistant,
+    knx: KNXModule,
+    connection: websocket_api.ActiveConnection,
+    msg: dict,
+) -> None:
+    """Handle get group telegrams command."""
+    connection.send_result(
+        msg["id"],
+        knx.telegrams.last_ga_telegrams,
+    )
+
+
 @websocket_api.require_admin
 @websocket_api.websocket_command(
     {
diff --git a/tests/components/knx/test_config_flow.py b/tests/components/knx/test_config_flow.py
index 78751c7e641..2187721a518 100644
--- a/tests/components/knx/test_config_flow.py
+++ b/tests/components/knx/test_config_flow.py
@@ -913,7 +913,7 @@ async def test_form_with_automatic_connection_handling(
         CONF_KNX_ROUTE_BACK: False,
         CONF_KNX_TUNNEL_ENDPOINT_IA: None,
         CONF_KNX_STATE_UPDATER: True,
-        CONF_KNX_TELEGRAM_LOG_SIZE: 200,
+        CONF_KNX_TELEGRAM_LOG_SIZE: 1000,
     }
     knx_setup.assert_called_once()
 
@@ -1210,7 +1210,7 @@ async def test_options_flow_connection_type(
             CONF_KNX_SECURE_DEVICE_AUTHENTICATION: None,
             CONF_KNX_SECURE_USER_ID: None,
             CONF_KNX_SECURE_USER_PASSWORD: None,
-            CONF_KNX_TELEGRAM_LOG_SIZE: 200,
+            CONF_KNX_TELEGRAM_LOG_SIZE: 1000,
         }
 
 
diff --git a/tests/components/knx/test_websocket.py b/tests/components/knx/test_websocket.py
index b3e4b7aaa38..a34f126e4f4 100644
--- a/tests/components/knx/test_websocket.py
+++ b/tests/components/knx/test_websocket.py
@@ -180,6 +180,37 @@ async def test_knx_group_monitor_info_command(
     assert res["result"]["recent_telegrams"] == []
 
 
+async def test_knx_group_telegrams_command(
+    hass: HomeAssistant, knx: KNXTestKit, hass_ws_client: WebSocketGenerator
+) -> None:
+    """Test knx/group_telegrams command."""
+    await knx.setup_integration({})
+    client = await hass_ws_client(hass)
+
+    await client.send_json_auto_id({"type": "knx/group_telegrams"})
+    res = await client.receive_json()
+    assert res["success"], res
+    assert res["result"] == {}
+
+    # # get some telegrams to populate the cache
+    await knx.receive_write("1/1/1", True)
+    await knx.receive_read("2/2/2")  # read telegram shall be ignored
+    await knx.receive_write("3/3/3", 0x34)
+
+    await client.send_json_auto_id({"type": "knx/group_telegrams"})
+    res = await client.receive_json()
+    assert res["success"], res
+    assert len(res["result"]) == 2
+    assert "1/1/1" in res["result"]
+    assert res["result"]["1/1/1"]["destination"] == "1/1/1"
+    assert "3/3/3" in res["result"]
+    assert res["result"]["3/3/3"]["payload"] == 52
+    assert res["result"]["3/3/3"]["telegramtype"] == "GroupValueWrite"
+    assert res["result"]["3/3/3"]["source"] == "1.2.3"
+    assert res["result"]["3/3/3"]["direction"] == "Incoming"
+    assert res["result"]["3/3/3"]["timestamp"] is not None
+
+
 async def test_knx_subscribe_telegrams_command_recent_telegrams(
     hass: HomeAssistant, knx: KNXTestKit, hass_ws_client: WebSocketGenerator
 ) -> None: