diff --git a/homeassistant/components/shelly/__init__.py b/homeassistant/components/shelly/__init__.py
index 29eb07b3a90..2da2c5a6ea5 100644
--- a/homeassistant/components/shelly/__init__.py
+++ b/homeassistant/components/shelly/__init__.py
@@ -5,6 +5,7 @@ import logging
 
 import aioshelly
 import async_timeout
+import voluptuous as vol
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
@@ -17,6 +18,7 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import aiohttp_client, device_registry, update_coordinator
+import homeassistant.helpers.config_validation as cv
 
 from .const import (
     AIOSHELLY_DEVICE_TIMEOUT_SEC,
@@ -25,7 +27,9 @@ from .const import (
     ATTR_DEVICE,
     BATTERY_DEVICES_WITH_PERMANENT_CONNECTION,
     COAP,
+    CONF_COAP_PORT,
     DATA_CONFIG_ENTRY,
+    DEFAULT_COAP_PORT,
     DEVICE,
     DOMAIN,
     EVENT_SHELLY_CLICK,
@@ -43,10 +47,22 @@ PLATFORMS = ["binary_sensor", "cover", "light", "sensor", "switch"]
 SLEEPING_PLATFORMS = ["binary_sensor", "sensor"]
 _LOGGER = logging.getLogger(__name__)
 
+COAP_SCHEMA = vol.Schema(
+    {
+        vol.Optional(CONF_COAP_PORT, default=DEFAULT_COAP_PORT): cv.port,
+    }
+)
+CONFIG_SCHEMA = vol.Schema({DOMAIN: COAP_SCHEMA}, extra=vol.ALLOW_EXTRA)
+
 
 async def async_setup(hass: HomeAssistant, config: dict):
     """Set up the Shelly component."""
     hass.data[DOMAIN] = {DATA_CONFIG_ENTRY: {}}
+
+    conf = config.get(DOMAIN)
+    if conf is not None:
+        hass.data[DOMAIN][CONF_COAP_PORT] = conf[CONF_COAP_PORT]
+
     return True
 
 
diff --git a/homeassistant/components/shelly/const.py b/homeassistant/components/shelly/const.py
index 2609b7cd57f..bff82057120 100644
--- a/homeassistant/components/shelly/const.py
+++ b/homeassistant/components/shelly/const.py
@@ -6,6 +6,9 @@ DEVICE = "device"
 DOMAIN = "shelly"
 REST = "rest"
 
+CONF_COAP_PORT = "coap_port"
+DEFAULT_COAP_PORT = 5683
+
 # Used in "_async_update_data" as timeout for polling data from devices.
 POLLING_TIMEOUT_SEC = 18
 
diff --git a/homeassistant/components/shelly/utils.py b/homeassistant/components/shelly/utils.py
index 39134957fb9..7fabdb9bf8b 100644
--- a/homeassistant/components/shelly/utils.py
+++ b/homeassistant/components/shelly/utils.py
@@ -14,7 +14,9 @@ from homeassistant.util.dt import parse_datetime, utcnow
 from .const import (
     BASIC_INPUTS_EVENTS_TYPES,
     COAP,
+    CONF_COAP_PORT,
     DATA_CONFIG_ENTRY,
+    DEFAULT_COAP_PORT,
     DOMAIN,
     SHBTN_INPUTS_EVENTS_TYPES,
     SHBTN_MODELS,
@@ -190,7 +192,13 @@ def get_device_wrapper(hass: HomeAssistant, device_id: str):
 async def get_coap_context(hass):
     """Get CoAP context to be used in all Shelly devices."""
     context = aioshelly.COAP()
-    await context.initialize()
+    port = DEFAULT_COAP_PORT
+    if DOMAIN in hass.data:
+        port = hass.data[DOMAIN].get(CONF_COAP_PORT, DEFAULT_COAP_PORT)
+    else:
+        port = DEFAULT_COAP_PORT
+    _LOGGER.info("Starting CoAP context with UDP port %s", port)
+    await context.initialize(port)
 
     @callback
     def shutdown_listener(ev):