diff --git a/addons/web/controllers/home.py b/addons/web/controllers/home.py
index f82bc1e0678..92108fd351e 100644
--- a/addons/web/controllers/home.py
+++ b/addons/web/controllers/home.py
@@ -62,12 +62,16 @@ class Home(http.Controller):
             return request.redirect('/web/login?error=access')
 
     @http.route('/web/webclient/load_menus/<string:unique>', type='http', auth='user', methods=['GET'])
-    def web_load_menus(self, unique):
+    def web_load_menus(self, unique, lang=None):
         """
         Loads the menus for the webclient
         :param unique: this parameters is not used, but mandatory: it is used by the HTTP stack to make a unique request
+        :param lang: language in which the menus should be loaded (only works if language is installed)
         :return: the menus (including the images in Base64)
         """
+        if lang:
+            request.update_context(lang=lang)
+
         menus = request.env["ir.ui.menu"].load_web_menus(request.session.debug)
         body = json.dumps(menus, default=ustr)
         response = request.make_response(body, [
diff --git a/addons/web/views/webclient_templates.xml b/addons/web/views/webclient_templates.xml
index 25b273d8e09..b924c1560fb 100644
--- a/addons/web/views/webclient_templates.xml
+++ b/addons/web/views/webclient_templates.xml
@@ -253,12 +253,18 @@
                 <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/>
                 <meta name="theme-color" content="#71639e"/>
                 <script type="text/javascript">
-                    odoo.__session_info__ = <t t-out="json.dumps(session_info)"/>;
-                    odoo.reloadMenus = () => fetch(`/web/webclient/load_menus/${odoo.__session_info__.cache_hashes.load_menus}`).then(res => res.json());
-                    odoo.loadMenusPromise = odoo.reloadMenus();
                     // Block to avoid leaking variables in the script scope
                     {
+                        odoo.__session_info__ = <t t-out="json.dumps(session_info)"/>;
                         const { user_context,  cache_hashes } = odoo.__session_info__;
+                        const lang = new URLSearchParams(document.location.search).get("lang");
+                        let menuURL = `/web/webclient/load_menus/${cache_hashes.load_menus}`;
+                        if (lang) {
+                            user_context.lang = lang;
+                            menuURL += `?lang=${lang}`
+                        }
+                        odoo.reloadMenus = () => fetch(menuURL).then(res => res.json());
+                        odoo.loadMenusPromise = odoo.reloadMenus();
                         // Prefetch translations to speedup webclient. This is done in JS because link rel="prefetch"
                         // is not yet supported on safari.
                         fetch(`/web/webclient/translations/${cache_hashes.translations}?lang=${user_context.lang}`);