I would say traveling in June 2023 first week can vary depending on the specific location in Wayanad. In Kerala, June marks the beginning of the monsoon season, and rainfall can be significant. It is advisable to check the daily local weather forecast and plan accordingly. While heavy rain is possible, it doesn't mean it will rain continuously. It is better that you pack appropriate rain gear and be prepared for occasional showers. Keep in mind that some tourist activities like boating etc. and outdoor attractions including zipline may be affected or have limited accessibility during this time.