diff --git a/components/meteomatics_weather_api/actions/get-weather-data/get-weather-data.mjs b/components/meteomatics_weather_api/actions/get-weather-data/get-weather-data.mjs
index 30f657a0fde78..d7fd657ce8d56 100644
--- a/components/meteomatics_weather_api/actions/get-weather-data/get-weather-data.mjs
+++ b/components/meteomatics_weather_api/actions/get-weather-data/get-weather-data.mjs
@@ -36,7 +36,7 @@ export default {
   async run({ $ }) {
     const response = await this.app.getWeatherData({
       $,
-      validdatetime: this.validDateTime.join("--"),
+      validdatetime: this.validDateTime.join(","),
       parameters: this.parameters.join(","),
       locations: this.locations,
       format: this.format,