The closest weather station is in Azuga, so you can check this link:
https://weatherspark.com/m/92403/5/Average-Weather-in-May-in-Azuga-Romania
SMART 2019 - Scientific Methods in Academic Research and Teaching
The 7th Edition - Bușteni & Sinaia, Romania, May 3-5, 2019
The closest weather station is in Azuga, so you can check this link:
https://weatherspark.com/m/92403/5/Average-Weather-in-May-in-Azuga-Romania