I`m not sure how long a double bass needs to acclimate to a new environment, but it might take "awhile".....
Changes due to humidity such as expanding/contracting wood will probably happen over days. Going from humid to dry or vice versa, you'd want to check and adjust if necessary the soundpost and string heights. This is what we do in the midwest and northeast US with the seasons changing.
Berlin humidity today is 84% and San Jose is 100% with rain. I would think the bass will be fine in Costa Rica without major changes.
Last edited: