RNAsol is a method for the prediciton of position-specific relative solvent accessible surface areas for RNAs. RNAsol was built based on improved sequence profiles from sequence-profile alignment and trained with the long short-term memory (LSTM) neural networks. Independent tests on the same datasets used by method RNAsnap show that RNAsol's accuracy is 26.5% and 136.4% higher than that of RNAsnap, for protein-bound RNAs and protein-free RNAs. The input to RNAsol is the nucleotide sequence of the RNA to be predicted. The output includes the accessible surface area for each nucleotide in the RNA sequnece.