The incident occurred when a woman in her 40s was walking along a footpath in the vicinity of Esher Road and Pennyhill Park Hotel at around 2.50pm on Friday, 27 June.
The boy has been remanded in custody and is due to appear at South West Surrey Magistrates Court in Guildford, on Tuesday, 1 July.
Officers continue to appeal to anyone who was in the area around the time the offence occurred to contact them with information. This can be done by calling Surrey Police on 101 quoting reference 4514005338 or information can be provided anonymously to the independent charity Crimestoppers on 0800 555 111.
Surrey Police encourages all victims of sexual assault or abuse to contact them where specialist trained officers will support them throughout the judicial process. Advice for anyone who has been a victim or rape or sexual assault can be also be found by visiting http://www.rapecrisis.org.uk/.