Sunday to Thursday nights are also much quieter – drunken trouble is an all too common issue in the centre of Bath on weekend nights. And lastly, major attractions such as the Roman Baths and Thermae Bath Spa are much less busy on weekdays.
If you do plan to come at a weekend, you may want to avoid a date when Bath Rugby is playing at home (unless, of course, you want to attend a match): the pubs are very busy on match days, though not in a rowdy way. (See fixtures at bathrugby.com.)
In terms of seasons, there’s no bad time. If it’s warm, there are lots of outdoorsy attractions, such as parks, the National Trust’s very enjoyable Bath Skyline walk, river trips, canal strolls and hot air balloon rides. If it’s cold and wet, a good array of museums awaits, along with plenty of snug pubs and cafés to hole up in.