Summer festivals and fairs proliferate paying no heed to the weather.
Friday: Open City London Documentary Festival is on till Sunday in and around UCL and all tickets are a fiver.
Enjoy DJ sets of ballroom reggae, ska and rocksteady in the Clore Ballroom, Royal Festival Hall at 7pm and 10pm.
Saturday: London Walkabout 2011 starts at 10am at Hyde Park's Band Stand and goes through Green Park and ends at St James Park. Do the full 15k or the short 5k route, both on wheelchair accessible paths. It's free to take part as the aim of the walk is to promote awareness for people with mobility disabilities.
Trafalgar Square will be full of whooping and screaming musical fans all weekend for West End Live. It's free to attend but elbows out if you want to get a good view.
Myatt's Fields Midsummer Fair takes place in Camberwell from 1pm to 5pm and includes free music, fairground, stalls, bee keeping demonstrations, flower and vegetable sales and the annual baking competition.
An African Market means drumming, workshops, homemade food and more for all the family between 12-6pm at Open The Gate, Dalston. Free entry.
Sunday: Watch the London Hong Kong Dragon Boat Festival take to the Thames from the London Regatta Centre, Royal Albert Docks E14. Racing starts from 10am with fun till 5pm. Free.
Marylebone Summer Fayre sets up in Marylebone Village on the Howard de Walden Estate between 10am-5pm with colour coded zones of music, food, stalls, shopping and entertainment.
Monday: The LSE public lecture taps into your internet fears with a talk about what the internet is hiding from you. Be at the Sheikh Zayed Theatre, New Academic Building WC2A 2AE from 6.30pm, free, first come, first served.
Tuesday: Thoughtful theatre bloggers, critics and fans can join the free debate about theatre criticism at Rich Mix E1 from 7pm. Lyn Gardner and Jake Orr lead off.
Wednesday: Lightbox presents... Supershorts at Roxy Bar and Screen, Borough High Street SE1 from 8pm, £3.