"Numerous demonstrations are planned" from July 12 to July 14, with a majority of protests occurring in central London on Friday, the embassy said in an alert Tuesday.
He will spend just one night in the capital before going to Prime Minister Theresa May's country retreat Chequers in Buckinghamshire.
"I have North Atlantic Treaty Organisation, I have the United Kingdom, which is in somewhat turmoil, and I have (Vladimir Putin)", Trump said as he set off on his trip to Europe which includes a meeting with the Russian President in the Finnish capital Helsinki.
With tens of thousands of Brits signed up to take part in the protests of President Trump's policies, the embassy further warned that "several of the events are expected to attract large crowds and there will be road closures in connection with these events".
The embassy advised Americans in the country to be aware of their surroundings, "keep a low profile", exercise caution if large gatherings are present, and monitor local media reports for updates.
Mr Khan was asked if he would have endorsed a giant black baby blimp of former president Barack Obama in protest during his presidency, or an image depicting Mr Khan as a pig despite that being offensive to Muslims.
"The Mayor supports the right to peaceful protest and understands that this can take many different forms", a spokesperson for the mayor said in a statement to Sky News.
Trump arrives in Britain on Thursday after a North Atlantic Treaty Organisation summit and thousands of protesters are expected to join demonstrations during his visit, including plans to fly a blimp over parliament portraying Trump as an orange, snarling baby.
The blimp has been granted permission to rise above the British Parliament for two hours on Saturday, after Trump arrives in the UK.
The Duchess of Cambridge appeared to make a special gesture to involve her tragic mother-in-law in her grandson's christening. There they would be joined by the Duke and Duchess of Cornwall and the Duke and Duchess of Sussex along with other guests.
Support for more issuers is coming soon - Eventbrite, Singapore Airlines, and Vueling have been name-dropped in the announcement. And finally, Google has updated the Google Pay web experience to both sync transactions and give you control over everything.
The tip also claimed that the Beyond 0 would have a side fingerprint scanner, whereas the 1 and 2 would have FOD functionality. Either way, it's safe to assume that we can expect improved performance from whatever chipset ends up being used.
He added that all of them were generally healthy and in good spirits, thanks to their "high immunity " from playing football. Rescuers worked in three stages, rescuing the first group of four boys in a total of nine hours on Sunday.
The PGA Tour season will end before the end of August to avoid clashing with the opening American football fixtures. Meanwhile, The Players Championship, which once occupied the month of May, will be played March 11-17, 2019.
I'm leaving but this shirt, this badge and the Santiago Bernabeu will continue to always feel as my own wherever I am. Ronaldo led Portugal to its first major title at the European Championship two years ago in France.
Earlier the PCB had tweeted that it will issue a charge sheet to the opener after Shehzad tested positive for a banned substance. In fact, the right-handed batsman Ahmed Shehzad was the leading run-getter with 372 runs while playing for Khyber Pakhtunkhwa.
With his Baltimore Orioles sitting at a league-worst 24-64, Machado will nearly certainly be on the move in the coming weeks. Despite the team's struggles Machado has had a very productive season, slashing.310/.381/.560 with 21 home runs and 59 RBIs.
4 more boys brought out of flooded Thailand cave
The boys set out to explore the vast Tham Luang cave, which is known in the area as off-limits, after soccer practice on June 23. An ambulance leaves from Tham Luang cave complex in the northern province of Chiang Rai , Thailand on July 9, 2018.
Monster Hunter World Brings The Hunt To PC In August
It has been confirmed that, if you have a silly-strong machine, you'll be able to play Monster Hunter World at 4K, 60fps. Monster Hunter: World for PC will be released earlier than expected, as it was initially pegged for a fall launch.