The strikes in France are likely to cause disruption to ferry routes and flights in the coming weeks.
UK nationals are advised to check before travelling and prepare for possible delays.
The Foreign, Commonwealth and Development Office (FCDO) said: “Planned industrial action by dockers and air traffic control unions is expected to cause disruption to some ferry routes and flights across France throughout June, with some routes and flights being diverted or cancelled.”
“Before you travel, check your operator's advice, including where your connecting flights are located.”
Brits warned of continuing unrest in Paris
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While disruptions are expected this month, government agencies have warned that they could continue throughout the summer, particularly in Paris.
The FCDO added: “There may be disruptions to Paris' public transport system (RATP) due to industrial action until September. Please check the RATP website for the latest updates on services.”
France is a popular travel destination for Brits because of its sandy beaches, beautiful scenery and historic cities.
Due to the risk of crime against tourists, the FCDO continues to provide advice to anyone travelling to the country.
It said: “Take appropriate precautions against street and vehicle crime. Pickpockets often act in groups: one will distract you while the other reaches into your bag. Do not leave your passport or other valuables in your car. Thieves and pickpockets operate on the Paris Metro, RER lines and main stations.”
“Don't store your passport, credit cards and other valuables in the same place, use the inner compartment of your bag if possible and carry your bag across your body rather than over your shoulder.
“Keep your belongings close to you in restaurants and bars. [do not be] Distractions can be common in tourist areas and around cash machines. If your passport is lost or stolen, we encourage you to notify the police and obtain a police report.”
France is a popular destination for tourists
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The FCDO said: “Flooding is affecting parts of Germany, particularly Bavaria and Baden-Württemberg.
“Follow the advice of local authorities and the German Weather Service and always check your transport plans before travelling.”
“Something unprecedented is happening here,” added Bavarian Prime Minister Markus Soeder, who described the situation as “serious and critical.”
