Understand
The distinctive flavour to the city of Cologne is often linked to the city's inhabitants, or Kölsche, who take an enormous amount of pride in their city. Cologne is a traditionally Ripuarian-speaking city, though this has mostly been replaced by German, which is now the main language of the city. English-speaking guides and information are available for many of the landmarks of the city. For tourists who speak German and wish to practice it, the citizens usually have a lot of patience with those trying to come to grips with the language. Cologne's citizens are very friendly and jovial people, welcoming tourists of all types and with all interests.
Away from the landmarks, workers of the Deutsche Bahn German railways often speak English reasonably well, and ticket machines have a language selection feature. In general, older people in Cologne tend to have little or no knowledge of English, while younger Germans and those working in the business world tend to be reasonably proficient. Language is rarely a strong barrier, so this shouldn't be too much of a worry for the average tourist. Just approach a friendly native and use a smile on your face.
Cologne has an excellent public transport network consisting of trams, local trains and buses. Bicycles are also available for hire on the northern side of the Hauptbahnhof. Local transport systems rarely provide announcements in English, but network maps are commonly available to assist with your journey. Those wishing to explore area away from the central city should plan their journey and potential connections before leaving. The KVB Kölner Verkehrs-Betriebe website (http://www.kvb-koeln.de/g...) is a good source of public transport information.
Climate
The climate of northwestern Germany is changeable, with seasonal changes and day-to-day weather often comparable to that of the United Kingdom or Northern France. Travellers to Cologne can expect the hottest time of the year to be July in July 2010 the temperatures were above 30 degrees for several days , the coldest is January temperature hovering around the freezing mark and the month with the most precipitation is June.