  The outdoor micro-climate caused by the presence of buildings can
significantly differ from that around weather stations located outside of urban
areas. However, the latter is often used to design buildings and size building
systems. This could lead to significant mistakes and performance gaps. To date,
there is a certain lack of experimental studies assessing the micro-climate
around buildings, especially in Scandinavian countries. The current paper
presents the preliminary results and analysis of a measurement campaign of the
temperature gradient in the two-meter air layer around the envelope of a
multi-storey office building in Denmark in the summertime. Depending on the
orientation of the external building surface (South/North fa\c{c}ade or
rooftop), the distance from the latter and the weather conditions, the
temperature in this two-meter air layer can vary significantly and differ from
the air temperature measured at nearby open fields or recorded by the reference
weather station. During sunny days, a temperature gradient of up to 3.4 {\deg}C
and 13.6 {\deg}C was measured in the air layer around the South fa\c{c}ade and
the rooftop, respectively. These results could help to validate urban climate
models and bridge the gap between building design and real-condition
performance. The curated dataset of this measurement campaign is available in
open access.
