Although climate variations have always occurred naturally on the planet, the term ‘climate change’ appears to refer to the significant modifications that have occurred in recent decades. Between 2000 and 2019, the estimated deaths due to extreme heat amounted to 489,000. The effects of climate change are visible in all parts of the world; however, urban areas are the most affected in terms of temperatures and air quality, generating the phenomenon known as Urban Heat Island (UHI). More than half of the world’s current population resides in urban areas. Therefore, it is necessary to promote large-scale urban regeneration and renewal as a tool to fight climate change. In this sense, the recovery of public space is essential, revitalizing streets, squares and sidewalks as places of permanence, leisure and entertainment seeking to improve the comfort of the occupants. The evaluation of thermal comfort in urban environments requires an experimental investigation of microclimatic conditions and their variations, which allows us to know which elements of the environment affect them to a greater or lesser extent and whether their effect is positive or negative on the occupant. For a correct design of urban spaces, it is essential to be able to differentiate in a simple and precise way the convective effect of the air, the long-wavelength radiant effect of the surfaces and the sky and the short-wavelength radiant, that is, the effect of solar radiation. Existing methods for this are highly complex, expensive and time consuming. For this reason, an experimental measurement methodology of radiant exchange is proposed that allows to distinguish between solar input and long-wavelength radiant in a simple, cheap way and applicable to all climatic zones. This methodology is integrated into the thermal comfort evaluation process, generating a global procedure that has been validated in a real environment in the city of Seville, Spain. This global approach allows, given an urban space, to precisely identify and characterise the parameters that influence the comfort of occupants within an urban environment. On the other hand, surveys are carried out with the aim of knowing the thermal perception of the occupants. These subjective data are crossed with objective results obtained through monitoring and experimental measurement of radiant exchange, allowing the level of comfort to be customised depending on the potential occupant. The integration of subjective perception with objective results allows for a more complete and detailed assessment of thermal comfort in the urban environment. This cross-referencing of data helps to refine the understanding of how occupants experience weather conditions. In addition, the validation of the proposed procedure ensures the robustness and applicability of the methodology in different urban contexts.