Direct and diffuse solar intensity, critical for calculating heat gain.
These are the most common files, created by statistically selecting the 12 most "typical" months from a multi-year period (often 10–30 years). The Weather Files
As the climate shifts, historical data (TMY) may become less representative of a building's future lifespan. Engineers now use to "future-proof" designs. Direct and diffuse solar intensity, critical for calculating
Many countries provide localized data, such as the Building Performance site for Aotearoa New Zealand. An In-Depth Look at Weather Files - ClimateData.ca Direct and diffuse solar intensity