# Hygrothermal Weather Data Sources?

Our weather data is mostly derived from a number of public sources that have been compiled at <https://climate.onebuilding.org/>. Where alternative weather data is required, please contact submit a [Support Ticket](/support-and-training/support-tickets.md).

For hygrothermal modelling, it is recommended that relative humidity [External Conditions](broken://pages/HvOU6qRqQNCHIfHrGqjG) are manually increased by at least 10% for all simulations to replicate a [Wind-driven rain](broken://pages/oysoLMpGQ3HzU6PGOAgd) source. The specific weather file is stated within the results Inputs, under the Conditions Tab.&#x20;

<figure><img src="/files/IGEnC7A5Oqa4YGELMLFy" alt=""><figcaption></figcaption></figure>

## Australian Data&#x20;

Australian Data is based on "Typical Meteorological Year" (or typical weather conditions over a year) and "Representative Meteorological Year" (typical weather conditions over a year, but with more emphasis on representing a specific location unique climate characteristics.) data.&#x20;

<figure><img src="/files/ioReX9IakdAu2XgeR2SN" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Grab Australian Climate Files [here](https://climate.onebuilding.org/WMO_Region_5_Southwest_Pacific/AUS_Australia/index.html)
{% endhint %}

## New Zealand Data&#x20;

New Zealand Data is based on "Typical Meteorological Year" (or typical weather conditions over a year) for 18 locations provided by  NIWA (New Zealand National Institute of Water & Atmospheric Research).

<figure><img src="/files/IYv9ZzU9usMuTZFYfgrB" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Grab New Zealand Climate Files [here](https://climate.onebuilding.org/WMO_Region_5_Southwest_Pacific/NZL_New_Zealand/index.html)
{% endhint %}


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