The British Isles have a temperate climate that is not too extreme in temperature or precipitation. Many different air masses cross over the islands, contributing to the region's changeable weather. The document appears to provide definitions related to weather patterns in the British Isles.

1. The British Climate The British Isles has a temperate climate. This means that it is not too hot, not too cold, not too dry and not too wet!

2. Air masses affecting the British Isles Many air masses cross the British Isles, which explains our changeable weather!

3. Weather definitions