A skateboarder with a black and white hat at the top of a jump on a snowy day.
A skateboarder is outdoors.
A skateboarder at the top of a jump on a snowy day implies that he is outdoors.
The fact the skateboarder is at the top of a jump and it's visibly a 'snowy day' indicates that he is outdoors.
If he is at the top of a jump on a snowy day, it would be assumed that he is outside.