Looking on the internet deeply has found these results:

In the sunshine is the most popular phrase on the web.

Under the sunshine 11,020,000 results on the web	In the sunshine 132,500,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	First of all, I'm going to remember you walking along the quays of Italy in the sunshine with a trail of signori behind you shouting "bella, bella, bella." Well, you can always take long walks in the sunshine. Look at it, gleaming in the sunshine. Unless you're Jerry Patch, and you live for your Sunday brunch in the sunshine. Big Clyde going to catch him some rays, some love in the sunshine. At last this country can finally bask in the sunshine of a true democracia. It's good to get out in the sunshine and the fresh air. Up there I create action in the sunshine.

Under the sunshine

11,020,000 results on the web

In the sunshine

132,500,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

First of all, I'm going to remember you walking along the quays of Italy in the sunshine with a trail of signori behind you shouting "bella, bella, bella."
Well, you can always take long walks in the sunshine.
Look at it, gleaming in the sunshine.
Unless you're Jerry Patch, and you live for your Sunday brunch in the sunshine.
Big Clyde going to catch him some rays, some love in the sunshine.
At last this country can finally bask in the sunshine of a true democracia.
It's good to get out in the sunshine and the fresh air.
Up there I create action in the sunshine.