Formal:
* Il fait beau soleil ici. (This is the most literal and formal way to say it.)
Informal:
* Il y a du soleil ici. (This means "There is sun here," and is a more casual way to say it.)
* Il fait soleil ici. (This is similar to the formal version, but more informal.)
More specific:
* Le soleil brille ici. (This means "The sun is shining here.")
You can also use the more informal "ici" (here) or "chez moi" (at my place) for a more personal touch.
Here are some examples:
* Il fait beau soleil ici, on devrait aller à la plage. (It's sunny here, we should go to the beach.)
* Il y a du soleil chez moi, j'espère qu'il fait beau chez toi aussi. (It's sunny at my place, I hope it's sunny at your place too.)
* Le soleil brille ici, c'est magnifique. (The sun is shining here, it's beautiful.)