Depending on your sun exposure, and the time of day, the sun may be plunging and thus getting under the umbrella.

If this is a recurring problem, we can make a shade cloth with Velcro junction on each side of the umbrella that you choose at the time of manufacture.

You can choose the fabric PARA or FERRARI cloth to be protected while having visibility to the outside.

Example :

On an Offset umbrella ARCOBALENO of  9.8x 9.8, you have a sun dipping in front of you in the afternoon: you can just put a shade cloth 9.8×3.3 high to avoid this problem. You can put it on and take it off easily with Velcro junction.