It does not "read" as a sunny day, but it looks like it was shot in open shade,and that the top of the frame is the only area of the frame that is lighted by direct light from the sky.
The tone curve is too soft to simulate "sunny" weather. The black point is too high,and the local contrast is too flat to simulate a sunny day. So far it's three to one telling you it appears too bright. Add my opinion and it's 4 people in a row telling you it looks too "bright". It looks too bright because there are no deep blacks, local contrast is very low, and the image appears to have been shot in open shade with sunlight behind the main subject area. The sunlighted area,shown at the top of the frame, appears grossly overexposed, and has the typical look of overexposed digital--there's a strong posterized line where the green grass meets the blown out sunlighted areas at the top of the image.
If you cropped of the blown-out sunlighted area at the top and adjust the black point either with levels or by simply moving the curve over a tad bit, you'd have an image that would represent the lighting I *think* you were looking for.