This could be due to many reasons. The tear duct duct could be blocked. You need to see an ophthalmologist to check the patency of the tear passage. Other possibilities could be allergy, dryness, blepharitis etc. Watering from the eyes is a very common condition. Since, watering is excessive it may be due to a block in tear passage. Thanks and best wishes.
You will have to rule out the possibilities, I have mentioned above. Also a refractive error is to be ruled out. If watering is not excessive then it may not be due to a block in tear passage. Slight watering is common in windy condition but in people who have the conditions mentioned above, the response can be exagerrated. Thanks.