Your dry eyes may be caused by the seasonal allergies. You could go to the hospital to have a check on the eyes. The temperature difference in every climate transformation is happened between the big or warm wet season. Many people often have skin allergy phenomenon due to various environmental factors, the air distribution of bacterial spores and pollen sensitizer which will release a large number of almost all the compound histamine of organizations in the human body. All the above can cause congestion, sneezing, runny nose, throat itching, eyelid phenomenon and so on. Some people may even get the swelling phenomenon in the skin all over the body. The eyes will feel dry which may even become red. You could use the eye drops to release the symptom. In addition, you could eat more vegetables to add the vitamin C to moisture the eyes.