Hi i want to ask one question in my country summer has started and temperature is about 40 degree. from last 3 days i notice my urine output is deactease and urine colour in morning is dark . is it normal?

Urine output depends on intake and insensible losses ( you exhale humidity) sweat and metabolic factors. If your intake and general metabolism is constant, increasing environmental temperature would be expected to reduce urine output by increasing insensible losses. Urine color is dependent both on diet and concentration. The cited changes sound normal.

It can be normal or abnormal. It is normal if your fluid intake is somewhat limited although the weather has been warm and you feel you have not adequately hydrated, i.e. more thirsty. However, if you have been drinking plenty because of warm weather but urine output has remained poor and concentrated, something is not right. If you are in the 2nd scenario, ankle edema will develop within days.