We live in Mumbai - West coast of India, tropics. Summers are from March to July with temperatures reaching early 40 degree Celsius and a lot of humidity. It rains from July to September with temperatures in mid to late 30 degree Celsius. Octobers are hot like summers. November to March the temperatures dip to late 20 degree Celsius.
We live on the sixth floor of an apartment building in an non-air-conditioned house. Ceiling fans provide ventilation. We do not want to have air-conditioning as we believe it's harmful for the environment.
Our bedroom and living room have a 10ft X 4ft East facing window each. Two other rooms have same sized windows facing North and 5ft X 4ft windows facing East.
In the summers, things heat up quite a lot. What type of curtains should we use to make the house as comfortable as possible? Will it help if we plant vines in pots and let them crawl up the window grills? Also, should we use the same curtains during winters?