Bhutan is at the same latitude as Miami and Cairo. The climate varies widely depending on the elevation. In the southern border areas it is tropical; at the other extreme, in the high Himalayan regions, there is perpetual snow. Temperatures in the far south range from 15°C in winter (December to February) to 30°C in summer (June to August). In Paro the range is from -5°C in January to 30°C in July, with 800mm of rain. In the high mountain regions the average temperature is 0°C in winter and may reach 10°C in summer, with an average of 350mm of rain. Rain occurs primarily during the southwest monsoon season from June to September.