Will you more need sunglasses in tropic than in subtropic?

When you travel somewhere, will you more need sunglasses in tropic than in subtropic?

The answer is 'not necessarily'. Here the reason is.

------------------

The tropics are the geographic region centered on the equator and limited in latitude by the Tropic of Cancer at approximately 23°30' N latitude and the Tropic of Capricorn at 23°30' S latitude. The word "tropics" comes from Greek tropos meaning "turn", because the apparent position of the Sun oscillates between the two tropics with a period that defines the average length of a year.

In the Tropics, the sun is directly overhead at least once during the year - at the edges of the tropics this occurs at the summer solstice and over the equator at the equinoxes. This is the hottest part of the earth, and there are two annual seasons: a dry and a wet. This zone includes most of Africa, southern India, southern Asia, Indonesia, New Guinea, northern Australia, Central America and northern South America.

Tropical plants and animals are those species native to the tropics. Tropical is also sometimes used in a general sense for a tropical climate, a climate that is warm to hot and moist year-round, often with the sense of lush vegetation. However, there are places in the tropics that are anything but "tropical" in this sense, with even alpine tundra and snow-capped peaks, including Mauna Kea, Mt. Kilimanjaro, and the Andes as far south as the northernmost parts of Chile and Argentina. Places in the tropics which are drier with low humidity but extreme heat are such as the Sahara Desert and Central Africa and Northern Australian Outback.

The subtropics refers to the zones immediately north and south of the tropic zone. The term can be used loosely to mean a range of latitudes between 23.5 and approximately 40 degrees. These areas typically have hot summers-- even hotter than tropical climates. A subtropical climate implies that the air temperature usually does not go below freezing (0°C or 32°F). This is a threshold temperature for a gamut of plants, and applies to coastal California, Florida, northern India, most of eastern Australia, Texas, and coastal South Africa, for example. The poleward limit of such climates is higher on the west coasts of the northern continents and lower on the east coasts, because occasional Winter cold snaps reach farther south in the east. Some subtropical cities include New Delhi, Hong Kong, Athens, Curitiba, Cairo, Mexico City, Miami, Los Angeles, Houston, New Orleans, Brunswick, Georgia, Orlando, Tampa and Brisbane. Cities such as Darwin, Townsville and Cairns are not subtropical, and have truly tropical climates.

In certain areas of the world the subtropics are plagued by hurricanes, typhoons or tropical cyclones that originate in the tropics in the summer and fall. Subtropical locations don't usually have distinctly wet or dry seasons, and have a fairly even distribution of rain throughout the year.

At latitudes closer to the poles, the subtropical climate gives way to a "temperate" climate, characterized by annual mean temperatures of less than 20°C or 68°F and warmest month average temperatures of over 10°C or 50°F.