I am looking for locations/places/countries that only have one season.

By seasons, I mean a large varying change in temperature and precipitation caused by the climate in the region. I am not looking for abnormal weather.

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    every location on Earth is subject to seasons. You'd have to go to Venus to avoid them. – farrenthorpe Dec 6 '14 at 5:16
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    or Mercury... or are you asking for places that the seasonal variation is minimal, like the equatorial tropics? – user889 Dec 6 '14 at 5:23
  • Cing didn't specify that the location which they are looking for were on the Earth, however. – Elberich Schneider Dec 6 '14 at 15:15
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    How do you define a season? – Peter Jansson Dec 7 '14 at 10:11
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    With some slight rewording, I think this Q raises some interesting questions. How do we measure seasonal variance? Where on the earth's surface has the smallest variance? Is 2 the least number of seasons? What about in the oceans? What about the subsurface? – kwinkunks Dec 7 '14 at 18:18

Due to the obliquity of the Earth, no place would truly have a single season, which in this answer is taken as having consistent conditions, particularly in terms of temperature and precipitation.

An environment that would qualify as having minimal seasonality are in the equatorial tropics, which according to the article Climatic seasonality, resource bottlenecks, and abundance of rainforest birds: implications for global climate change (Williams and Middleton, 2008) due to the almost consistent insolation, as shown below:

enter image description here

Image source - the blue line represents the yearly trends across the year for equatorial regions.

Although, according to the article, the temperature remains fairly constant, precipitation can have alternating wet and dry periods, and can affected by other climatic factors (depending on location) such as El Niño, monsoons etc.

However, according to the Köppen climate classification system, the closest environment that would have minimal seasonality is classified as Af, which are warm moist rainforest, located in the areas shown below:

enter image description here

Image source

An example of a location in such an environment is the city of Andagoya, Colombia, South America, (latitude 5N, elevation 65m) which has the following annual temperature and precipitation:

enter image description here

Image source: Climate Classification and Climatic Regions of the World, which describes the classification Af as lying within the influence of the Intertropical Convergence Zone (ITCZ) and experiencing very little variation in temperature and precipitation throughout the year.

  • I once heard/read about an island near the coast of Brazil that has a really small variation in temperature between night, day, summer and winter. I can't remember the details though. – Gimelist Dec 16 '14 at 20:50

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