Temperature stability in Central America

Once, a friend of mine wondered if there was a place in the world where the temperature stays more or less the same throughout the year. “Well, check out the areas around the equator”, I said and made this map. Although yes, the Caribbean and Central America are not the closest areas to the equator, I still think the stability of air temperature in this region is absolutely astonishing.

For this map, I used the data from WMO, respective Wikipedia pages and a bit of Weather Spark.