In the eastern part of the country it rains more than in the west. There are three temperature zones in Nicaragua. In the lowlands (Pacific and Atlantic coast) temperatures vary roughly between 72Â° F at night and 86Â° F at daytime (22Â° C - 30Â° C). Temperature can reach 100Â° F in May (38Â° C).
Dark circles, or bags under your eyes, have many causes. These include: 1  Increased melanin (also called hyperpigmentation) also post-inflammatory hyperpigmentation due to allergies ('allergic shiners'). 2  Fat loss beneath the eye or shadowing due to skin laxity. 3  Broken blood vessels.
Conditions like fluid imbalance or local swelling that lead to puffy or swollen eyelids can cause shadows that make the area under the eyes appear darker. Trauma (a black eye) can cause darkening of the entire eye area. Some people notice that dark circles under the eyes tend to run in families, as well. In most cases, dark circles under the eyes are not a sign of a serious medical condition. Medically Reviewed by a Doctor on 3/6/2012.