May weather forecast
Zacapa, Guatemala

In May, Zacapa experiences a distinct change in weather. The ample warmth of April dovetails into May, keeping temperatures high. Yet, this is aptly balanced by the most significant amount of sunshine hours, offering a pleasant warmth. The significant rainfall of 97mm (3.82") evidences the height of the wet season, which in turn increases the humidity. Transitioning into June, expect steady weather conditions with minor variations in rain and temperatures.

Temperature

Zacapa commences May with an average high-temperature of a still hot 31.6°C (88.9°F), maintaining a close resemblance to the previous month. An average nighttime temperature of 20.2°C (68.4°F) is noted during the month of May.

Heat index

The heat index in May is appraised at an extremely hot 40°C (104°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In May, the average relative humidity in Zacapa is 73%.

Rainfall

In Zacapa, in May, during 21.6 rainfall days, 97mm (3.82") of precipitation is typically accumulated. In Zacapa, during the entire year, the rain falls for 193.9 days and collects up to 636mm (25.04") of precipitation.

Daylight

In May, the average length of the day is 12h and 50min.
On the first day of the month, sunrise is at 05:34 and sunset at 18:15. On the last day of May, in Zacapa, sunrise is at 05:26 and sunset at 18:24 CST.

Sunshine

In May, the average sunshine in Zacapa is 10.5h.

UV index

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 6 during May leads to these instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.