May weather forecast
San Felipe, Guatemala

The last month of the spring, May, is another hot month in San Felipe, Guatemala, with an average temperature varying between 22.7°C (72.9°F) and 31.5°C (88.7°F).

Temperature

May observes an average high-temperature of a still hot 31.5°C (88.7°F), marking an insignificant difference from April's 32.5°C (90.5°F). San Felipe encounters an average low-temperature of 22.7°C (72.9°F) during May nights.

Heat index

In May, the average heat index is calculated to be a fiery hot 39°C (102.2°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
When referencing the heat index, its values are suitable for shady environments and light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In May, the average relative humidity is 71%.

Rainfall

The month with the most rainfall is May, when the rain falls for 26.8 days and typically aggregates up to 261mm (10.28") of precipitation.

Daylight

The average length of the day in May is 12h and 49min.
On the first day of May, sunrise is at 05:43 and sunset at 18:23. On the last day of the month, sunrise is at 05:36 and sunset at 18:32 CST.

Sunshine

The average sunshine in May is 11.2h.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Boost your sun resistance with garments that are densely woven yet spacious.