May weather forecast
Monterrico, Guatemala

May is the rainiest month of a year in Monterrico, with precipitation levels reaching their peak and humidity levels steadily high. It witnesses an increase in both average high and low temperatures from the previous month, which promotes the blossoming of various species of flora around the city. The sea temperature remains consistently warm at 30°C (86°F), providing a perfect juxtaposition against the cooler inland regions. Visitors might need to adjust their outdoor plans aligning with the changing weather conditions. The month of May signals the full swing of the rainy season, which characterizes Monterrico’s weather for the bulk of the year.

Temperature

May's arrival in Monterrico, Guatemala, brings an average high-temperature of a still tropical 33.1°C (91.6°F), demonstrating subtle variation from the preceding month. May sees the temperature falling to a mean low of 26.4°C (79.5°F).

Heat index

May's average heat index is evaluated at a scorching 43°C (109.4°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
Understand that the heat index values take into account shaded locations and mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In May, the average relative humidity in Monterrico, Guatemala, is 68%.

Rainfall

In Monterrico, in May, during 23.8 rainfall days, 114mm (4.49") of precipitation is typically accumulated. Throughout the year, in Monterrico, Guatemala, there are 190.7 rainfall days, and 718mm (28.27") of precipitation is accumulated.

Sea temperature

April through June and August, with an average sea temperature of 30°C (86°F), are months with the warmest seawater.
Note: The quest for a cooling experience might be hindered in waters that exceed 30°C (86°F).

Daylight

In May, the average length of the day in Monterrico is 12h and 47min.
On the first day of the month, sunrise is at 05:39 and sunset at 18:18. On the last day of May, in Monterrico, sunrise is at 05:32 and sunset at 18:26 CST.

Sunshine

In Monterrico, the average sunshine in May is 11.2h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Monterrico are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, a daily maximum UV index of 7 leads to the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.