May weather forecast
San Pedro Nonualco, El Salvador

May, the last month of the spring in San Pedro Nonualco, is also a hot month, with an average temperature fluctuating between 23.5°C (74.3°F) and 31.8°C (89.2°F).

Temperature

May commences with an average high-temperature of a still hot 31.8°C (89.2°F), showing little deviation from April's 33.3°C (91.9°F). San Pedro Nonualco, during the month of May, experiences an average low-temperature of 23.5°C (74.3°F).

Heat index

For most parts of May, the heat index is appraised at a blistering 42°C (107.6°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In San Pedro Nonualco, the average relative humidity in May is 76%.

Rainfall

In May, in San Pedro Nonualco, the rain falls for 28.7 days. Throughout May, 181mm (7.13") of precipitation is accumulated. In San Pedro Nonualco, El Salvador, during the entire year, the rain falls for 216.4 days and collects up to 1164mm (45.83") of precipitation.

Daylight

In May, the average length of the day is 12h and 46min.
On the first day of the month, sunrise is at 05:33 and sunset at 18:11. On the last day of May, in San Pedro Nonualco, sunrise is at 05:27 and sunset at 18:19 CST.

Sunshine

The average sunshine in May in San Pedro Nonualco is 10.4h.

UV index

January through July and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.