May weather forecast
San Jose Guayabal, El Salvador

May signifies the advent of the wet season for San Jose Guayabal, marked by significant increases in rainfall. Noticeable changes include escalated humidity levels and decreased wind speeds, emphasizing the tropical climate of the region. The drastic surge in rainfall reaching 267mm (10.51") exacerbates the heat's impact. Despite this immense rainfall, the month still enjoys near-constant temperatures from 22.6°C (72.7°F) to 31.8°C (89.2°F). While ample sunshine persists, periods of heavy rain alter plans, making it important for visitors to come prepared.

Temperature

Shifting into May, San Jose Guayabal records an average high-temperature of a still hot 31.8°C (89.2°F), presenting minor fluctuations compared to the previous month. San Jose Guayabal's average low-temperature for the month of May records at an agreeable 22.6°C (72.7°F).

Heat index

For May, the heat index is computed to be a scorching 42°C (107.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In May, the average relative humidity is 76%.

Rainfall

The month with the most rainfall is May, when the rain falls for 26.9 days and typically aggregates up to 267mm (10.51") of precipitation.

Daylight

The average length of the day in May is 12h and 46min.
On the first day of the month, sunrise is at 05:34 and sunset at 18:12. On the last day of May, sunrise is at 05:27 and sunset at 18:20 CST.

Sunshine

The average sunshine in May is 10.7h.

UV index

The months with the lowest UV index are May through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 6 in May translates into these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.