June weather forecast
San Marcos, El Salvador

Weather dynamics in June exhibit a slight moderation compared to May. While the month maintains the momentum of the wet season with 179mm (7.05") rainfall across 26 days, this is less than the previous record of 267mm (10.51"). Even so, this rainfall is substantial, and cloud cover of 39% persists. The increased cloudiness results in slightly fewer daily sunshine hours compared to the drier months. It's still fairly warm despite the rain, with a consistent relative humidity of 80% that heightens the muggy feeling in general.

Temperature

San Marcos commences June with an average high-temperature of a still tropical 30.8°C (87.4°F), maintaining a close resemblance to the previous month. During June, San Marcos's temperature falls to a steady low-temperature average of 21.7°C (71.1°F).

Heat index

In June, the average heat index is computed to be an extremely hot 40°C (104°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In June, the average relative humidity in San Marcos is 80%.

Rainfall

In June, in San Marcos, the rain falls for 26.2 days. Throughout June, 179mm (7.05") of precipitation is accumulated. In San Marcos, El Salvador, during the entire year, the rain falls for 196.7 days and collects up to 1216mm (47.87") of precipitation.

Daylight

June has the longest days of the year in San Marcos, with an average of 12h and 54min of daylight.
On the first day of the month, sunrise is at 05:28 and sunset at 18:21. On the last day of June, sunrise is at 05:32 and sunset at 18:28 CST.

Sunshine

The average sunshine in June is 10.4h.

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 health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 6 during June leads to these advisories:
Guard against overexposure. Protection from sun-induced harm is essential. 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. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.