July weather forecast
San Marcos, El Salvador

Intensifying a notch lower, July emulates June, yet with a slightly lower rainfall of 120mm (4.72") spread over about 24 days. It's worth noting that the consistency of rain in July implies the enduring wet season. Subsequently, the humidity decreases marginally and the temperature sustains a similar range as June. Despite these damp conditions, the bustling city of San Marcos maintains its charm as the rain often brings about a certain refreshing change. Days in July grant warm weather combined with an average UV index of 6, which might call for sunblock application.

Temperature

July's onset in San Marcos records an average high-temperature of a still tropical 31.9°C (89.4°F), a near match to June's 30.8°C (87.4°F). The average nighttime temperature in San Marcos lowers to an agreeable 21.3°C (70.3°F) throughout July.

Heat index

The heat index for July is computed to be an extremely hot 43°C (109.4°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. 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 of high significance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in July in San Marcos is 77%.

Rainfall

In San Marcos, in July, during 23.8 rainfall days, 120mm (4.72") of precipitation is typically accumulated. In San Marcos, during the entire year, the rain falls for 196.7 days and collects up to 1216mm (47.87") of precipitation.

Daylight

In San Marcos, the average length of the day in July is 12h and 50min.
On the first day of July, sunrise is at 05:33 and sunset at 18:28. On the last day of the month, sunrise is at 05:41 and sunset at 18:24 CST.

Sunshine

In July, the average sunshine in San Marcos is 11.1h.

UV index

The months with the lowest UV index in San Marcos, El Salvador, are May through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.