March weather forecast
Usulutan, El Salvador

March brings further climatic variation to Usulutan, with an ever so slight warming trend. The bit of warmth experienced ends up being accompanied by the year's first significant rainfall, registering at 12mm (0.47"). The daylight period continues to expand, and the amount of sunshine witnessed increases as well. Interestingly, in March, cloudiness shows an uptick which, however, doesn't drastically affect the overall visibility. As March concludes, Usulutan looks forward to welcoming the hot summer season.

Temperature

March, with its average high-temperature of 33.2°C (91.8°F) and an average low-temperature of 22.5°C (72.5°F), holds the record as the warmest month.

Heat index

The heat index in March is appraised at a blistering 40°C (104°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

With an average relative humidity of 61%, March is the least humid month.

Rainfall

In Usulutan, during March, the rain falls for 8.1 days and regularly aggregates up to 12mm (0.47") of precipitation. Throughout the year, in Usulutan, there are 206.2 rainfall days, and 1242mm (48.9") of precipitation is accumulated.

Daylight

The average length of the day in March in Usulutan is 12h and 4min.
On the first day of the month, sunrise is at 06:09 and sunset at 18:02. On the last day of March, in Usulutan, sunrise is at 05:49 and sunset at 18:05 CST.

Sunshine

In Usulutan, the average sunshine in March is 10.7h.

UV index

January through September and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in March suggests the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.