March weather forecast
San Luis, Guatemala

The first month of the spring, March, is still a warm month in San Luis, Guatemala, with an average temperature varying between 17.8°C (64°F) and 29.4°C (84.9°F).

Temperature

The onset of March brings an average high-temperature of a still warm 29.4°C (84.9°F), nearly matching the February temperature. An average temperature of 17.8°C (64°F) marks the nights in March.

Heat index

The heat index for March is calculated to be a torrid 36°C (96.8°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In San Luis, the average relative humidity in March is 80%.

Rainfall

In San Luis, in March, it is raining for 16.1 days, with typically 40mm (1.57") of accumulated precipitation. In San Luis, during the entire year, the rain falls for 260.2 days and collects up to 1135mm (44.69") of precipitation.

Daylight

The average length of the day in March is 12h and 4min.
On the first day of March, sunrise is at 06:14 and sunset at 18:05. On the last day of the month, sunrise is at 05:52 and sunset at 18:10 CST.

Sunshine

In March, the average sunshine in San Luis is 7.8h.

UV index

March, April and June, 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 threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In March, the average maximum UV index of 7 translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.