March weather forecast
Los Chiles, Costa Rica

The first month of the spring, March, is a hot month in Los Chiles, Costa Rica, with an average temperature fluctuating between 30.7°C (87.3°F) and 21.6°C (70.9°F).

Temperature

March's beginning signals an average high-temperature of a tropical 30.7°C (87.3°F), barely different from February's 29.1°C (84.4°F). Los Chiles observes an average low-temperature of 21.6°C (70.9°F) during March.

Heat index

In March, the heat index is calculated to be a very hot 39°C (102.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in March is 78%.

Rainfall

March is the month with the least rainfall. Rain falls for 22.4 days and accumulates 37mm (1.46") of precipitation.

Daylight

In Los Chiles, Costa Rica, the average length of the day in March is 12h and 5min.
On the first day of March, sunrise is at 05:52 and sunset at 17:48. On the last day of the month, sunrise is at 05:35 and sunset at 17:49 CST.

Sunshine

In Los Chiles, the average sunshine in March is 6.7h.

UV index

The months with the highest UV index are March through June, August and September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In March, the maximum UV index of 7 transforms into these recommendations:
Fend off overexposure. Sun protection is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.