March weather forecast
Caldera, Costa Rica

The first month of the spring, March, is also a hot month in Caldera, Costa Rica, with temperature in the range of an average low of 23°C (73.4°F) and an average high of 32.8°C (91°F).

Temperature

March, having an average high-temperature of 32.8°C (91°F) and an average low-temperature of 23°C (73.4°F), is the warmest month.

Heat index

March's average heat index is appraised at a blistering 40°C (104°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

With an average relative humidity of 63%, March is the least humid month in Caldera.

Rainfall

In March, in Caldera, Costa Rica, the rain falls for 4.5 days. Throughout March, 5mm (0.2") of precipitation is accumulated. Throughout the year, in Caldera, there are 218.6 rainfall days, and 1456mm (57.32") of precipitation is accumulated.

Daylight

The average length of the day in March is 12h and 5min.
On the first day of the month, sunrise is at 05:52 and sunset at 17:49. On the last day of March, in Caldera, sunrise is at 05:36 and sunset at 17:49 CST.

Sunshine

March has the most sunshine of the year, with an average of 9.9h of sunshine.

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 vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 7 in March leads to these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.