April weather forecast
San Vicente, Costa Rica

April in San Vicente signals the start of the rainy season with an average rainfall of 86mm (3.39"), making a significant leap from the previous month’s 21mm (0.83"). The city prepares for the upcoming torrential rain months. Despite this escalation, the temperatures and humidity are still relatively stable. Wind speeds in San Vicente take a slower pace, setting a calming atmosphere for the city's annual festivities. April, carrying the bursting clouds on its shoulder, ushers in the vital rainfall needed for Costa Rica's flourishing flora.

Temperature

During March and April, San Vicente experiences its warmest period, with an average high-temperature of 29.7°C (85.5°F).

Heat index

April's average heat index is evaluated at a torrid 35°C (95°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In San Vicente, the average relative humidity in April is 73%.

Rainfall

In San Vicente, in April, it is raining for 20 days, with typically 86mm (3.39") of accumulated precipitation. In San Vicente, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.

Daylight

In April, the average length of the day is 12h and 21min.
On the first day of April, sunrise is at 05:32 and sunset at 17:46. On the last day of the month, sunrise is at 05:18 and sunset at 17:47 CST.

Sunshine

The average sunshine in April in San Vicente is 9.1h.

UV index

The months with the highest UV index are January through April, June, July, September, October and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 during April translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.