April weather forecast
Sámara, Costa Rica

As April arrives in Sámara, Costa Rica, weather conditions start to become more unsettled. Transitioning from its drier predecessor, this month ushers in an increased frequency of rainfall with an astounding increase to 38mm (1.5"). The daylight hours peak at 12.4 hours a day during this month, while the sea temperature hovers around a comfortable 29.3°C (84.7°F). Increased cloud coverage begins to shield the city from the scorching sun, as the prevalent UV index of 7 remains firm. Despite the increased rainfall, April continues to charm residents and visitors alike with its warm climate.

Temperature

Sámara's weather in April, with an average high-temperature of a still hot 32.3°C (90.1°F), subtly shifts from March's 32.4°C (90.3°F). Sámara records a consistent low-temperature of 25.3°C (77.5°F) during April nights.

Heat index

April's mean heat index is calculated to be a scorching 41°C (105.8°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in April in Sámara is 68%.

Rainfall

In Sámara, during April, the rain falls for 14.6 days and regularly aggregates up to 38mm (1.5") of precipitation. In Sámara, during the entire year, the rain falls for 205 days and collects up to 1087mm (42.8") of precipitation.

Sea temperature

In April, the average sea temperature in Sámara is 29.3°C (84.7°F).
Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.

Daylight

In April, the average length of the day in Sámara is 12h and 21min.
On the first day of the month, sunrise is at 05:38 and sunset at 17:52. On the last day of April, in Sámara, sunrise is at 05:24 and sunset at 17:53 CST.

Sunshine

In April, the average sunshine is 9.4h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 in April transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Attention! The combination of sand and water reflections enhances UV ray intensity.