April weather forecast
Alajuela, Costa Rica

Alajuela, Costa Rica, sees a significant transformation in weather as April rolls around. The climb in maximum and minimum temperatures hand in hand with the increased rainfall, signals the curtain drop on the dry season. Despite the rainfall, which totals 96mm (3.78") in around 21.7 days, the city sees longer daylight and higher UV indexes. Nevertheless, the increase in cloud coverage does not seem to significantly impact the city's sunshine hours. April is distinctively wetter and warmer, marking this month as the inception of the rainy season in Alajuela.

Temperature

April, with its average high-temperature of 28°C (82.4°F) and an average low-temperature of 17.5°C (63.5°F), holds the record as the warmest month in Alajuela.

Heat index

April's mean heat index is estimated at a tropical 31°C (87.8°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

The average relative humidity in April is 75%.

Rainfall

In April, in Alajuela, the rain falls for 21.7 days. Throughout April, 96mm (3.78") of precipitation is accumulated. Throughout the year, there are 289.5 rainfall days, and 2506mm (98.66") of precipitation is accumulated.

Daylight

The average length of the day in April in Alajuela, Costa Rica, is 12h and 22min.
On the first day of April in Alajuela, Costa Rica, sunrise is at 05:34 and sunset at 17:48. On the last day of the month, sunrise is at 05:19 and sunset at 17:49 CST.

Sunshine

In Alajuela, the average sunshine in April is 8.9h.

UV index

March and April, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during April translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.