March weather forecast
Alajuela, Costa Rica

The climatic parameters of March in Alajuela, Costa Rica, align with those of February, although a few subtle changes do occur. An increase in low temperatures points towards slightly warmer nights. March signifies consistency in Alajuela's tropical weather, with longer daylight hours setting the stage for more sunshine duration. Contrastingly, cloud cover witnesses a spike, projecting a more cloudy outlook. March has noticeably heavier rainfall than its preceding month, registering 30mm (1.18") across approximately 16.5 days.

Temperature

The beginning of March in Alajuela records an average high-temperature of a still warm 27.8°C (82°F), marking a negligible difference from February's 26.9°C (80.4°F). During March nights, Alajuela witnesses a consistent average temperature of 15.9°C (60.6°F).

Heat index

March's average heat index is estimated at a hot 30°C (86°F). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

March is the least humid month, with an average relative humidity of 71%.

Rainfall

In Alajuela, during March, the rain falls for 16.5 days and regularly aggregates up to 30mm (1.18") of precipitation. 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 March in Alajuela is 12h and 5min.
On the first day of the month, sunrise is at 05:51 and sunset at 17:48. On the last day of March, sunrise is at 05:34 and sunset at 17:48 CST.

Sunshine

In Alajuela, the average sunshine in March is 9.1h.

UV index

The months with the highest UV index in Alajuela are March and April, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 6 in March leads to these guidelines:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.