March weather forecast
Atenas, Costa Rica

In March, Atenas, Costa Rica witnesses higher temperature averages, reaching 29.7°C (85.5°F). The city starts gearing up for the higher rainfall and humidity levels impending in the next few months. Relative to February, the city experiences increased daylight and sunshine hours. Variations in temperature range grow, demonstrating the dynamic weather patterns customary of this time period. Towards the end of March, signs of the approaching rainy season start becoming evident with increasing cloud covers.

Temperature

In Atenas, March and April are characterised by the peak of temperatures, recording an average high of 29.7°C (85.5°F).

Heat index

The heat index value for March is evaluated at a tropical 34°C (93.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 largely significant for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

March is the least humid month, with an average relative humidity of 70%.

Rainfall

In Atenas, during March, the rain falls for 14.5 days and regularly aggregates up to 21mm (0.83") of precipitation. In Atenas, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.

Daylight

In March, the average length of the day in Atenas 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, in Atenas, sunrise is at 05:34 and sunset at 17:48 CST.

Sunshine

The month with the most sunshine in Atenas is March, with an average of 9.4h of sunshine.

UV index

January through April, June, July, September, October and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In March, the average maximum UV index of 6 translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.