May weather forecast
Herradura, Costa Rica

May, regarded as the start of the wet season in Costa Rica, shows a dramatic rise of rainfall, peaking to 201mm (7.91") this month. It's a month known for its unique blend of warm tropical temperatures and increased moisture levels. Despite the frequent showers, tourists can enjoy a good blend of sun and cloud. The gentle wind, paired with increased daylight hours, brings an added charm to this city. So, if you want to enjoy Costa Rica’s magnificent biodiversity, May presents a unique lens to view its well-watered lush landscapes.

Temperature

The advent of May observes an average high-temperature of a warm 29.5°C (85.1°F), nearly identical to April's 30.4°C (86.7°F). Herradura, during the nights of May, averages a temperature close to its daytime high, at 26.2°C (79.2°F).

Heat index

In May, the average heat index is computed to be a torrid 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild 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 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in May in Herradura is 77%.

Rainfall

In Herradura, during May, the rain falls for 25.3 days and regularly aggregates up to 201mm (7.91") of precipitation. In Herradura, during the entire year, the rain falls for 236.2 days and collects up to 1501mm (59.09") of precipitation.

Sea temperature

March through August, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Herradura.
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

In Herradura, Costa Rica, the average length of the day in May is 12h and 34min.
On the first day of May in Herradura, sunrise is at 05:21 and sunset at 17:49. On the last day of the month, sunrise is at 05:16 and sunset at 17:55 CST.

Sunshine

In May, the average sunshine in Herradura is 8.7h.

UV index

The months with the highest UV index in Herradura are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Herradura. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 7 during May translates into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Caution! The mirror effect of sand and water ups the UV radiation strength.