May weather forecast
Cocal, Costa Rica

The last month of the spring, May, is also a moderately hot month in Cocal, Costa Rica, with an average temperature fluctuating between 25.3°C (77.5°F) and 29.7°C (85.5°F).

Temperature

The arrival of May coincides with an average high-temperature of a still warm 29.7°C (85.5°F), indicating a minimal shift from April's 29.2°C (84.6°F). Cocal documents an average low-temperature of 25.3°C (77.5°F) for the nights of May.

Heat index

The heat index value during May is estimated at a very hot 35°C (95°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

May and June, with an average relative humidity of 74%, are the most humid months.

Rainfall

In Cocal, Costa Rica, in May, it is raining for 21.2 days, with typically 140mm (5.51") of accumulated precipitation. In Cocal, during the entire year, the rain falls for 241.5 days and collects up to 1580mm (62.2") of precipitation.

Daylight

In Cocal, the average length of the day in May is 12h and 35min.
On the first day of May in Cocal, sunrise is at 05:14 and sunset at 17:44. On the last day of the month, sunrise is at 05:10 and sunset at 17:50 CST.

Sunshine

In May, the average sunshine in Cocal is 8.5h.

UV index

The months with the highest UV index in Cocal are March through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.