May weather forecast
Santa Catalina, Philippines

May, the last month of the spring in Santa Catalina, is also a moderately hot month, with an average temperature ranging between min 25.9°C (78.6°F) and max 29.9°C (85.8°F).

Temperature

An average high-temperature of a moderately hot 29.9°C (85.8°F) marks May, exhibiting a close resemblance to the conditions in April. Santa Catalina's nighttime temperatures in May display a slight drop from daytime highs, averaging to a still warm 25.9°C (78.6°F).

Heat index

In May, the heat index is evaluated at a fiery hot 37°C (98.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in May is 77%.

Rainfall

In Santa Catalina, in May, it is raining for 25.5 days, with typically 128mm (5.04") of accumulated precipitation. In Santa Catalina, during the entire year, the rain falls for 248 days and collects up to 1170mm (46.06") of precipitation.

Sea temperature

In Santa Catalina, in May, the average water temperature is 29.3°C (84.7°F).
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in May is 12h and 33min.
On the first day of the month, sunrise is at 5:31 am and sunset at 5:59 pm. On the last day of May, in Santa Catalina, sunrise is at 5:27 am and sunset at 6:04 pm PST.

Sunshine

The month with the most sunshine is May, with an average of 10.3h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during May translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.