May weather forecast
Umatac, GU

As May rolls in, Umatac, Guam welcomes increased rainfall, registering at a high of 3.31" (84mm), a significant leap from April. This surge underscores the ongoing shift towards the inclemency of the rainy season. Amidst this, the weather tames the turbulent winds, making way for a noticeable drop in wind speed. Temperature ledger maintains its consistency, facilitating an enjoyable tropical climate. Concurrently, the steady UV index necessitates the need for sun safety precautions.

Temperature

Upon the onset of May, Umatac witnesses an average high-temperature of a still moderately hot 84.2°F (29°C), showing a close resemblance to the prior month. The nights of May are characterized by an average low-temperature of 82.2°F (27.9°C), subtly descending from daytime highs.

Heat index

Throughout May, the heat index is computed to be a hot 93.2°F (34°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

January, March through May, October through December, with an average relative humidity of 78%, are the most humid months in Umatac, Guam.

Rainfall

In Umatac, Guam, during May, the rain falls for 23.1 days and regularly aggregates up to 3.31" (84mm) of precipitation. In Umatac, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Daylight

In May, the average length of the day is 12h and 44min.
On the first day of the month, sunrise is at 6:00 am and sunset at 6:36 pm. On the last day of May, sunrise is at 5:53 am and sunset at 6:44 pm ChST.

Sunshine

The average sunshine in May in Umatac is 10.5h.

UV index

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Umatac. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in May suggests the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.