May weather forecast
Inarajan, GU

The weather in May sees Inarajan, Guam welcoming the summer months. Temperatures float in the higher bracket, and sea temperatures also follow suit. Whilst May might not appear as the wettest month, there is a sharp rise in rainfall from April to 3.31" (84mm). The increased rain does not preclude the joys of the summer as daylight and sunlight hours remain comfortably high. Despite being the start of the rainy season, May still retains a fair balance of sun and rain, providing ample opportunities for engaging in the island's offerings.

Temperature

Inarajan records a slight change with May's average high-temperatures adjusting to a still warm 84.2°F (29°C) from April's 82.9°F (28.3°C). Inarajan's nighttime average temperature in May drops marginally from the daytime highs, settling at a still moderately hot 82.2°F (27.9°C).

Heat index

In May, the heat index is evaluated at a tropical 93.2°F (34°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

The months with the highest humidity in Inarajan are January, March through May, October through December, with an average relative humidity of 78%.

Rainfall

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

Ocean temperature

In May, the average ocean temperature is 84°F (28.9°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Inarajan, the average length of the day in May is 12h and 44min.
On the first day of the month, sunrise is at 5:59 am and sunset at 6:36 pm. On the last day of May, in Inarajan, sunrise is at 5:53 am and sunset at 6:44 pm ChST.

Sunshine

The average sunshine in May is 10.5h.

UV index

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 7 suggests this advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days. Alert! The Sun's UV rays are heightened by the reflection of sand and water.