May weather forecast
Pago Pago, AS

Come May, Pago sees a continuation of April's trends but with slight changes. The high temperature takes a downturn, while the low temperature holds steady. May's noticeable weather feature is the slight increase in rainfall, which stands at 4.84" (123mm). The extended overcast skies result in fewer hours of sunlight, affecting the daylight hours. Notwithstanding, the slight dip in sea temperature does little to deter water activities and beach trips.

Temperature

May's climate shows a minor adjustment in average high-temperatures to a still moderately hot 83.3°F (28.5°C) from April's 84°F (28.9°C). Pago registers a gentle descent to an average nighttime low of 81.5°F (27.5°C) in May from its daytime highs.

Heat index

The heat index for May is appraised at a hot 91.4°F (33°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

In May, the average relative humidity is 77%.

Rainfall

In May, the rain falls for 24.4 days. Throughout May, 4.84" (123mm) of precipitation is accumulated. Throughout the year, there are 280 rainfall days, and 49.96" (1269mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature is 84.6°F (29.2°C).
Note: In any water activity, temperatures between 77°F (25°C) and 84.2°F (29°C) are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.

Daylight

The average length of the day in May is 11h and 27min.
On the first day of May, sunrise is at 6:32 am and sunset at 6:07 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:00 pm SST.

Sunshine

The average sunshine in May is 7.9h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. 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 vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, an average UV index of 7 transforms into the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Stay aware! UV radiation is magnified when reflecting off sand and water.