May weather forecastPago Pago, AS
May
Weather in May
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Pago Pago, AS
- Average high temperature in May: 83.3°F
The warmest month (with the highest average high temperature) is April (84°F).
The month with the lowest average high temperature is August (81.1°F).
- Average low temperature in May: 81.5°F
The month with the highest average low temperature is March (82.4°F).
The coldest months (with the lowest average low temperature) are July, August and September (79.3°F).
Average pressure in May
Pago Pago, AS
- Average pressure in May: 29.86"Hg
The month with the highest atmospheric pressure is September (29.91"Hg).
The month with the lowest atmospheric pressure is January (29.75"Hg).
Average wind speed in May
Pago Pago, AS
- Average wind speed in May: 11.7mph
The windiest month (with the highest average wind speed) is July (15.6mph).
The calmest month (with the lowest average wind speed) is March (8.6mph).
Average humidity in May
Pago Pago, AS
- Average humidity in May: 77%
The months with the highest relative humidity are June, July, August, September and October (78%).
The month with the lowest relative humidity is March (75%).
Average rainfall in May
Pago Pago, AS
- Average rainfall in May: 4.84"
The wettest month (with the highest rainfall) is January (6.81").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in May
Pago Pago, AS
- Average rainfall days in May: 24.4 days
The month with the highest number of rainy days is March (26.1 days).
The month with the least rainy days is September (20 days).
Average sea temperature in May
Pago Pago, AS
- Average sea temperature in May: 84.6°F
The best month for swimming (with the highest average sea temperature) is March (85.4°F).
The coldest months (with the lowest average sea temperature) are August and September (82°F).
Average daylight in May /
Average sunshine in May
Pago Pago, AS
- Average daylight in May: 11h and 24min
The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 18min).
- Average sunshine in May: 7h and 54min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is July (Average sunshine: 7h and 12min).
Average sunshine days in May
Pago Pago, AS
- Average sunshine days in May: 4.6 days
The month with the most sunshine days is September (6.1 days).
The month with the least sunshine days is April (2.3 days).
Average UV index in May
Pago Pago, AS
- Average UV index in May: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in May
Pago Pago, AS
- Average cloud cover in May: 44
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is March (Cloud cover 40).
Average visibility in May
Pago Pago, AS
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
