Hagåtña
Guam, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Hagåtña, GU

May, the last month of the spring, in Hagåtña, is another warm month, with average temperature ranging between max 84.2°F (29°C) and min 82.2°F (27.9°C).

Temperature

In May, the average high-temperature is almost the same as in April - a still moderately hot 84.2°F (29°C). In May, in Hagåtña, the average low-temperature is 82.2°F (27.9°C).

Heat index

In May, the average heat index is evaluated at a hot 93.7°F (34.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

In May, the rain falls for 23.1 days. Throughout May, 3.31" (84mm) of precipitation is accumulated. In Hagåtña, Guam, 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: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Hagåtña, the average length of the day is 12.8h.

Sunshine

In May, the average sunshine in Hagåtña 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. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in May transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Hagåtña?

In Hagåtña, Guam, in May, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 82.2°F (27.9°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, is estimated at 93.7°F (34.3°C).

What are the most humid months in Hagåtña?

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

What is the average humidity in May in Hagåtña?

The average relative humidity in May is 78%.

How many days does it rain in May in Hagåtña?

In Hagåtña, in May, it is raining for 23.1 days, with typically 3.31" (84mm) of accumulated precipitation.

How warm is the water in May in Hagåtña?

In Hagåtña, Guam, in May, the average water temperature is 84°F (28.9°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Hagåtña have in May?

In Hagåtña, the average length of the day in May is 12.8h.

How many hours of sunshine does Hagåtña have in May?

In Hagåtña, the average sunshine in May is 10.5h.

What is the month with the highest UV index in Hagåtña?

Months with the highest UV index in Hagåtña, Guam, are January through August, October through December, with an average maximum UV index of 7.

How high is the UV index in May in Hagåtña?

In May, the average daily maximum UV index in Hagåtña, Guam, is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the UV radiation.
Average temperature in May - Hagåtña, GU
  • Average high temperature in May: 29°C

The warmest months (with the highest average high temperature) are July and August (29.3°C).
The month with the lowest average high temperature is February (27.6°C).

  • Average low temperature in May: 27.9°C

The month with the highest average low temperature is June (28.5°C).
The coldest month (with the lowest average low temperature) is February (26.5°C).

Average humidity in May - Hagåtña, GU
  • Average humidity in May: 78%

Months with the highest relative humidity are January, March, April, May, October, November and December (78%).
The month with the lowest relative humidity is August (76%).

Average rainfall in May - Hagåtña, GU
  • Average rainfall in May: 84mm

The wettest month (with the highest rainfall) is September (261mm).
The driest month (with the least rainfall) is March (46mm).

Average rainfall days in May - Hagåtña, GU
  • Average rainfall days in May: 23.1 days

Months with the highest number of rainy days are July and August (28.9 days).
The month with the least rainy days is February (17.5 days).

Average sea temperature in May - Hagåtña, GU
  • Average sea temperature in May: 28.9°C

The best month for swimming (with the highest average sea temperature) is August (29.7°C).
The coldest month (with the lowest average sea temperature) is February (27.8°C).

Average daylight in May / Average sunshine in May - Hagåtña, GU
  • Average daylight in May: 12.8h

The month with the longest days is June (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in May: 10.5h

The month with the most sunshine is June (Average sunshine: 10.6h).
The month with the least sunshine is November (Average sunshine: 6.3h).

Average UV index in May - Hagåtña, GU
  • Average UV index in May: 7

Months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 7).
The month with the lowest UV index is September (UV index 6).