May weather forecast
Dededo, GU

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Weather in May

May stands as beginning of the warmest period in the town where mercury levels slightly rise from 82.9°F (28.3°C) to 84.2°F (29°C). As the month progresses, residents notice a significant increase in rainfall that reaches an average of 3.31" (84mm). With sunshine available for a significant part of the day, Dededo turns into a lively and vibrant town. The relaxed beach culture of the island dwells in sync with May's weather patterns, enticing tourists with favorable conditions for water sports and sunbathing. The weather allows the terrain's natural hues to shine, complementing the island's tropical climate.

Temperature

Upon the onset of May, Dededo witnesses an average high-temperature of a still moderately hot 84.2°F (29°C), showing a close resemblance to the prior month. Dededo encounters a negligible difference from daytime peaks throughout the May nights, with a low-temperature average of 82.2°F (27.9°C).

Heat index

In May, the average heat index is evaluated at a tropical 93.2°F (34°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

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

Rainfall

In Dededo, in May, it is raining for 23.1 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Daylight

The average length of the day in May in Dededo is 12h and 45min.
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, sunrise is at 5:52 am and sunset at 6:44 pm ChST.

Sunshine

In Dededo, Guam, 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 reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in May interprets into the following advice:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

How hot is it in Dededo in May?

The average high-temperature, in May, in Dededo, is 84.2°F (29°C), while the average low-temperature is 82.2°F (27.9°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is evaluated at 93.2°F (34°C).

What is the most humid month in Dededo?

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

What is the average humidity in May in Dededo?

In May, the average relative humidity in Dededo is 78%.

How many days does it rain in May in Dededo?

In Dededo, Guam, during May, the rain falls for 23.1 days and regularly aggregates up to 3.31" (84mm) of precipitation.

What is the average length of the day in May in Dededo?

The average day length in May in Dededo, Guam, is 12h and 45min.

When is the sunrise / sunset in May in Dededo?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 6:36 pm. On the last day of the month, in Dededo, sunrise is at 5:52 am and sunset at 6:44 pm ChST.

How many hours of sunshine does Dededo have in May?

In May, the average sunshine duration is 10.5h.

When is the highest UV index in Dededo?

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Dededo.

What is the UV index intensity in May in Dededo?

The average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Dededo, GU

Average temperature in May - Dededo, GU
  • Average high temperature in May: 84.2°F

The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is February (81.7°F).

  • Average low temperature in May: 82.2°F

The month with the highest average low temperature is June (83.3°F).
The coldest month (with the lowest average low temperature) is February (79.7°F).

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Average pressure in May
Dededo, GU

Average pressure in May - Dededo, GU
  • Average pressure in May: 29.85"Hg

The month with the highest atmospheric pressure is February (29.88"Hg).
The months with the lowest atmospheric pressure are August, September and October (29.79"Hg).

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Average wind speed in May
Dededo, GU

Average wind speed in May - Dededo, GU
  • Average wind speed in May: 11.7mph

The windiest month (with the highest average wind speed) is February (16.3mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in May
Dededo, GU

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

The 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%).

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Average rainfall in May
Dededo, GU

Average rainfall in May - Dededo, GU
  • Average rainfall in May: 3.31"

The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").

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Average rainfall days in May
Dededo, GU

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

The 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).

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Average daylight in May /
Average sunshine in May
Dededo, GU

Average daylight in May / Average sunshine in May - Dededo, GU
  • Average daylight in May: 12h and 5min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in May: 10h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 18min).

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Average sunshine days in May
Dededo, GU

Average sunshine days in May - Dededo, GU
  • Average sunshine days in May: 4.3 days

The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is September (1.1 days).

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Average UV index in May
Dededo, GU

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

The 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).

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Average cloud cover in May
Dededo, GU

Average cloud cover in May - Dededo, GU
  • Average cloud cover in May: 39

The months with the most cloud cover are January, August and October (Cloud cover 46).
The months with the least cloud cover are May and June (Cloud cover 39).

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Average visibility in May
Dededo, GU

Average visibility in May - Dededo, GU
  • 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).

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Dededo, Guam, USA

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