May weather forecast
Merizo, GU

Weather in May

May, the last month of the spring in Merizo, is another warm month, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 82.2°F (27.9°C).

Temperature

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

Heat index

The average heat index in May is computed to be a hot 93.2°F (34°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like metabolic differences, wind, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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

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

Rainfall

In Merizo, in May, during 23.1 rainfall days, 3.31" (84mm) of precipitation is typically accumulated. In Merizo, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Ocean temperature

In Merizo, the average seawater temperature in May 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

The average length of the day in May is 12h and 44min.
On the first day of May in Merizo, sunrise is at 6:00 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 6:44 pm ChST.

Sunshine

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

UV index

The months with the highest UV index in Merizo are January through August, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in May interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in May in Merizo?

The average high-temperature, in May, 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. 'feels like', 'real feel'), which combines air temperature and relative humidity, is computed to be 93.2°F (34°C).

What are the most humid months in Merizo?

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

What is the average humidity in May in Merizo?

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

How much does it rain in Merizo in May?

In May, in Merizo, Guam, the rain falls for 23.1 days. Throughout May, 3.31" (84mm) of precipitation is accumulated.

What is the water temperature in May in Merizo?

In May, the average ocean 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.

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

The average day length in May is 12h and 44min.

When is the sunrise / sunset in May in Merizo?

On the first day of May, sunrise is at 6:00 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 6:44 pm ChST.

How long on average sun shines in May in Merizo?

In Merizo, Guam, the average sunshine duration in May is 10.5h.

What are the months with the highest UV index in Merizo?

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

What is the UV index reading in May in Merizo?

In May, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in May
Merizo, GU

Average temperature in May - Merizo, 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
Merizo, GU

Average pressure in May - Merizo, 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
Merizo, GU

Average wind speed in May - Merizo, 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
Merizo, GU

Average humidity in May - Merizo, 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
Merizo, GU

Average rainfall in May - Merizo, 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
Merizo, GU

Average rainfall days in May - Merizo, 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 sea temperature in May
Merizo, GU

Average sea temperature in May - Merizo, GU
  • Average sea temperature in May: 84°F

The best month for swimming (with the highest average sea temperature) is August (85.4°F).
The coldest month (with the lowest average sea temperature) is February (82°F).

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

Average daylight in May / Average sunshine in May - Merizo, GU
  • Average daylight in May: 12h and 44min

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 22min).

  • Average sunshine in May: 10h and 30min

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
Merizo, GU

Average sunshine days in May - Merizo, 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
Merizo, GU

Average UV index in May - Merizo, 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
Merizo, GU

Average cloud cover in May - Merizo, 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
Merizo, GU

Average visibility in May - Merizo, 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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