June weather forecast and climate
Hagåtña, GU

Weather in June

The first month of the summer, June, is also a moderately hot month in Hagåtña, Guam, with temperature in the range of an average high of 84.6°F (29.2°C) and an average low of 83.3°F (28.5°C).

Temperature

In June, the average high-temperature is essentially the same as in May - a still warm 84.6°F (29.2°C). In Hagåtña, the average low-temperature is 83.3°F (28.5°C).

Heat index

The average heat index is estimated at a tropical 94.3°F (34.6°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. 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', 'real feel', 'apparent temperature', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, 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 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 average relative humidity in Hagåtña is 77%.

Rainfall

In Hagåtña, during June, the rain falls for 25.4 days and regularly aggregates up to 3.7" (94mm) of precipitation. Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Ocean temperature

In Hagåtña, the average seawater temperature is 84.7°F (29.3°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

The month with the longest days is June, with an average of 12.9h of daylight.

Sunshine

With an average of 10.6h of sunshine, June has the most sunshine of the year in Hagåtña, Guam.

UV index

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Hagåtña. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in June 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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in June in Hagåtña?

The average high-temperature, in June, is 84.6°F (29.2°C), while the average low-temperature is 83.3°F (28.5°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, in June is appraised at 94.3°F (34.6°C).

What is the average humidity in June in Hagåtña?

The average relative humidity in June in Hagåtña is 77%.

How much does it rain in Hagåtña in June?

In Hagåtña, during June, the rain falls for 25.4 days and regularly aggregates up to 3.7" (94mm) of precipitation.

What is the ocean temperature in June in Hagåtña?

In Hagåtña, Guam, the average seawater temperature in June is 84.7°F (29.3°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

When are the longest days in Hagåtña?

June has the longest days of the year in Hagåtña, Guam, with an average of 12.9h of daylight.

What is the average length of the day in June in Hagåtña?

In Hagåtña, Guam, the average length of the day in June is 12.9h.

What month has the most sunshine in Hagåtña?

June has the most sunshine of the year in Hagåtña, Guam, with an average of 10.6h of sunshine.

How long on average sun shines in June in Hagåtña?

The average sunshine in June in Hagåtña, Guam, is 10.6h.

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 June in Hagåtña?

In Hagåtña, the average daily maximum UV index in June is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in June
Hagåtña, GU

Average temperature in June - Hagåtña, GU
  • Average high temperature in June: 84.6°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 June: 83.3°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 June
Hagåtña, GU

Average pressure in June - Hagåtña, GU
  • Average pressure in June: 29.84"

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

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Average wind speed in June
Hagåtña, GU

Average wind speed in June - Hagåtña, GU
  • Average wind speed in June: 11.6mph

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 June
Hagåtña, GU

Average humidity in June - Hagåtña, GU
  • Average humidity in June: 77%

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 June
Hagåtña, GU

Average rainfall in June - Hagåtña, GU
  • Average rainfall in June: 3.7"

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 June
Hagåtña, GU

Average rainfall days in June - Hagåtña, GU
  • Average rainfall days in June: 25.4 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).

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Average sea temperature in June
Hagåtña, GU

Average sea temperature in June - Hagåtña, GU
  • Average sea temperature in June: 84.8°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 June /
Average sunshine in June
Hagåtña, GU

Average daylight in June / Average sunshine in June - Hagåtña, GU
  • Average daylight in June: 12.9h

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 June: 10.6h

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

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Average sunshine days in June
Hagåtña, GU

Average sunshine days in June - Hagåtña, GU
  • Average sunshine days in June: 2.1 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 June
Hagåtña, GU

Average UV index in June - Hagåtña, GU
  • Average UV index in June: 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).

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Average cloud cover in June
Hagåtña, GU

Average cloud cover in June - Hagåtña, GU
  • Average cloud cover in June: 39

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

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Average visibility in June
Hagåtña, GU

Average visibility in June - Hagåtña, GU
  • Average visibility in June: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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