Monthly weather forecast and climate
Hagåtña, GU

January, the same as December, is a moderately hot winter month in Hagåtña, Guam, with average temperature ranging between max 82°F (27.8°C) and min 80.6°F (27°C). In Hagåtña, the average high-temperature in January is almost the same as in December - a still moderately hot 82°F (27.8°C). Weather in January »

The last month of the winter, February, is also a moderately hot month in Hagåtña, Guam, with average temperature fluctuating between 81.7°F (27.6°C) and 79.7°F (26.5°C). February is the coldest month, with an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 79.7°F (26.5°C). In February, the average heat index is evaluated at a hot 87.3°F (30.7°C). Weather in February »

March, the first month of the spring, in Hagåtña, is still a warm month, with average temperature fluctuating between 82°F (27.8°C) and 80.1°F (26.7°C). In Hagåtña, the average high-temperature in March is practically the same as in February - a still moderately hot 82°F (27.8°C). Weather in March »

April, the same as March, is a moderately hot spring month in Hagåtña, Guam, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 81.1°F (27.3°C). In Hagåtña, Guam, the average high-temperature is essentially the same as in March - a still warm 82.9°F (28.3°C). Weather in April »

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

The first month of the summer, June, is still a warm month in Hagåtña, Guam, with temperature in the range of an average low of 83.3°F (28.5°C) and an average high of 84.6°F (29.2°C). In June, the average high-temperature is almost the same as in May - a still moderately hot 84.6°F (29.2°C). Weather in June »

July, the same as June, is a moderately hot summer month in Hagåtña, Guam, with average temperature fluctuating between 82.9°F (28.3°C) and 84.7°F (29.3°C). July and August, with an average high-temperature of 84.7°F (29.3°C), are the warmest months. The average heat index in July is appraised at a hot 94.8°F (34.9°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Hagåtña, Guam, with average temperature ranging between min 82.4°F (28°C) and max 84.7°F (29.3°C). The warmest months are July and August, with an average high-temperature of 84.7°F (29.3°C). In August, the average heat index is evaluated at a tropical 94.5°F (34.7°C). Weather in August »

September, the first month of the autumn, in Hagåtña, is still a warm month, with temperature in the range of an average low of 82.8°F (28.2°C) and an average high of 84.4°F (29.1°C). In Hagåtña, the average high-temperature is relatively the same as in August - a still moderately hot 84.4°F (29.1°C). Weather in September »

October, the same as September, is another warm autumn month in Hagåtña, Guam, with average temperature varying between 84.4°F (29.1°C) and 82.6°F (28.1°C). In Hagåtña, the average high-temperature remains the same as in September - a still warm 84.4°F (29.1°C). Weather in October »

The last month of the autumn, November, is also a moderately hot month in Hagåtña, Guam, with average temperature fluctuating between 84.2°F (29°C) and 82.8°F (28.2°C). In November, the average high-temperature is almost the same as in October - a still moderately hot 84.2°F (29°C). Weather in November »

December, the first month of the winter, in Hagåtña, is still a warm month, with average temperature fluctuating between 82°F (27.8°C) and 83.5°F (28.6°C). In Hagåtña, the average high-temperature in December is almost the same as in November - a still moderately hot 83.5°F (28.6°C). Weather in December »

What is the most humid month in Hagåtña?

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

How many days does it rain in Hagåtña?

In Hagåtña, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

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

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

What is the coldest month in Hagåtña?

The coldest month is February, with an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 79.7°F (26.5°C).

When is the ocean coldest in Hagåtña?

With an average ocean temperature of 82°F (27.8°C), February is the month with the coldest seawater in Hagåtña.

What is the driest month in Hagåtña?

March is the month with the least rainfall in Hagåtña, Guam. Rain falls for 20.2 days and accumulates 1.81" (46mm) of precipitation.

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 month has the most sunshine in Hagåtña?

The month with the most sunshine in Hagåtña, Guam, is June, with an average of 10.6h of sunshine.

What are the warmest months in Hagåtña?

Warmest months in Hagåtña, Guam, are July and August, with an average high-temperature of 84.7°F (29.3°C).

What is the least humid month in Hagåtña?

With an average relative humidity of 76%, August is the least humid month in Hagåtña.

What month is the ocean warmest in Hagåtña?

August is the month with the warmest seawater in Hagåtña, with an average ocean temperature of 85.5°F (29.7°C).

What is the rainiest month in Hagåtña?

The month with the most rainfall in Hagåtña, Guam, is September when the rain falls for 28.1 days and typically aggregates up to 10.28" (261mm) of precipitation.

When is the lowest UV index in Hagåtña?

September is the month with the lowest UV index, with an average maximum UV index of 6.

What is the month with the least sunshine in Hagåtña?

November has the least sunshine of the year in Hagåtña, with an average of 6.3h of sunshine.

What is the month with the shortest days in Hagåtña?

December has the shortest days of the year in Hagåtña, Guam, with an average of 11.3h of daylight.
Average temperature - Hagåtña, GU
Average pressure - Hagåtña, GU

The month with the highest atmospheric pressure is February (1011.8mbar).
The month with the lowest atmospheric pressure is September (1008.7mbar).

Average wind speed - Hagåtña, GU

The windiest month (with the highest average wind speed) is February (26.3km/h).
The calmest month (with the lowest average wind speed) is August (15.4km/h).

Average humidity - Hagåtña, GU

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 - Hagåtña, GU
Average rainfall days - Hagåtña, GU

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 - Hagåtña, GU

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 / Average sunshine - Hagåtña, GU

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

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 sunshine days - Hagåtña, GU
Average UV index - Hagåtña, GU

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).

Average visibility - Hagåtña, GU

Months with the highest visibility are January, February, March, April, May, June, November and December (10km).
Months with the lowest visibility are July, August, September and October (9km).