Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January's advent notes a subtle adjustment in average high-temperature to a still moderately hot 82°F (27.8°C) from December. Dededo's temperature during January nights registers a minor decrease to an average low of 80.6°F (27°C).Heat index
The average heat index in January is evaluated at a hot 87.8°F (31°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.The standards for the heat index are set for locations in shade and under light breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
January, March through May, October through December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Dededo, in January, during 21.3 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. In Dededo, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.Daylight
In Dededo, the average length of the day in January is 11h and 26min.On the first day of the month, sunrise is at 6:43 am and sunset at 6:04 pm. On the last day of January, in Dededo, sunrise is at 6:47 am and sunset at 6:20 pm ChST.
Sunshine
The average sunshine in January in Dededo, Guam, is 7.6h.UV index
January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Dededo. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during January translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What are January temperatures in Dededo?
What is the most humid month in Dededo?
What is the average humidity in January in Dededo?
How many days does it rain in January in Dededo?
What is the average length of the day in January in Dededo?
When are sunrise and sunset in January in Dededo?
How long on average sun shines in January in Dededo?
When is the highest UV index in Dededo?
What is the UV index intensity in January in Dededo?
Average temperature in January
Dededo, GU
- Average high temperature in January: 82°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 January: 80.6°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).
Average pressure in January
Dededo, GU
- Average pressure in January: 29.86"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).
Average wind speed in January
Dededo, GU
- Average wind speed in January: 15.8mph
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).
Average humidity in January
Dededo, GU
- Average humidity in January: 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%).
Average rainfall in January
Dededo, GU
- Average rainfall in January: 2.83"
The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").
Average rainfall days in January
Dededo, GU
- Average rainfall days in January: 21.3 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).
Average daylight in January /
Average sunshine in January
Dededo, GU
- Average daylight in January: 11h and 2min
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 January: 7h and 4min
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).
Average sunshine days in January
Dededo, GU
- Average sunshine days in January: 5.4 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).
Average UV index in January
Dededo, GU
- Average UV index in January: 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).
Average cloud cover in January
Dededo, GU
- Average cloud cover in January: 46
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).
Average visibility in January
Dededo, GU
- Average visibility in January: 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).
Dededo, Guam, USA
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