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 sea temperature 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
The arrival of January brings an average high-temperature of a still warm 82°F (27.8°C), subtly diverging from December's 83.5°F (28.6°C). Merizo's nighttime temperatures in January reveal a minimal variation from the daytime highs, averaging at a still warm 80.6°F (27°C).Heat index
The heat index for January is evaluated at a hot 87.8°F (31°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
January, March through May, October through December, with an average relative humidity of 78%, are the most humid months.Rainfall
In January, in Merizo, the rain falls for 21.3 days. Throughout January, 2.83" (72mm) of precipitation is accumulated. Throughout the year, in Merizo, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.Ocean temperature
In Merizo, the average seawater temperature in January is 82.9°F (28.3°C).Note: With water temperature from 77°F (25°C) to 84.2°F (29°C), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.
Daylight
In Merizo, the average length of the day in January is 11h and 26min.On the first day of January, sunrise is at 6:43 am and sunset at 6:05 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:21 pm ChST.
Sunshine
The average sunshine in January 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. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 7 during January translates into the following guidance:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. 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. Note! Reflective surfaces like sand and water heighten the UV radiation levels.
Frequently asked questions
What is the temperature in January in Merizo?
What are the most humid months in Merizo?
What is the average humidity in January in Merizo?
How many days does it rain in January in Merizo?
What is the ocean temperature in January in Merizo?
What is the average length of the day in January in Merizo?
When are sunrise and sunset in January in Merizo?
How many hours of sunshine does Merizo have in January?
When is the highest UV index in Merizo?
What is the UV index reading in January in Merizo?
Average temperature in January
Merizo, 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
Merizo, 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
Merizo, 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
Merizo, 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
Merizo, 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
Merizo, 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 sea temperature in January
Merizo, GU
- Average sea temperature in January: 82.9°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).
Average daylight in January /
Average sunshine in January
Merizo, 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 24min).
- 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
Merizo, 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
Merizo, 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
Merizo, 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
Merizo, 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).
Merizo, Guam, USA
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