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 marks a slight shift to an average high-temperature of a still moderately hot 75.9°F (24.4°C) from December's 76.6°F (24.8°C). An average low-temperature of 70°F (21.1°C), slightly less than the daytime peak, marks the month of January.Humidity
The average relative humidity in January is 75%.Rainfall
In Waialua, during January, the rain falls for 12.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Waialua, during the entire year, the rain falls for 190.2 days and collects up to 11.65" (296mm) of precipitation.Ocean temperature
In Waialua, the average seawater temperature in January is 76.6°F (24.8°C).Note: Imagine a swim in 76.6°F (24.8°C) waters. How you'd feel depends on your cold sensitivity, the sun's rays, the caress of the wind, and the warmth enveloping you. Comparatively, Olympic swimmers train in waters between 77°F (25°C) and 82.4°F (28°C).
Daylight
In January, the average length of the day is 11h and 0min.On the first day of the month, sunrise is at 7:10 am and sunset at 6:01 pm. On the last day of January, in Waialua, Hawaii, sunrise is at 7:10 am and sunset at 6:21 pm HST.
Sunshine
The average sunshine in January is 8.2h.UV index
The months with the lowest UV index are January through June, August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 6 during January morphs into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Frequently asked questions
What are January temperatures in Waialua?
What is the average humidity in January in Waialua?
How many days does it rain in January in Waialua?
How warm is the water in January in Waialua?
How many hours of daylight does Waialua have in January?
When are sunrise and sunset in January in Waialua?
How many hours of sunshine does Waialua have in January?
What are the months with the lowest UV index in Waialua?
What is the UV index intensity in January in Waialua?
Average temperature in January
Waialua, HI
- Average high temperature in January: 75.9°F
The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in January: 70°F
The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in January
Waialua, HI
- Average pressure in January: 30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in January
Waialua, HI
- Average wind speed in January: 9mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in January
Waialua, HI
- Average humidity in January: 75%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are May and September (74%).
Average rainfall in January
Waialua, HI
- Average rainfall in January: 0.79"
The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in January
Waialua, HI
- Average rainfall days in January: 12.5 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in January
Waialua, HI
- Average sea temperature in January: 76.6°F
The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (75.2°F).
Average daylight in January /
Average sunshine in January
Waialua, HI
- Average daylight in January: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in January: 8h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in January
Waialua, HI
- Average sunshine days in January: 12.9 days
The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in January
Waialua, HI
- Average UV index in January: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in January
Waialua, HI
- Average cloud cover in January: 37
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are January and September (Cloud cover 37).
Average visibility in January
Waialua, HI
- 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).
Waialua, Hawaii, USA
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