January weather forecastLahaina, HI
January
Weather in January
January tends to lay the foundation for the year's weather pattern in Lahaina, Hawaii. Mild temperatures typically persist with occasional short spells of rainfall, a theme that recurs throughout the year. A slight rise in the relative humidity often accompanies these occasional showers. Wind speeds are noteworthy, averaging 10.6mph (17.1km/h), with peak gusts reaching 14.5mph (23.3km/h). Lahaina's January weather is a perfect haven for consistency seekers.Temperature
The arrival of January in Lahaina marks a slight shift to an average high-temperature of a still warm 74.8°F (23.8°C) from December's 75.4°F (24.1°C). The temperature during January nights demonstrates a small drop from the daytime highs, settling to an average of 71.6°F (22°C).Humidity
The months with the lowest humidity in Lahaina are January through March, September and November, with an average relative humidity of 75%.Rainfall
In Lahaina, in January, during 9.9 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, in Lahaina, there are 112.6 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Ocean temperature
In January, the average ocean temperature in Lahaina is 76.6°F (24.8°C).Note: Considering one's resistance to cold, elements like sunshine, wind, and the prevailing temperature matter when taking a swim in 76.6°F (24.8°C) waters. (For comparison, the Olympic swimming standard is set between 77°F (25°C) and 82.4°F (28°C).)
Daylight
The average length of the day in January is 11h and 2min.On the first day of the month, sunrise is at 7:03 am and sunset at 5:57 pm. On the last day of January, sunrise is at 7:03 am and sunset at 6:16 pm HST.
Sunshine
In Lahaina, the average sunshine in January is 8.3h.UV index
The months with the lowest UV index in Lahaina, Hawaii, are January through June, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 6 suggests these recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be attentive! The UV exposure is heightened with reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Lahaina, HI
- Average high temperature in January: 74.8°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in January: 71.6°F
The months with the highest average low temperature are August and October (76.5°F).
The coldest month (with the lowest average low temperature) is March (70.7°F).
Average pressure in January
Lahaina, HI
- Average pressure in January: 30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in January
Lahaina, HI
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.6mph).
Average humidity in January
Lahaina, HI
- Average humidity in January: 75%
The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January, February, March, September and November (75%).
Average rainfall in January
Lahaina, HI
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is March (1.1").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Lahaina, HI
- Average rainfall days in January: 9.9 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is November (7.7 days).
Average sea temperature in January
Lahaina, 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 (76°F).
Average daylight in January /
Average sunshine in January
Lahaina, 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 54min).
- Average sunshine in January: 8h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in January
Lahaina, HI
- Average sunshine days in January: 17.9 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is March (12.6 days).
Average UV index in January
Lahaina, HI
- Average UV index in January: 6
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in January
Lahaina, HI
- Average cloud cover in January: 26
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in January
Lahaina, 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).
