January weather forecastWaimalu, HI

January

Weather in January

January in Waimalu, Hawaii, features a perfect blend of humidity and shower, synchronizing a punch of pleasant tropical climate. This period displays the lowest rainfall of the year, marked at 1.1" (28mm) along with approximately 13.5 days of rain, offering a desirable relief to the locals. Post rainfall, the city gleams under sunlight for about 11 hours a day, coupled with a warm sea at 75°F (23.9°C) impelling the locals and tourists to enjoy various beach-side activities. Notably, the wind speed escalates to 8.9mph (14.3km/h), ushering in a refreshing breeze across the city. January exhibits its unique charm in Waimalu, with favorable weather encompassing warmth and dry spells throughout the month.

Temperature

The start of January sees the average high-temperature at a still moderately hot 75.7°F (24.3°C), showing little difference from December's 76.5°F (24.7°C). January nights reveal a minor deviation from daytime highs, with a mean low-temperature of 69.1°F (20.6°C).

Humidity

In Waimalu, the average relative humidity in January is 75%.

Rainfall

In Waimalu, in January, during 13.5 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 208.4 rainfall days, and 16.5" (419mm) of precipitation is accumulated.

Ocean temperature

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater in Waimalu.
Note: People sensitive to cold might find swimming in 75.2°F (24°C) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.

Daylight

The average length of the day in January is 11h and 1min.
On the first day of the month, sunrise is at 7:09 am and sunset at 6:01 pm. On the last day of January, sunrise is at 7:09 am and sunset at 6:20 pm HST.

Sunshine

In January, the average sunshine is 8.2h.

UV index

The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in January transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be mindful! Sand and water reflections can up the Sun's UV exposure.

Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in January, in Waimalu, records 75.7°F (24.3°C), while the low-temperature is 69.1°F (20.6°C).

In Waimalu, Hawaii, the average relative humidity in January is 75%.

In Waimalu, during January, the rain falls for 13.5 days and regularly aggregates up to 1.1" (28mm) of precipitation.

The months with the coldest seawater are January through April, with an average ocean temperature of 75.2°F (24°C).

In Waimalu, the average seawater temperature in January is 75.2°F (24°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.2°F (24°C) water may be enjoyable.

The average day length in January is 11h and 1min.

On the first day of January, sunrise is at 7:09 am and sunset at 6:01 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:20 pm HST.

In Waimalu, the average sunshine duration in January is 8.2h.

January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index.

In Waimalu, the average daily maximum UV index in January is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

76.5°F

75.7°F

75.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.7mph

8.9mph

9.9mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

13.5

15.8

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

9.2

12.3

8.3

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Waimalu, HI

Average high temperature in January: 75.7°F

The warmest months (with the highest average high temperature) are August and September (82°F).
The months with the lowest average high temperature are February and March (75.4°F).

Average low temperature in January: 69.1°F

The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).

Average pressure in January
Waimalu, 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
Waimalu, HI

Average wind speed in January: 8.4mph

The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).

Average humidity in January
Waimalu, 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 April, May, June and September (74%).

Average rainfall in January
Waimalu, HI

Average rainfall in January: 1.1"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").

Average rainfall days in January
Waimalu, HI

Average rainfall days in January: 13.5 days

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).

Average sea temperature in January
Waimalu, HI

Average sea temperature in January: 75°F

The best months for swimming (with the highest average sea temperature) are August, September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

Average daylight in January /
Average sunshine in January
Waimalu, 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 12min

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).

Average sunshine days in January
Waimalu, HI

Average sunshine days in January: 12.3 days

The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).

Average UV index in January
Waimalu, HI

Average UV index in January: 6

The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).

Average cloud cover in January
Waimalu, HI

Average cloud cover in January: 36

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).

Average visibility in January
Waimalu, 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).