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Contents
- The climate of Waimalu
- The best time to visit Waimalu
- The worst time to visit Waimalu
- Spring weather in Waimalu
- Summer weather in Waimalu
- Autumn weather in Waimalu
- Winter weather in Waimalu
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Waimalu
Nestled in the heart of Hawaii, USA, the climatic conditions of Waimalu typify an As or tropical wet and dry climate under the Köppen climate classification. Herein, a marked 'summer' dry season balances the region's conventional tropical climate. Rolling through the calendar, Waimalu experiences a harmonic dance between elevated temperatures and bouts of rainfall.
A temperature examination reveals highs circling from 75.4°F (24.1°C) in February to 82°F (27.8°C) in August with the mercury drip falling to signal the lows between 68°F (20°C) in February to 75°F (23.9°C) in September. The relative humidity clings, more or less, to the 75% mark, creating a climate that’s mildly humid. Heated climate and the island's geographical position result in a relatively stable sea temperature throughout the year, with the water temperature ranging from a pleasant 75°F (23.9°C) in the early months to a warm 81°F (27.2°C) during August to October.
Rainfall paints a less consistent annual picture. January, February, and March experience rainfall from 1.1in to 1.93in, while rainfall from April to September hovers in the range of 1.22in to 1.02in. October sees a spike in the wet weather, with rainfall of 2.09in, followed by milder rainfall of 1.18in in November and 1.65in in December. Indeed, Waimalu doesn't shy away from its tropical nature.
A temperature examination reveals highs circling from 75.4°F (24.1°C) in February to 82°F (27.8°C) in August with the mercury drip falling to signal the lows between 68°F (20°C) in February to 75°F (23.9°C) in September. The relative humidity clings, more or less, to the 75% mark, creating a climate that’s mildly humid. Heated climate and the island's geographical position result in a relatively stable sea temperature throughout the year, with the water temperature ranging from a pleasant 75°F (23.9°C) in the early months to a warm 81°F (27.2°C) during August to October.
Rainfall paints a less consistent annual picture. January, February, and March experience rainfall from 1.1in to 1.93in, while rainfall from April to September hovers in the range of 1.22in to 1.02in. October sees a spike in the wet weather, with rainfall of 2.09in, followed by milder rainfall of 1.18in in November and 1.65in in December. Indeed, Waimalu doesn't shy away from its tropical nature.
The best time to visit Waimalu
If turquoise waters and sunlit days top the travel list, it's worth noting that June, July, and August offer the most sunshine, boasting 9.9 hours and 9.3 hours and impressive sea temperatures hovering around 81°F (27.2°C). Rainfall during these months is also at its annual low, with June seeing just 1.06in of rain. Naturally, these are also the warmest months of the year, with temperatures climbing to 81.1°F (27.3°C) in July and to 82°F (27.8°C) in August, making this period ideal for beach or outdoor activities.
The worst time to visit Waimalu
On the flip side, the weather conditions from February to April might not lend themselves as favorably to those eager to avoid rainfall and embrace abundant sunlight. These months see rainfall quantities climb from 1.61in in February to 1.93in in March, and daily sunshine averages dropping, with only 7.5 hours registered in March. Moreover, these months also report lower sea temperatures, down to 75°F (23.9°C), which may deter those looking to indulge in water-based activities.
Spring weather in Waimalu
The arrival of Spring in Waimalu, typically from March to May, does not deviate dramatically from the overall tropical nature of the region. During this time, temperatures rest between a comforting 70.7°F (21.5°C) and 72.1°F (22.3°C) while high temperatures rise steadily from 75.4°F (24.1°C) to 78.6°F (25.9°C). Rainfall stands at 1.93in in March and later eases to 1.22in in April and 1.46in in May while daylight graces the region for around 12 to 13.2 hours daily.
Summer weather in Waimalu
Waimalu’s summer, extending from June to August, unveils the warmest weather of the year. High temperatures ascend from 79.7°F (26.5°C) in June to a peak of 82°F (27.8°C) in August. However, the cooling sea offers a welcome respite, maintaining a constant temperature of 81°F (27.2°C). Rainfall decreases significantly over these months, hitting its yearly low of 0.71in in July and averaging 1.02in in August.
Autumn weather in Waimalu
Moving into Autumn, from September to November, Waimalu observes a slight fall in temperatures, with lows nearing 73.2°F (22.9°C) in November and highs dropping to about 79°F (26.1°C). The sea temperature remains at a consistent 81°F (27.2°C) until October before dropping lightly to 79°F (26.1°C). Rainfall sees an uptick, culminating in 2.09in in October.
Winter weather in Waimalu
In Winter, from December to February, Waimalu's temperature ranges lightly, with lows hovering around 69.1°F (20.6°C) to 70.5°F (21.4°C) and high temperatures sliding from 76.5°F (24.7°C) in December to 75.4°F (24.1°C) in February. Rainfall is moderate but visible at 1.65in in December, dropping to 1.1in in January and elevating to 1.61in in February. The sea temperature decreases to a still comfortable 77°F (25°C) in December and maintains this through to February.
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. Weather in January »
Weather in February
In February, Waimalu gains 0.5 more hours of daylight compared to January, yet enjoys an almost similar temperature range. Residing in the heart of Hawaii, Waimalu acts as a perennial vacation spot with a sea temperature of 75°F (23.9°C), despite the slight increase in rainfall. Weather in February »
Weather in March
March in Waimalu witnesses a surge in rainfall to 1.93" (49mm), yet manages to retain its balmy demeanor. The city witnesses a subtle uptick in the daily temperature, combined with 12 hours of daylight. The increased amount of sun exposure allows residents to revel under clear skies despite the ephemeral showers, coloring the city with vibrancy. Weather in March »
Weather in April
April carries forward the essence of the Hawaiian climate to Waimalu, boasting of a subtle dip in the rainfall to 1.22" (31mm). This period encounters escalating average temperatures that blend aptly with the city's relaxed coastal vibe. Weather in April »
Weather in May
May is an idyllic time in Waimalu, with the weather exhibiting a combination of mildly warm temperatures and moderate rainfall. The city enjoys its peak daylight time of 13.2 hours, ensuring an affluent amount of Vitamin D for the inhabitants. Weather in May »
Weather in June
June amplifies the Hawaiian summer vibe in Waimalu with a marginal increase in temperature. Among the key features of this month are its mostly sunny and clear skies, inviting residents to partake in various outdoor activities. Despite the rise in temperature, June observes a significant dip in rainfall to just 1.06" (27mm), maintaining an appropriate humectant counterbalance. Weather in June »
Weather in July
July in Waimalu is noted for its tropical summer luster with consistent temperature readings. Despite the steady heat, life in this Hawaiian city is remarkably pleasant due to the moderated wind and relative humidity. Intermittent rains escort an invigorating burst of freshness while the daylight of 13.3 hours ensures adequate sun exposure for residents. Weather in July »
Weather in August
August in Waimalu is often labeled as a month synonymous with mildly humid summer weather. The city experiences a modicum of heat with minimal fluctuations in daylight and sea temperature. Despite the slightly increased rainfall, August remains a comfortable month, also denoting a dip in wind speed to a significant 11.1mph (17.9km/h). Weather in August »
Weather in September
September marks the end of summer in Waimalu, characterized by a stable temperature, tapering daylight hours, and a sea at a constant 81°F (27.2°C). Weather realigns itself with a rise in rainfall while the city continues to benefit from sunshine for 8.4 hours per day. Weather in September »
Weather in October
October in Waimalu exhibits the onset of fall, accompanied by a gradual decrease in temperature. Distinct weather features include the receding daylight hours and consistent sea temperature, which pleases both locals and tourists. Weather in October »
Weather in November
The pleasant weather of November adds grace to the city life of Waimalu, Hawaii. As fall sets in, the city observes a minor drop in temperature, balanced by the sea temperature and daylight hours seen in October. This month doesn't reserve any surprises in terms of wind speeds as they drop slightly to 10.2mph (16.4km/h), sustaining the pleasantness throughout November. Weather in November »
Weather in December
December, the final month of the year, bestows Waimalu with a cool and temperate climate. As the temperature lowers around the holiday season, this Hawaiian city becomes a soothing retreat from the freezing temperatures of mainland America. Weather in December »
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How many days does it rain?
Throughout the year, there are 208.4 rainfall days, and 16.5" (419mm) of precipitation is accumulated.
What are the months with the coldest ocean?
The months with the coldest seawater are January through April, with an average ocean temperature of 75.2°F (24°C).
When is the lowest UV index?
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index.
What are the coldest months?
The lowest level of Waimalu's temperatures is noted during February and March, averaging a high-temperature of 75.4°F (24.1°C).
What are the most humid months?
February and December, with an average relative humidity of 76%, are most humid months.
What are the least humid months?
April through June and September, with an average relative humidity of 74%, are the least humid months.
When are the longest days?
With an average of 13h and 24min of daylight, June has the longest days of the year.
What month has the most sunshine?
With an average of 9.9h of sunshine, June has the most sunshine of the year.
What is the driest month in Waimalu?
The month with the least rainfall is July, when the rain falls for 16.4 days and typically collects 0.71" (18mm) of precipitation.
What are the warmest months?
Waimalu's temperature peaks during August and September, with an average high-temperature of 82°F (27.8°C).
What months are the ocean warmest?
The months with the warmest seawater are August through October, with an average ocean temperature of 80.6°F (27°C).
When is the highest UV index in Waimalu?
September is the month with the highest UV index, with an average maximum UV index of 7.
What is the wettest month?
October is the month with the most rainfall. Rain falls for 18.4 days and accumulates 2.09" (53mm) of precipitation.
What are the months with the least sunshine?
The months with the least sunshine are November and December, with an average of 6.3h of sunshine.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 10h and 54min of daylight.
Is there Daylight Saving Time (DST)?
Waimalu does not utilize Daylight Saving Time (DST). HST timezone is used throughout the entire year.
Average temperature
Waimalu, HI
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).
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
Waimalu, HI
- Average pressure in January:
30"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30"Hg - Average pressure in December:
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
Waimalu, HI
- Average wind speed in January:
8.4mph - Average wind speed in February:
9.4mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.4mph - Average wind speed in May:
9.1mph - Average wind speed in June:
11.1mph
- Average wind speed in July:
11.3mph - Average wind speed in August:
10.6mph - Average wind speed in September:
9.3mph - Average wind speed in October:
8.5mph - Average wind speed in November:
10.2mph - Average wind speed in December:
9.1mph
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
Waimalu, HI
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
Waimalu, HI
- Average rainfall in January:
1.1" - Average rainfall in February:
1.61" - Average rainfall in March:
1.93" - Average rainfall in April:
1.22" - Average rainfall in May:
1.46" - Average rainfall in June:
1.06"
- Average rainfall in July:
0.71" - Average rainfall in August:
1.02" - Average rainfall in September:
1.46" - Average rainfall in October:
2.09" - Average rainfall in November:
1.18" - Average rainfall in December:
1.65"
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
Waimalu, HI
- Average rainfall days in January:
13.5 days - Average rainfall days in February:
15.8 days - Average rainfall days in March:
20 days - Average rainfall days in April:
18.6 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
19.5 days - Average rainfall days in October:
18.4 days - Average rainfall days in November:
17.7 days - Average rainfall days in December:
17 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
Waimalu, HI
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 / Average sunshine
Waimalu, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 1min - Average daylight in June:
13h and 2min
- Average daylight in July:
13h and 2min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
10h and 5min
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 1min - Average sunshine in February:
7h and 4min - Average sunshine in March:
7h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
9h and 3min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
8h and 2min - Average sunshine in September:
8h and 2min - Average sunshine in October:
7h and 5min - Average sunshine in November:
6h and 2min - Average sunshine in December:
6h and 2min
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
Waimalu, HI
- Average sunshine days in January:
12.3 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
7.1 days - Average sunshine days in April:
7.7 days - Average sunshine days in May:
8.7 days - Average sunshine days in June:
9.9 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
8.7 days - Average sunshine days in September:
6.5 days - Average sunshine days in October:
6.3 days - Average sunshine days in November:
6.2 days - Average sunshine days in December:
9.2 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
Waimalu, HI
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
Waimalu, HI
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
Waimalu, HI
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).
Waimalu, Hawaii, USA
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