Climate and monthly weather forecast
Nānākuli, HI

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The climate of Nānākuli

Residing on the island of Hawaii, Nānākuli experiences a As climate, as described by the Köppen climate classification system. This tropical wet and dry climate brings about a 'summer' dry season, i.e., a period of rainfall deficiency. The speciality of this geographical situation accounts for a specific weather pattern which paints a distinctive profile of atmospheric conditions throughout the year.

Exploring the temperatures reveals a moderate range between highs and lows. The highest average temperatures peak at 81.7°F (27.6°C) in both August and September, while the coolest ones dip to 69.1°F (20.6°C) in February. The sea temperatures intriguingly keep pace with climatic temperatures, the highest being 80.6°F (27°C) in September and the lowest at 75.7°F (24.3°C) between February and March.

Rainfall displays a remarkable consistency with respect to frequency and volume. Rainfall amount fluctuates from 0.67" (17mm) in July to 1.81" (46mm) in March, while the number of rainy days varies from 13.8 days in January to 18.9 days in September. What's also noteworthy is the relative humidity which stays consistent between 74% and 76% through the year. When it comes to wind speed, the patterns observe an annual fluctuation from 8.8mph (14.2km/h) in November to 11.6mph (18.7km/h) in July.

Moreover, sunlight duration and sunshine hours expose interesting variations. The longest daylight is observed in June at 13.4 hours, while the shortest daylight in December at 10.8 hours. Correspondingly, sunshine hours reach a peak of 10.8 hours in June and reduce to a minimum of 6.6 hours in November.

The best time to visit Nānākuli

Tourists seeking bright sunshine might find June appealing as it bears the longest amount of daylight at 13.4 hours, accompanied by maximum sunshine hours at 10.8 hours. In terms of comfortable temperatures, March to May provides a balance with temperatures circling between 75°F (23.9°C) and 78.6°F (25.9°C) while sea temperatures maintain a correspondingly soothing range from 75.7degrees°F to 76.1°F (24.5°C).

The worst time to visit Nānākuli

November seems to be the least favourable month for a visit given its shortest sunshine duration of 6.6 hours per day. Besides, this period also witnesses temperatures cooling down to 73.6°F (23.1°C) and sea temperature dropping to 78.7°F (25.9°C).

Spring weather in Nānākuli

Spring in Nānākuli, ranging from March to May, is a time of moderate temperatures which varies from 75°F (23.9°C) to 78.6°F (25.9°C). This season experiences dwindle in daylight hours from 13.2 hours in May to 11.5 hours in March. It's also the duration with a remarkable decline in average rainfall from 1.81" (46mm) to 1.22" (31mm) while humid conditions continue to prevail with relative humidity around 74%.

Summer weather in Nānākuli

June ushers in the Summer, which runs until August, with temperatures increasing from 79.7°F (26.5°C) to 81.7°F (27.6°C). The summer season basks in the glory of the longest daylight hours with June boasting 13.4 hours of sunlight. However, rainfall is quite scarce, especially in July, which witnesses the lowest rainfall of 0.67" (17mm).

Autumn weather in Nānākuli

Autumn, from September to November, witnesses temperatures falling gradually from 81.7°F (27.6°C) to 73.6°F (23.1°C). This season experiences a rise in rainfall, peaking in October with 1.69" (43mm). In fact, September records the highest count of wet days at 18.9. Daylight hours and sunshine duration decline progressively throughout autumn.

Winter weather in Nānākuli

December embarks the Winter which extends till February. The average temperatures scale down to between 69.1°F (20.6°C) and 70.2°F (21.2°C), marking it as the coolest quarter of the year. Rainfall during these months stays consistent, with the volume varying between 1.46" (37mm) and 0.98" (25mm). In spite of shorter daylight and sunshine hours, the relative humidity remains quite steady, oscillating around 75%.

Weather in January

The weather in Nānākuli starts the year on a mild note, as the region enters the year with comfortable weather conditions. A shift isn't felt between December and January, allowing for steady temperatures and a pleasant start. Weather in January »

Weather in February

As the second month of the year rolls around, Nānākuli greets February with slightly increased weather activity. The variation between temperature ranges persists, without a drastic deviation from January's figures. The smallest temperature range is seen with lows at 69.1°F (20.6°C) and highs at 75°F (23.9°C). Weather in February »

Weather in March

The weather in Nānākuli changes subtly as March unveils itself. A careful blend of stability and dynamism marks the transition from February to March, making it noticeable yet pleasantly surprising. An increased number of rainfall days is observed with a total of 17.7 days. Weather in March »

Weather in April

The arrival of April witnesses a slight shift in Nānākuli's weather pattern. A soft transition in terms of temperature occurs, while other elements maintain a constant trend. The element that stands out the most is the amount of rainfall, which is recorded to be 1.1in. Weather in April »

Weather in May

May signals a subtle change in Nānākuli's weather, with the city showing signs of a warming trend. The steadiness of weather widens giving the start to a moderately active period. The distinct feature of this month is the temperature of sea water which rises to 78.2°F (25.7°C). Weather in May »

Weather in June

June in Nānākuli experiences the amalgamation of previous weather patterns merging with the onset of a warmer period of the year. The shift detects an increase in sun hours and a rise in sea water temperature. The wind speed of 11.4mph (18.3km/h) brings on an enriched wind experience, giving a delightful feel to the month. Weather in June »

Weather in July

The weather in July in Nānākuli, Hawaii, elevates further, introducing the city to the peak of the summer season. Month of July witnesses more sunshine, wind and less rainfall. Noteworthy is the UV index, which peaks at 7 for the year. Weather in July »

Weather in August

August introduces minor alterations to the continuing weather pattern in Nānākuli. A slight decrease in overall temperature can be observed, although it still persistently stays on the higher side. Winds reach their maximum speed for the year at 15.3mph (24.6km/h), providing a fresh breath of air during the heat. Weather in August »

Weather in September

September in Nānākuli brings with it, changes reminiscent of a farewell to the summer. It presents an increased level of rainfall, observing a recorded rainfall of 1.26in. The tendencies of change are persistent, as the city transitions into cooler months. Weather in September »

Weather in October

October in Nānākuli ushers in the autumn season, marking a visible change in the overall weather pattern. The changes happen subtly, with a significant reduction in daylight hours. Alongside, a striking feature is the increased amount of rainfall recorded, hitting 1.69 in for the month. Weather in October »

Weather in November

The last month of the autumn, November, is also a moderately hot month in Nānākuli, Hawaii, with an average temperature varying between 73.6°F (23.1°C) and 79°F (26.1°C). The unfolding of November shows an average high-temperature of a still moderately hot 79°F (26.1°C), indicating a slight variance from October's 81.1°F (27.3°C). Weather in November »

Weather in December

The weather in December in Nānākuli witnesses the staggering transformation from warm to colder months. The transition is gradual yet significant enough to be noticed by every resident. Rolling in with a drop in temperature, the lowest for the year at 71.8°F (22.1°C), December marks the beginning of the decline in temperature. Weather in December »
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Frequently asked questions

What is the least humid month in Nānākuli?

January, April through June, August through November, with an average relative humidity of 74%, are the least humid months.

How many days does it rain in Nānākuli?

In Nānākuli, Hawaii, during the entire year, the rain falls for 196.3 days and collects up to 14.72" (374mm) of precipitation.

What is the month with the lowest UV index in Nānākuli?

The months with the lowest UV index in Nānākuli are January through May, October through December, with an average maximum UV index of 6.

What month is the coldest in Nānākuli?

February is the month when Nānākuli, Hawaii, sees the average lowest temperatures, with a high of 75°F (23.9°C) and a low of 69.1°F (20.6°C).

What is the rainiest month in Nānākuli?

The month with the most rainfall in Nānākuli is March, when the rain falls for 17.7 days and typically aggregates up to 1.81" (46mm) of precipitation.

What month is the ocean coldest in Nānākuli?

With an average ocean temperature of 75.7°F (24.3°C), March is the month with the coldest seawater.

When are the longest days in Nānākuli?

The month with the longest days in Nānākuli, Hawaii, is June, with an average of 13h and 24min of daylight.

What month has the most sunshine in Nānākuli?

With an average of 10.8h of sunshine, June has the most sunshine of the year.

When is the highest UV index in Nānākuli?

The months with the highest UV index are June through September, with an average maximum UV index of 7.

What is the driest month in Nānākuli?

July is the month with the least rainfall. Rain falls for 15.5 days and accumulates 0.67" (17mm) of precipitation.

What part of the year is the hottest in Nānākuli?

Warmest months are August and September, with an average high-temperature of 81.7°F (27.6°C).

What is the month with the warmest ocean in Nānākuli?

September is the month with the warmest seawater, with an average ocean temperature of 80.6°F (27°C).

What is the month with the least sunshine in Nānākuli?

November has the least sunshine of the year, with an average of 6.6h of sunshine.

What is the most humid month in Nānākuli?

December is the most humid month in Nānākuli, Hawaii, with an average relative humidity of 76%.

What is the month with the shortest days in Nānākuli?

With an average of 10h and 54min of daylight, December has the shortest days of the year in Nānākuli.

Is there Daylight Saving Time (DST) in Nānākuli?

Nānākuli, Hawaii, does not utilize Daylight Saving Time (DST). HST timezone is used throughout the entire year.

Average temperature
Nānākuli, HI

Average temperature - Nānākuli, HI

The warmest months (with the highest average high temperature) are August and September (81.7°F).
The month with the lowest average high temperature is February (75°F).

The months with the highest average low temperature are August and September (75.9°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).

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Average pressure
Nānākuli, HI

Average pressure - Nānākuli, HI

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).

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Average wind speed
Nānākuli, HI

Average wind speed - Nānākuli, HI

The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is October (8.8mph).

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Average humidity
Nānākuli, HI

Average humidity - Nānākuli, HI

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).

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Average rainfall
Nānākuli, HI

Average rainfall - Nānākuli, HI

The wettest month (with the highest rainfall) is March (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days
Nānākuli, HI

Average rainfall days - Nānākuli, HI

The month with the highest number of rainy days is September (18.9 days).
The month with the least rainy days is January (13.8 days).

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Average sea temperature
Nānākuli, HI

Average sea temperature - Nānākuli, HI

The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

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Average daylight / Average sunshine
Nānākuli, HI

Average daylight / Average sunshine - Nānākuli, HI

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).

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

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Average sunshine days
Nānākuli, HI

Average sunshine days - Nānākuli, HI

The month with the most sunshine days is January (11.8 days).
The month with the least sunshine days is November (6.4 days).

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Average UV index
Nānākuli, HI

Average UV index - Nānākuli, HI

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

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Average visibility
Nānākuli, HI

Average visibility - Nānākuli, 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).

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Nānākuli, Hawaii, USA

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