Climate and monthly weather forecastNānākuli, HI
Climate and monthly weather forecast
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
November, the last month of the autumn in Nānākuli, is warm month, with temperature in the range of an average low of 73.6°F (23.1°C) and an average high of 79°F (26.1°C). The arrival of November brings an average high-temperature of a still moderately hot 79°F (26.1°C), closely following the temperature pattern of October. 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 »Updated: Aug 20, 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
The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.
Throughout the year, there are 196.3 rainfall days, and 14.72" (374mm) of precipitation is accumulated.
January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Nānākuli, Hawaii.
In Nānākuli, February is the month with the lowest recorded average temperatures, measuring a high of 75°F (23.9°C) and a low of 69.1°F (20.6°C).
The month with the most rainfall is March, when the rain falls for 17.7 days and typically aggregates up to 1.81" (46mm) of precipitation.
March is the month with the coldest seawater, with an average ocean temperature of 75.7°F (24.3°C).
June has the longest days of the year, with an average of 13h and 24min of daylight.
With an average of 10.8h of sunshine, June has the most sunshine of the year.
The months with the highest UV index are June through September, with an average maximum UV index of 7.
The month with the least rainfall is July, when the rain falls for 15.5 days and typically collects 0.67" (17mm) of precipitation.
In Nānākuli, the months of August and September register the average highest temperatures, peaking at 81.7°F (27.6°C).
With an average ocean temperature of 80.6°F (27°C), September is the month with the warmest seawater.
With an average of 6.6h of sunshine, November has the least sunshine of the year.
December is the most humid month, with an average relative humidity of 76%.
December has the shortest days of the year, with an average of 10h and 54min of daylight.
Nānākuli does not observe Daylight Saving Time (DST). HST timezone is used throughout the entire year.
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).
Average pressure
Nānākuli, 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"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
Nānākuli, HI
- Average wind speed in January:
8.9mph - Average wind speed in February:
10mph - Average wind speed in March:
11mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.3mph - Average wind speed in June:
11.4mph
- Average wind speed in July:
11.6mph - Average wind speed in August:
10.9mph - Average wind speed in September:
9.6mph - Average wind speed in October:
8.8mph - Average wind speed in November:
10.7mph - Average wind speed in December:
9.7mph
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).
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%).
Average rainfall
Nānākuli, HI
- Average rainfall in January:
0.98" - Average rainfall in February:
1.54" - Average rainfall in March:
1.81" - Average rainfall in April:
1.1" - Average rainfall in May:
1.22" - Average rainfall in June:
0.98"
- Average rainfall in July:
0.67" - Average rainfall in August:
0.94" - Average rainfall in September:
1.26" - Average rainfall in October:
1.69" - Average rainfall in November:
1.06" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is March (1.81").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days
Nānākuli, HI
- Average rainfall days in January:
13.8 days - Average rainfall days in February:
15.5 days - Average rainfall days in March:
17.7 days - Average rainfall days in April:
18.3 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
16 days - Average rainfall days in September:
18.9 days - Average rainfall days in October:
17.6 days - Average rainfall days in November:
15.3 days - Average rainfall days in December:
15.5 days
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).
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).
Average daylight / Average sunshine
Nānākuli, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 42min - Average daylight in May:
13h and 12min - Average daylight in June:
13h and 24min
- Average daylight in July:
13h and 18min - Average daylight in August:
12h and 48min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
11h and 6min - Average daylight in December:
10h and 54min
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 36min - Average sunshine in February:
8h and 12min - Average sunshine in March:
8h and 12min - Average sunshine in April:
8h and 24min - Average sunshine in May:
10h and 18min - Average sunshine in June:
10h and 48min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 0min - Average sunshine in September:
9h and 6min - Average sunshine in October:
8h and 24min - Average sunshine in November:
6h and 36min - Average sunshine in December:
6h and 42min
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).
Average sunshine days
Nānākuli, HI
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
8.8 days - Average sunshine days in March:
7.5 days - Average sunshine days in April:
6.8 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
9.6 days - Average sunshine days in August:
9 days - Average sunshine days in September:
6.6 days - Average sunshine days in October:
6.5 days - Average sunshine days in November:
6.4 days - Average sunshine days in December:
8.8 days
The month with the most sunshine days is January (11.8 days).
The month with the least sunshine days is November (6.4 days).
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).
Average cloud cover
Nānākuli, HI
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are January and September (Cloud cover 32).
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).
