May weather forecast
Nānākuli, HI

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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). The city gracefully bridges the gap between April and June, presenting a great blend of consistency and mild transformation.

Temperature

In Nānākuli, May's average high-temperature stands at a still moderately hot 78.6°F (25.9°C), closely related to the preceding month. Night temperatures during May in Nānākuli, Hawaii, stabilize at an average of 72.7°F (22.6°C), closely mirroring the daytime temperatures.

Humidity

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

Rainfall

In Nānākuli, during May, the rain falls for 17.1 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 196.3 rainfall days, and 14.72" (374mm) of precipitation is accumulated.

Ocean temperature

In Nānākuli, the average seawater temperature in May is 78.3°F (25.7°C).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 77°F (25°C) to 84.2°F (29°C) is very pleasurable for extended periods, without any discomfort.

Daylight

The average length of the day in May is 13h and 10min.
On the first day of the month, sunrise is at 6:00 am and sunset at 6:58 pm. On the last day of May, in Nānākuli, sunrise is at 5:49 am and sunset at 7:11 pm HST.

Sunshine

In Nānākuli, Hawaii, the average sunshine in May is 10.3h.

UV index

January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Nānākuli. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 during May translates into the following directions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
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Frequently asked questions

What is the temperature in May in Nānākuli?

An average high-temperature, in May, in Nānākuli, is 78.6°F (25.9°C) and the average low-temperature is 72.7°F (22.6°C).

What are the least humid months in Nānākuli?

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

What is the average humidity in May in Nānākuli?

In May, the average relative humidity is 74%.

How many days does it rain in May in Nānākuli?

In May, in Nānākuli, Hawaii, the rain falls for 17.1 days. Throughout May, 1.22" (31mm) of precipitation is accumulated.

How warm is the water in May in Nānākuli?

In Nānākuli, Hawaii, in May, the average water temperature is 78.3°F (25.7°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Nānākuli have in May?

The average day length in May is 13h and 10min.

When is the sunrise / sunset in May in Nānākuli?

On the first day of May in Nānākuli, sunrise is at 6:00 am and sunset at 6:58 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:11 pm HST.

How long on average sun shines in May in Nānākuli?

In Nānākuli, the average sunshine duration in May is 10.3h.

When is the lowest UV index in Nānākuli?

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

What is the UV index intensity in May in Nānākuli?

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Nānākuli, HI

Average temperature in May - Nānākuli, HI
  • Average high temperature in May: 78.6°F

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).

  • Average low temperature in May: 72.7°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 in May
Nānākuli, HI

Average pressure in May - Nānākuli, HI
  • Average pressure in May: 30.04"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).

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Average wind speed in May
Nānākuli, HI

Average wind speed in May - Nānākuli, HI
  • Average wind speed in May: 9.3mph

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 in May
Nānākuli, HI

Average humidity in May - Nānākuli, HI
  • Average humidity in May: 74%

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 in May
Nānākuli, HI

Average rainfall in May - Nānākuli, HI
  • Average rainfall in May: 1.22"

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 in May
Nānākuli, HI

Average rainfall days in May - Nānākuli, HI
  • Average rainfall days in May: 17.1 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).

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Average sea temperature in May
Nānākuli, HI

Average sea temperature in May - Nānākuli, HI
  • Average sea temperature in May: 78.2°F

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 in May /
Average sunshine in May
Nānākuli, HI

Average daylight in May / Average sunshine in May - Nānākuli, HI
  • Average daylight in May: 13h and 1min

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 May: 10h and 2min

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 in May
Nānākuli, HI

Average sunshine days in May - Nānākuli, HI
  • Average sunshine days in May: 9.8 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).

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Average UV index in May
Nānākuli, HI

Average UV index in May - Nānākuli, HI
  • Average UV index in May: 6

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 cloud cover in May
Nānākuli, HI

Average cloud cover in May - Nānākuli, HI
  • Average cloud cover in May: 33

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).

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Average visibility in May
Nānākuli, HI

Average visibility in May - Nānākuli, HI
  • Average visibility in May: 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).

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Nānākuli, Hawaii, USA

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