May weather forecast
Naalehu, HI

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Weather in May

Entering into May, Naalehu experiences a general uptrend in most weather parameters. The comparatively warmer temperatures settle in, with the mercury touching highs of 71.1°F (21.7°C). There's also a noticeable increase in daylight hours. Visitors and locals alike can bask in the extended sunshine and enjoy the balmy seaside breezes. Despite these shifts, the weather remains incredibly enjoyable and Naalehu continues to live up to its reputation as a year-round vacation destination.

Temperature

May's onset brings an average high-temperature of a still agreeable 71.1°F (21.7°C), showing a minute difference from April's 69.3°F (20.7°C). Naalehu observes a consistent average low-temperature of 66.7°F (19.3°C) throughout May nights.

Humidity

The average relative humidity in May is 80%.

Rainfall

In Naalehu, during May, the rain falls for 21.1 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Naalehu, during the entire year, the rain falls for 216.1 days and collects up to 16.57" (421mm) of precipitation.

Daylight

In Naalehu, the average length of the day in May is 13h and 2min.
On the first day of the month, sunrise is at 5:53 am and sunset at 6:44 pm. On the last day of May, sunrise is at 5:44 am and sunset at 6:56 pm HST.

Sunshine

The month with the most sunshine is May, with an average of 10.7h of sunshine.

UV index

May through October, with an average maximum UV index of 6, are months with the highest UV index in Naalehu, Hawaii. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 6 translates into these guidelines:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the average May temperature in Naalehu?

In Naalehu, in May, the average high-temperature is 71.1°F (21.7°C), and the average low-temperature is 66.7°F (19.3°C).

What is the average humidity in May in Naalehu?

In Naalehu, Hawaii, the average relative humidity in May is 80%.

How many days does it rain in May in Naalehu?

In May, the rain falls for 21.1 days. Throughout May, 1.42" (36mm) of precipitation is accumulated.

How many hours of daylight does Naalehu have in May?

The average day length in May in Naalehu is 13h and 2min.

When is the sunrise / sunset in May in Naalehu?

On the first day of May in Naalehu, sunrise is at 5:53 am and sunset at 6:44 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 6:56 pm HST.

What month has the most sunshine in Naalehu?

The month with the most sunshine in Naalehu is May, with an average of 10.7h of sunshine.

How many hours of sunshine does Naalehu have in May?

The average sunshine duration in May in Naalehu, Hawaii, is 10.7h.

What is the month with the highest UV index in Naalehu?

May through October, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in May in Naalehu?

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

Average temperature in May
Naalehu, HI

Average temperature in May - Naalehu, HI
  • Average high temperature in May: 71.1°F

The warmest months (with the highest average high temperature) are August and October (73.2°F).
The month with the lowest average high temperature is February (68.9°F).

  • Average low temperature in May: 66.7°F

The month with the highest average low temperature is October (70°F).
The coldest month (with the lowest average low temperature) is March (64.8°F).

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Average pressure in May
Naalehu, HI

Average pressure in May - Naalehu, HI
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).

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Average wind speed in May
Naalehu, HI

Average wind speed in May - Naalehu, HI
  • Average wind speed in May: 6.3mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).

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Average humidity in May
Naalehu, HI

Average humidity in May - Naalehu, HI
  • Average humidity in May: 80%

The months with the highest relative humidity are June, July, August and September (81%).
The month with the lowest relative humidity is February (73%).

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Average rainfall in May
Naalehu, HI

Average rainfall in May - Naalehu, HI
  • Average rainfall in May: 1.42"

The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in May
Naalehu, HI

Average rainfall days in May - Naalehu, HI
  • Average rainfall days in May: 21.1 days

The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is January (10.8 days).

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Average daylight in May /
Average sunshine in May
Naalehu, HI

Average daylight in May / Average sunshine in May - Naalehu, HI
  • Average daylight in May: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is May (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 7h and 18min).

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Average sunshine days in May
Naalehu, HI

Average sunshine days in May - Naalehu, HI
  • Average sunshine days in May: 3.2 days

The month with the most sunshine days is January (12.7 days).
The month with the least sunshine days is May (3.2 days).

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Average UV index in May
Naalehu, HI

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

The months with the highest UV index are May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 5).

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Average cloud cover in May
Naalehu, HI

Average cloud cover in May - Naalehu, HI
  • Average cloud cover in May: 29

The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is January (Cloud cover 15).

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Average visibility in May
Naalehu, HI

Average visibility in May - Naalehu, 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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Naalehu, Hawaii, USA

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