May weather forecast
Maunaloa, HI

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Weather in May

By May, Maunaloa enters a dryer phase as rainfall further lowers to 0.71" (18mm). The sun becomes more generous with its light, allowing for extensive daylight hours. The trade winds maintain a solid presence, adding a refreshing breeze to the warm sunbath. Changes in pressure remain negligible, resulting in steady weather conditions across the board. Night skies maintain their clarity, thanks to the moderate cloud cover that persists throughout the month.

Temperature

The transition into May is marked with an average high-temperature of a still moderately hot 77°F (25°C), showing an insignificant shift from April's 75.9°F (24.4°C). Maunaloa, in May, registers a nighttime average temperature of 74.3°F (23.5°C).

Humidity

April through August, with an average relative humidity of 76%, are the most humid months in Maunaloa.

Rainfall

In Maunaloa, in May, it is raining for 11.2 days, with typically 0.71" (18mm) of accumulated precipitation. In Maunaloa, during the entire year, the rain falls for 126.4 days and collects up to 9.84" (250mm) of precipitation.

Ocean temperature

In May, the average ocean temperature is 77°F (25°C).
Note: For any water activity, the surface water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are deemed excellent and incredibly pleasant for longer durations.

Daylight

The average length of the day in May in Maunaloa, Hawaii, is 13h and 9min.
On the first day of May, sunrise is at 5:57 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 7:06 pm HST.

Sunshine

The average sunshine in May in Maunaloa is 11.2h.

UV index

January through May, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in May converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be on guard! The reflective nature of sand and water boosts UV exposure.
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Frequently asked questions

What is the average May temperature in Maunaloa?

The high-temperature, in May, in Maunaloa, is 77°F (25°C), while the low-temperature averages to 74.3°F (23.5°C).

What are the most humid months in Maunaloa?

The months with the highest humidity in Maunaloa, Hawaii, are April through August, with an average relative humidity of 76%.

What is the average humidity in May in Maunaloa?

In May, the average relative humidity in Maunaloa, Hawaii, is 76%.

How much does it rain in Maunaloa in May?

In Maunaloa, in May, it is raining for 11.2 days, with typically 0.71" (18mm) of accumulated precipitation.

What is the ocean temperature in May in Maunaloa?

In Maunaloa, in May, the average water temperature is 77°F (25°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in May in Maunaloa?

The average day length in May in Maunaloa is 13h and 9min.

When are sunrise and sunset in May in Maunaloa?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 7:06 pm HST.

How many hours of sunshine does Maunaloa have in May?

The average sunshine duration in May in Maunaloa is 11.2h.

What are the months with the lowest UV index in Maunaloa?

The months with the lowest UV index in Maunaloa, Hawaii, are January through May, November and December, with an average maximum UV index of 6.

What is the UV index intensity in May in Maunaloa?

In Maunaloa, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
75.9°F 24.4°C
77°F 25°C
78.4°F 25.8°C
Average low temperature
72.7°F 22.6°C
74.3°F 23.5°C
75.6°F 24.2°C
Average pressure
30.05" 763mmHg
30.04" 763mmHg
30.03" 763mmHg
Average wind speed
12.4mph 20km/h
11.6mph 18.7km/h
13.5mph 21.7km/h
Average max. wind speed
12.9mph 20.8km/h
12.1mph 19.5km/h
14mph 22.5km/h
Average wind speed gusts
17.3mph 27.8km/h
16.1mph 25.9km/h
18.8mph 30.3km/h
Average humidity
76%
76%
76%
Average rainfall
0.83" 21mm
0.71" 18mm
0.67" 17mm
Average rainfall days
10.4
11.2
8.8
Average sea temperature
75°F 23.9°C
77°F 25°C
77°F 25°C
Average daylight
12h 4min
13h 1min
13h 2min
Average sunshine
9h 1min
11h 1min
11h 3min
Average sunshine days
12.6
13.3
15.7
Average UV index
6
6
7
Average cloud cover
28%
26%
24%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
Maunaloa, HI

Average temperature in May - Maunaloa, HI
  • Average high temperature in May: 77°F

The warmest months (with the highest average high temperature) are August and September (80.2°F).
The month with the lowest average high temperature is February (74.3°F).

  • Average low temperature in May: 74.3°F

The months with the highest average low temperature are September and October (77.2°F).
The coldest month (with the lowest average low temperature) is March (71.2°F).

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Average pressure in May
Maunaloa, HI

Average pressure in May - Maunaloa, HI
  • Average pressure in May: 30.04"Hg

The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

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Average wind speed in May
Maunaloa, HI

Average wind speed in May - Maunaloa, HI
  • Average wind speed in May: 11.6mph

The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.8mph).

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Average humidity in May
Maunaloa, HI

Average humidity in May - Maunaloa, HI
  • Average humidity in May: 76%

The months with the highest relative humidity are April, May, June, July and August (76%).
The months with the lowest relative humidity are January and November (74%).

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Average rainfall in May
Maunaloa, HI

Average rainfall in May - Maunaloa, HI
  • Average rainfall in May: 0.71"

The wettest month (with the highest rainfall) is March (1.3").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in May
Maunaloa, HI

Average rainfall days in May - Maunaloa, HI
  • Average rainfall days in May: 11.2 days

The month with the highest number of rainy days is March (13.2 days).
The month with the least rainy days is July (8.5 days).

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Average sea temperature in May
Maunaloa, HI

Average sea temperature in May - Maunaloa, HI
  • Average sea temperature in May: 77°F

The best months for swimming (with the highest average sea temperature) are September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

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

Average daylight in May / Average sunshine in May - Maunaloa, 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: 11h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in May
Maunaloa, HI

Average sunshine days in May - Maunaloa, HI
  • Average sunshine days in May: 13.3 days

The month with the most sunshine days is July (16.1 days).
The month with the least sunshine days is November (10.8 days).

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Average UV index in May
Maunaloa, HI

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

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

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Average cloud cover in May
Maunaloa, HI

Average cloud cover in May - Maunaloa, HI
  • Average cloud cover in May: 26

The months with the most cloud cover are February and March (Cloud cover 30).
The month with the least cloud cover is September (Cloud cover 23).

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Average visibility in May
Maunaloa, HI

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

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