May weather forecastLahaina, HI
May
Weather in May
May carries on the excellent work of its predecessor month, May sees heightened temperatures and drier conditions prevail overtaking the Lahaina skies. Daylight hours edge upwards, promising extensive sunshine, a delight for sun worshippers. Sea temperatures keep pace with the warming trend, further enhancing the beach appeal. While Lahaina's weather hovers around steady standards most of the year, May brings mild and pleasant exceptions.Temperature
Lahaina ushers in May with an average high-temperature of a still moderately hot 76.8°F (24.9°C), showing a close resemblance to the previous month. During the nights of May, Lahaina records an average low-temperature of 73°F (22.8°C), reflecting a modest decrease from daytime highs.Humidity
The average relative humidity in May is 76%.Rainfall
In May, the rain falls for 10.3 days. Throughout May, 0.55" (14mm) of precipitation is accumulated. In Lahaina, during the entire year, the rain falls for 112.6 days and collects up to 7.91" (201mm) of precipitation.Ocean temperature
In Lahaina, Hawaii, the average seawater temperature in May is 77.5°F (25.3°C).Note: Water activities including swimming and diving are pleasurable in temperatures between 77°F (25°C) and 84.2°F (29°C), ensuring comfort and enjoyment for extended time frames.
Daylight
The average length of the day in May in Lahaina is 13h and 8min.On the first day of May, sunrise is at 5:55 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 7:04 pm HST.
Sunshine
The average sunshine in May in Lahaina is 10.6h.UV index
The months with the lowest UV index are January through June, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 6 during May translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Lahaina, HI
- Average high temperature in May: 76.8°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in May: 73°F
The months with the highest average low temperature are August and October (76.5°F).
The coldest month (with the lowest average low temperature) is March (70.7°F).
Average pressure in May
Lahaina, 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).
Average wind speed in May
Lahaina, HI
- Average wind speed in May: 11.7mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.6mph).
Average humidity in May
Lahaina, HI
- Average humidity in May: 76%
The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January, February, March, September and November (75%).
Average rainfall in May
Lahaina, HI
- Average rainfall in May: 0.55"
The wettest month (with the highest rainfall) is March (1.1").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Lahaina, HI
- Average rainfall days in May: 10.3 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is November (7.7 days).
Average sea temperature in May
Lahaina, HI
- Average sea temperature in May: 77.6°F
The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (76°F).
Average daylight in May /
Average sunshine in May
Lahaina, HI
- Average daylight in May: 13h and 6min
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 36min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in May
Lahaina, HI
- Average sunshine days in May: 17.2 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is March (12.6 days).
Average UV index in May
Lahaina, HI
- Average UV index in May: 6
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in May
Lahaina, HI
- Average cloud cover in May: 30
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in May
Lahaina, 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).
