March weather forecast
Honolulu, HI

Waikiki beach with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance

Weather in March

The first month of the spring, March, is still a warm month in Honolulu, Hawaii, with temperature in the range of an average low of 69.4°F (20.8°C) and an average high of 75°F (23.9°C).

Temperature

The coldest months are February and March, with an average high-temperature of 75°F (23.9°C).

Humidity

In Honolulu, the average relative humidity in March is 75%.

Rainfall

The months with the most rainfall in Honolulu are March and October, with an average 1.81" (46mm) of precipitation.

Ocean temperature

With an average ocean temperature of 75.7°F (24.3°C), March is the month with the coldest seawater.
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.7°F (24.3°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In March, the average length of the day is 12h and 3min.
On the first day of March in Honolulu, sunrise is at 6:51 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 6:45 pm HST.

Sunshine

In Honolulu, the average sunshine in March is 8h.

UV index

The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In March, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What are the coldest months in Honolulu?

February and March, with an average high-temperature of 75°F (23.9°C), are the coldest months in Honolulu.

What is the temperature in March in Honolulu?

In Honolulu, Hawaii, in March, the average high-temperature is 75°F (23.9°C), and the average low-temperature is 69.4°F (20.8°C).

What is the average humidity in March in Honolulu?

In Honolulu, the average relative humidity in March is 75%.

What is the wettest month in Honolulu?

The months with the most rainfall are March and October, with an average 1.81" (46mm) of precipitation.

How many days does it rain in March in Honolulu?

In Honolulu, Hawaii, in March, during 18 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

What month is the ocean coldest in Honolulu?

March is the month with the coldest seawater in Honolulu, Hawaii, with an average ocean temperature of 75.7°F (24.3°C).

What is the water temperature in March in Honolulu?

In March, the average ocean temperature in Honolulu, Hawaii, is 75.7°F (24.3°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.7°F (24.3°C).

How many hours of daylight does Honolulu have in March?

In March, the average day length in Honolulu is 12h and 3min.

When is the sunrise / sunset in March in Honolulu?

In March, on the first day of the month, sunrise is at 6:51 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 6:45 pm HST.

How long on average sun shines in March in Honolulu?

In March, the average sunshine duration in Honolulu is 8h.

What is the month with the lowest UV index in Honolulu?

The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6.

What is the UV index intensity in March in Honolulu?

In Honolulu, Hawaii, the average daily maximum UV index in March is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in March
Honolulu, HI

Average temperature in March - Honolulu, HI
  • Average high temperature in March: 75°F

The warmest month (with the highest average high temperature) is September (81.5°F).
The months with the lowest average high temperature are February and March (75°F).

  • Average low temperature in March: 69.4°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).

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Average pressure in March
Honolulu, HI

Average pressure in March - Honolulu, HI
  • Average pressure in March: 30.05"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 March
Honolulu, HI

Average wind speed in March - Honolulu, HI
  • Average wind speed in March: 11.2mph

The windiest month (with the highest average wind speed) is July (12.1mph).
The calmest month (with the lowest average wind speed) is January (9mph).

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Average humidity in March
Honolulu, HI

Average humidity in March - Honolulu, HI
  • Average humidity in March: 75%

The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, September and November (74%).

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Average rainfall in March
Honolulu, HI

Average rainfall in March - Honolulu, HI
  • Average rainfall in March: 1.81"

The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days in March
Honolulu, HI

Average rainfall days in March - Honolulu, HI
  • Average rainfall days in March: 18 days

The months with the highest number of rainy days are March and October (18 days).
The month with the least rainy days is January (12.6 days).

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Average sea temperature in March
Honolulu, HI

Average sea temperature in March - Honolulu, HI
  • Average sea temperature in March: 75.7°F

The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

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Average daylight in March /
Average sunshine in March
Honolulu, HI

Average daylight in March / Average sunshine in March - Honolulu, HI
  • Average daylight in March: 12h and 3min

The month with the longest days is June (Average daylight: 13h and 25min).
The month with the shortest days is December (Average daylight: 10h and 52min).

  • Average sunshine in March: 8h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

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Average sunshine days in March
Honolulu, HI

Average sunshine days in March - Honolulu, HI
  • Average sunshine days in March: 8.3 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).

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Average UV index in March
Honolulu, HI

Average UV index in March - Honolulu, HI
  • Average UV index in March: 6

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

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Average cloud cover in March
Honolulu, HI

Average cloud cover in March - Honolulu, HI
  • Average cloud cover in March: 40

The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are January and September (Cloud cover 33).

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Average visibility in March
Honolulu, HI

Average visibility in March - Honolulu, HI
  • Average visibility in March: 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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