Hilo
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Hilo, HI

March, the first month of the spring, in Hilo, is also a moderately hot month, with average temperature ranging between max 79°F (26.1°C) and min 64.6°F (18.1°C).

Temperature

In Hilo, the average high-temperature in March is essentially the same as in February - a still moderately hot 79°F (26.1°C). In March, the average low-temperature is 64.6°F (18.1°C).

Humidity

In March, the average relative humidity in Hilo is 78.1%.

Rainfall

March is the month with the most rainfall. Rain falls for 21.4 days and accumulates 10.6" (270mm) of precipitation.

Ocean temperature

The month with the coldest seawater in Hilo is March, with an average ocean temperature of 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).

Daylight

The average length of the day in Hilo, Hawaii, is 12.1h.

Sunshine

The average sunshine in Hilo, Hawaii, is 4.9h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Hilo. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
In March, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in March in Hilo?

In Hilo, Hawaii, in March, the average high-temperature is 79°F (26.1°C), and the average low-temperature is 64.6°F (18.1°C).

What is the average humidity in March in Hilo?

In March, the average relative humidity in Hilo is 78.1%.

How many days does it rain in March in Hilo?

In Hilo, Hawaii, during March, the rain falls for 21.4 days and regularly aggregates up to 10.6" (270mm) of precipitation.

What is the wettest month in Hilo?

March is the month with the most rainfall. Rain falls for 21.4 days and accumulates 10.6" (270mm) of precipitation.

When is the ocean coldest in Hilo?

With an average ocean temperature of 75.7°F (24.3°C), March is the month with the coldest seawater in Hilo, Hawaii. Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.7°F (24.3°C) water may be enjoyable.

How warm is the water in March in Hilo?

In Hilo, Hawaii, in March, the average water temperature 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).

What is the average length of the day in March in Hilo?

In Hilo, the average length of the day in March is 12.1h.

How long on average sun shines in March in Hilo?

In March, the average sunshine in Hilo is 4.9h.

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

March through September, with an average maximum UV index of 12, are months with the highest UV index in Hilo, Hawaii.

What is the UV index reading in March in Hilo?

The average daily maximum UV index in March in Hilo, Hawaii, is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in March - Hilo, HI
  • Average high temperature in March: 79°F

The warmest month (with the highest average high temperature) is September (83.3°F).
The month with the lowest average high temperature is February (78.8°F).

  • Average low temperature in March: 64.6°F

The month with the highest average low temperature is September (69.7°F).
The coldest month (with the lowest average low temperature) is February (63.5°F).

Average humidity in March - Hilo, HI
  • Average humidity in March: 78.1%

The month with the highest relative humidity is November (80.3%).
The month with the lowest relative humidity is February (76%).

Average rainfall in March - Hilo, HI
  • Average rainfall in March: 10.6"

The wettest month (with the highest rainfall) is March (10.6").
The driest month (with the lowest rainfall) is June (4.3").

Average rainfall days in March - Hilo, HI
  • Average rainfall days in March: 21.4 days

Months with the highest number of rainy days are July and August (26.8 days).
The month with the lowest number of rainy days is February (15.8 days).

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

The best month for swimming (with the highest average sea temperature) is September (79.3°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

Average daylight in March / Average sunshine in March - Hilo, HI
  • Average daylight in March: 12.1h

The month with the longest days is June (Average daylight: 13.3h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in March: 4.9h

The month with most sunshine is June (Average sunshine: 5.9h).
The month with least sunshine is November (Average sunshine: 3.8h).

Average UV index in March - Hilo, HI
  • Average UV index in March: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).