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

August weather forecast and climate
Hana, HI

August, the last month of the summer, in Hana, is another warm month, with average temperature varying between 82.9°F (28.3°C) and 72°F (22.2°C).

Temperature

August and September, with an average high-temperature of 82.9°F (28.3°C), are the warmest months.

Rainfall

In Hana, during 16 rainfall days, 6" (151.9mm) of precipitation is typically accumulated. Throughout the year, in Hana, Hawaii, there are 171 rainfall days, and 82.5" (2096.7mm) of precipitation is accumulated.

Ocean temperature

In Hana, the average seawater temperature is 79.3°F (26.3°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in August is 12.8h.

Sunshine

Months with the most sunshine are June through September, with an average of 8h of sunshine.

UV index

June through August, with an average maximum UV index of 12, are months with the highest UV index in Hana. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 12 transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in 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. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What are the warmest months in Hana?

Warmest months in Hana, Hawaii, are August and September, with an average high-temperature of 82.9°F (28.3°C).

What is the temperature in August in Hana?

In Hana, in August, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 72°F (22.2°C).

How much does it rain in Hana in August?

In Hana, Hawaii, in August, it is raining for 16 days, with typically 6" (151.9mm) of accumulated precipitation.

What is the water temperature in August in Hana?

In Hana, in August, the average water temperature is 79.3°F (26.3°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 August in Hana?

The average length of the day in August in Hana, Hawaii, is 12.8h.

What are the months with the most sunshine in Hana?

June through September, with an average of 8h of sunshine, are months with the most sunshine in Hana.

How long on average sun shines in August in Hana?

The average sunshine in August in Hana is 8h.

When is the highest UV index in Hana?

Months with the highest UV index in Hana, Hawaii, are June through August, with an average maximum UV index of 12.

What is the UV index reading in August in Hana?

In August, the average daily maximum UV index in Hana is 12. A UV Index reading of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays.
Average temperature in August - Hana, HI
  • Average high temperature in August: 28.3°C

Warmest months (with the highest average high temperature) are August and September (28.3°C).
Months with the lowest average high temperature are January, February and March (25.6°C).

  • Average low temperature in August: 22.2°C

The month with the highest average low temperature is August (22.2°C).
The coldest month (with the lowest average low temperature) is February (17.8°C).

Average rainfall in August - Hana, HI
  • Average rainfall in August: 151.9mm

The wettest month (with the highest rainfall) is March (241.8mm).
The driest month (with the lowest rainfall) is June (103.6mm).

Average rainfall days in August - Hana, HI
  • Average rainfall days in August: 16 days

Months with the highest number of rainy days are April, July and August (16 days).
Months with the lowest number of rainy days are January and February (12 days).

Average sea temperature in August - Hana, HI
  • Average sea temperature in August: 26.3°C

The best month for swimming (with the highest average sea temperature) is September (26.7°C).
The coldest month (with the lowest average sea temperature) is March (24.3°C).

Average daylight in August / Average sunshine in August - Hana, HI
  • Average daylight in August: 12.8h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in August: 8h

Months with most sunshine are June, July, August and September (Average sunshine: 8h).
Months with least sunshine are November and December (Average sunshine: 6).

Average UV index in August - Hana, HI
  • Average UV index in August: 12

Months with the highest UV index are June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).