Ono-i-lau Weather & Climate: Best Time to Visit

With minimal seasonal shifts, Ono-i-lau experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a comfortable 29°C (84°F) in February to a comfortable 24°C (75°F) in the coolest month, August.

Nights vary from 26°C (79°F) in February to around 22°C (72°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ono-i-lau has a notably wet climate with abundant precipitation, recording 1710 mm (67 in) of rainfall per year. The climate in Ono-i-lau shows significant variation throughout the year. Expect heavy rainfall in February, the wettest month, with an average of 226 mm (8.9 in) of precipitation over 18 rainy days.

In contrast, the driest month October offers drier and sunnier days, with around 93 mm (3.7 in) of rainfall over 16 rainy days. For more details, please visit our Ono-i-lau Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

The mean water temperature over the year ranges from 23°C (73°F) in July to 27°C (81°F) in February.

Water temperature over the year

The relative humidity is high throughout the year in Ono-i-lau.

The city experiences its highest humidity in March, reaching 83%. In July, the humidity drops to its lowest level at 77%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year