Hanalei (HI) Temperature by Month

Hanalei in Hawaii, United States of America enjoys a stable climate, with daytime temperatures staying close to 26°C (79°F) throughout the year. Explore the full monthly breakdown below.

Hanalei enjoys a stable climate with temperatures staying pretty much the same throughout the year. Maximum daytime temperatures range from a comfortable 24°C (75°F) in February to a comfortable 28°C (82°F) in September. Nights are consistently cool, with lows between 24°C (75°F) and 20°C (68°F).

The chart below illustrates the average maximum day and minimum night temperatures in Hanalei by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. September, the city's warmest month, averages 242 hours of sunshine.

The chart below shows the average temperature throughout the year:

Hanalei's average annual maximum temperature is 26°C (79°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Hanalei, February is the coolest month, with average highs of 24°C (75°F) and humidity around 75%, considered high. In September, the warmest month, temperatures average 28°C (82°F) with 74% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Hanalei this rarely lasts long on the ground.

For more on Hanalei's weather, including monthly rainfall, sunshine hours, and humidity, visit our Hanalei climate page.