Lihue Weather in September

September in Lihue averages 28°C (82°F) during the day and 24°C (75°F) at night. With just 64 mm (2.5 in) of rainfall on average, it doesn't get much drier than this.

Rainfall in Lihue in September

The month is known for having the least rain of the year. Make the most of the sunshine and clear skies. Past climate data indicates that roughly 16 days will see rain, totalling around 64 mm (2.5 in) for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Lihue in September

The temperature in Lihue in September is perfect. Daytime highs reach 28°C (82°F), with nights dropping to 24°C (75°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in Lihue in September

With approximately 242 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Lihue in September

Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

Average water temperature in September

At 27°C (81°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

If you're planning additional trips, our weather planner can help you find destinations that match your weather preferences.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Lihue's climate page.

Lihue Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 28°C (82°F)  

Water Temperature 27°C (81°F)  

Chance of Rain 52%  

Precipitation 64 mm (2.5 in)  

Rainy days 16 days  

Humidity 74%  

Windspeed 4 m/s (8 knots)  

Sunshine 242 hours  

Percentage Sunshine 66%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Lihue typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 24°C (75°F).

Average temperatures in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Lihue in September

Browse day-by-day weather records for Lihue spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Lihue historical weather extremes in September

Based on weather observations in Lihue between 1976 and 2025, these are the recorded extremes during September.

• The hottest September day on record in Lihue reached 33°C (91°F) (September 4, 2019).
• The coldest September day was on September 7, 1996, with a maximum of 26°C (79°F).
• The lowest overnight temperature recorded in September was 18°C (64°F) (September 17, 1981).

What to Wear in Lihue in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Lihue in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

8/10

Walking

8/10

Camping

8/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Lihue's climate page.

More climate data for Lihue

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Lihue climate overview or explore weather in the United States of America.