September weather forecast and climate
Lihue, HI

What are the warmest months in Lihue?

August and September, with an average high-temperature of 84.7°F (29.3°C), are warmest months in Lihue, Hawaii.

What is the temperature in September in Lihue?

The average high-temperature, in September, in Lihue, Hawaii, is 84.7°F (29.3°C), while the average low-temperature is 74.1°F (23.4°C).
Average temperature in September - Lihue, HI
  • Average high temperature in September: 84.8°F

The warmest month (with the highest average high temperature) is September (84.8°F).
The month with the lowest average high temperature is February (77.8°F).

  • Average low temperature in September: 74.1°F

The month with the highest average low temperature is August (74.6°F).
Coldest months (with the lowest average low temperature) are January and February (65.5°F).

Average humidity in September - Lihue, HI
  • Average humidity in September: 74.1%

The month with the highest relative humidity is November (76.8%).
The month with the lowest relative humidity is June (73.5%).

Average rainfall in September - Lihue, HI
  • Average rainfall in September: 4.8"

The wettest month (with the highest rainfall) is November (8.7").
The driest month (with the lowest rainfall) is June (4.3").

Average rainfall days in September - Lihue, HI
  • Average rainfall days in September: 16.3 days

The month with the highest number of rainy days is July (19.4 days).
The month with the lowest number of rainy days is February (12.1 days).

Average sea temperature in September - Lihue, HI
  • Average sea temperature in September: 81°F

Best months for swimming (with the highest average sea temperature) are August, September and October (81°F).
Coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

Average daylight in September / Average sunshine in September - Lihue, HI
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.5h).
The month with shortest days is December (Average daylight: 10.8h).

  • Average sunshine in September: 8.1h

The month with most sunshine is August (Average sunshine: 8.5h).
The month with least sunshine is December (Average sunshine: 5.2h).

Average UV index in September - Lihue, HI
  • Average UV index in September: 11

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

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