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Honolulu (HI) Weather and Climate: A Comprehensive Guide

Honolulu experiences a tropical semi-arid climate. Annual average rainfall is 425 mm, it mainly rains during the winter months. Temperatures vary little throughout the year, with average high temperatures of 27°C to 32°C and average lows of 18°C to 24°C.

Summer takes place between May and October and it becomes winter between October and April.

Average maximum day and minimum night temperature

The climate in Honolulu remains fairly constant, offering comfortable temperatures throughout the year. Typically, average maximum daytime temperatures range from a comfortable 29°C in August to a comfortable 25°C in the coolest month, February.

Nights are cooler, with lows often dropping to around 21°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Honolulu tends toward drier weather patterns, receiving approximately 426 mm of rain per year. The climate in Honolulu shows significant variation throughout the year. Expect moderate rainfall in December, with an average of 55 mm of precipitation over 12 rainy days.

In contrast, July offers drier and sunnier days, with around 21 mm of rainfall over 9 rainy days. For more details, please visit our Honolulu Precipitation page.

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

Sunshine over the year

Honolulu offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between July (10.2 hours daily) and December (6.6 hours daily) provides a bit of variety for visitors and residents. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Average water temperature

The mean water temperature over the year ranges from 24°C in February to 27°C in August.

Water temperature over the year

Forecast for Honolulu (HI)

Mon   Dec 23
29°C | 23°C
NE 8 m/s
0.3 mm
partly cloudy and small chance of slight rain

partly cloudy and small chance of slight rain

Tue   Dec 24
29°C | 24°C
NE 5 m/s
0.4 mm
partly cloudy and small chance of slight rain

partly cloudy and small chance of slight rain

Wed   Dec 25
28°C | 22°C
E 7 m/s
0.7 mm
partly cloudy and small chance of rain

partly cloudy and small chance of rain

The best time of year to visit Honolulu in the United States of America

During the months of January, February, March, April and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Honolulu?
    August has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Honolulu?
    The coldest month is February with an average maximum temperature of 25°C.
  • Which is the wettest month in Honolulu?
    December tops the wettest month list with 55 mm of rainfall.
  • Which is the driest month in Honolulu?
    July is the driest month with 21 mm of precipitation.
  • Which is the sunniest month in Honolulu?
    July is the sunniest month with an average of 306 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.