Urban Honolulu, HI climate
Urban Honolulu has warm winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 79°, a January night drops to 63°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Urban Honolulu feels like
Winter
Spring
Summer
Fall
Urban Honolulu weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 76° | 63° | 10.6" | 0 | 11 | 0 |
| February | 76° | 63° | 9.1" | 0 | 11 | 0 |
| March | 76° | 64° | 13.7" | 0 | 14 | 0 |
| April | 76° | 65° | 12.9" | 0 | 15 | 0 |
| May | 78° | 67° | 9.3" | 0 | 13 | 0 |
| June | 78° | 68° | 12.9" | 0 | 16 | 0 |
| July | 79° | 70° | 15.4" | 0 | 16 | 0 |
| August | 80° | 70° | 12.7" | 0 | 15 | 0 |
| September | 81° | 70° | 12.2" | 0 | 15 | 0 |
| October | 80° | 69° | 12.9" | 0 | 15 | 0 |
| November | 78° | 68° | 15.1" | 0 | 16 | 0 |
| December | 76° | 65° | 14.2" | 0 | 16 | 0 |
| Year | 78° | 67° | 151.0" | 0.0" | 173 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more.
Rain and snow in Urban Honolulu
Urban Honolulu gets 151 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 173 days a year.
A year-round growing season
Heating and cooling a home in Urban Honolulu
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Urban Honolulu, 0% of that work is heating and 100% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Urban Honolulu and its neighbors
Urban Honolulu borders 3 towns with climate data. January nights across them vary by 3.7°. East Honolulu has the coldest January nights (65°) and Hickam Housing the hottest July afternoons (88°). Urban Honolulu’s January low is 63° and its July high 79°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Urban Honolulu compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Urban Honolulu’s climate
What is the coldest month in Urban Honolulu?
January, with a typical high of 76° and a low of 63°.
What is the hottest month in Urban Honolulu?
September, with a typical high of 81° and a low of 70°.
How much snow does Urban Honolulu get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Urban Honolulu?
Frost is uncommon. Only 0% of years see a night at 32° or below.
What is the rainiest month in Urban Honolulu?
July, with 15.4 inches of rain and melted snow. The year totals 151 inches.
NOAA’s gridded normals don’t cover this state, so temperatures and rainfall come from the nearest weather station. Snow, frost dates and day counts come from NOAA’s weather station at Punchbowl Crater 709, HI (1 mi, snow) and Manoa Lyon Arbo 785.2, HI (3 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.