Honolulu, HI climate: monthly averages and frost dates
Honolulu, HI has warm winters and warm summers by this site's scale, with semi-arid annual precipitation. The figures are the 1991–2020 climate normals for NOAA station USW00022521 (HONOLULU INTL AP), 5 mi (8 km) in a straight line from the city's center point (US Census).
- Warmest month high
- 88.8°F
- August
- Coldest month mean
- 73.6°F
- January
- Precipitation
- 16.4 in
- per year
- Snowfall
- no data
- per year
- 32°F nights
- 0.0
- per year
Monthly averages in Honolulu
| Month | High °F | Low °F | Mean °F | Precip. in | Snow in | Days ≥0.01 in | Days ≥90°F | Nights ≤32°F |
|---|---|---|---|---|---|---|---|---|
| January | 80.5 | 66.8 | 73.6 | 1.84 | – | 7.7 | 0.0 | 0.0 |
| February | 80.5 | 67.1 | 73.8 | 1.94 | – | 7.6 | 0.0 | 0.0 |
| March | 81.2 | 68.1 | 74.7 | 2.36 | – | 8.7 | 0.0 | 0.0 |
| April | 83.1 | 70.1 | 76.6 | 0.77 | – | 7.5 | 0.1 | 0.0 |
| May | 84.8 | 71.5 | 78.2 | 0.82 | – | 6.0 | 0.7 | 0.0 |
| June | 86.9 | 73.8 | 80.3 | 0.50 | – | 6.3 | 1.7 | 0.0 |
| July | 88.1 | 75.1 | 81.6 | 0.52 | – | 7.3 | 6.6 | 0.0 |
| August | 88.8 | 75.6 | 82.2 | 0.84 | – | 5.7 | 10.3 | 0.0 |
| September | 88.4 | 74.8 | 81.6 | 0.88 | – | 7.2 | 8.7 | 0.0 |
| October | 86.9 | 73.9 | 80.4 | 1.51 | – | 7.7 | 3.3 | 0.0 |
| November | 84.1 | 71.8 | 78.0 | 2.25 | – | 8.6 | 0.2 | 0.0 |
| December | 81.8 | 69.2 | 75.5 | 2.18 | – | 8.9 | 0.0 | 0.0 |
| Year | 84.6 | 71.5 | 78.0 | 16.41 | – | 89.2 | 31.6 | 0.0 |
How cold is winter in Honolulu?
Winters in Honolulu are warm by this site's scale (coldest-month mean 60°F or more). The coldest month is January, with a mean temperature of 73.6°F (23.1°C), a normal daily high of 80.5°F (26.9°C) and a normal daily low of 66.8°F (19.3°C).
Nights at or below 32°F are almost unknown here: the normal count rounds to 0.0 a year.
How hot is summer in Honolulu?
Summers in Honolulu are warm by this site's scale (hottest-month high 80 to under 90°F). August has the highest normal daily high, 88.8°F (31.6°C), with nights averaging 75.6°F (24.2°C).
The high reaches 90°F or more on 31.6 days in a normal year.
What is the wettest month in Honolulu?
Honolulu gets 16.41 in (417 mm) of precipitation in a normal year, which this site classes as semi-arid (10 to under 20 in a year). The wettest month is March with 2.36 in (60 mm); the driest is June with 0.50 in (13 mm).
Measurable precipitation (0.01 in or more) falls on 89.2 days a year.
Does it snow in Honolulu?
NOAA publishes no snowfall normal for station USW00022521, so this page gives no snow figures for Honolulu.
Which months are mild in Honolulu?
7 months in Honolulu meet this site's comfort thresholds (normal high 65–85°F, low 45°F or higher, fewer than 10 days with 0.10 in or more of precipitation): November to May.
Thresholds and their limits: methodology.
Frost dates and growing season in Honolulu
Honolulu's station has no night at or below 32°F in a typical year: NOAA's median freeze-free season is 365 days and the normal count of such nights is 0.0 a year. NOAA publishes no 32°F frost dates here because too few years had one.
NOAA gives a 0% chance of a 32°F night in every month.
| Threshold | Median last date (spring) | Median first date (autumn or winter) | Median season, days |
|---|---|---|---|
| 36°F | No such night in a typical year (NOAA publishes no dates) | ||
| 32°F | No such night in a typical year (NOAA publishes no dates) | ||
| 28°F | No such night in a typical year (NOAA publishes no dates) | ||
| 24°F | No such night in a typical year (NOAA publishes no dates) | ||
| 20°F | No such night in a typical year (NOAA publishes no dates) | ||
| 16°F | No such night in a typical year (NOAA publishes no dates) | ||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
Nearby and similar places
Of the places on this site, the closest to Honolulu by station distance are San Francisco, CA at 2,397 mi (3,858 km), Los Angeles, CA at 2,554 mi (4,110 km) and Portland, OR at 2,602 mi (4,188 km).
Among places whose winter, summer and precipitation words are each within one band of Honolulu's (winter: warm, summer: warm, precipitation: semi-arid), the closest monthly temperature and precipitation patterns are San Diego, CA, Los Angeles, CA and San Francisco, CA.
Compared with San Francisco, CA, Honolulu's peak-month normal high is 14.0°F (7.8°C) higher, its coldest-month mean is 22.3°F (12.4°C) higher, and its annual precipitation is 3.23 in less.
| Place | Listed as | Station distance | Coldest mean °F | Warmest high °F | Precip. in/yr | Snow in/yr | Last frost |
|---|---|---|---|---|---|---|---|
| Honolulu, HI | this page | – | 73.6 | 88.8 | 16.4 | – | no freeze |
| San Francisco, CA | nearby, similar | 2,397 mi (3,858 km) | 51.3 | 74.8 | 19.6 | – | rare freeze |
| Los Angeles, CA | nearby, similar | 2,554 mi (4,110 km) | 57.6 | 76.7 | 12.2 | – | no freeze |
| Portland, OR | nearby | 2,602 mi (4,188 km) | 41.6 | 82.3 | 36.9 | 4.2 | March 13 |
| San Diego, CA | similar | 2,611 mi (4,202 km) | 57.9 | 77.3 | 9.8 | – | no freeze |
How nearby and similar places are chosen: methodology.
Source and station
The data for Honolulu come from NOAA station HONOLULU INTL AP, HI US (USW00022521) at 21.3239, -157.9294, elevation 7 ft (2 m). It lies 5 mi (8 km) in a straight line from the center point of Urban Honolulu CDP, the “internal point” in the US Census 2024 Gazetteer.
Each monthly normal used here rests on at least 28 years of data from 1991–2020 (NOAA's per-field year counts).
NOAA publishes no value for 2 of the monthly fields at this station; they are shown as “no data”.
NOAA completeness flags on the monthly fields used here:
- S: Standard: meets WMO standards for data availability for 24 or more years.
Cite the data as:
Palecki, Michael; Durre, Imke; Applequist, Scott; Arguez, Anthony; Lawrimore, Jay (2021). U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). Station USW00022521 (HONOLULU INTL AP, HI US). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/wck8-er13. Accessed 2026-10-09.
Palecki, Michael; Durre, Imke; Applequist, Scott; Arguez, Anthony; Lawrimore, Jay (2021). U.S. Climate Normals 2020: U.S. Annual/Seasonal Climate Normals (1991-2020). Station USW00022521 (HONOLULU INTL AP, HI US). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/4ek7-fk11. Accessed 2026-10-09.
Files used: monthly normals CSV, annual/seasonal normals CSV (retrieved 2026-10-09). The values on this page as JSON: /us/hi/honolulu/data.json.