Honolulu, HI weather by month
West · Station: Daniel K. Inouye International Airport, Honolulu, HI · NOAA 1991–2020 Climate Normals
The best time to visit Honolulu, HI is January–March, when average daytime highs are comfortable and rainfall sits at or below the city's monthly average. Honolulu is hottest in August (avg high 89°F) and coolest in January (avg high 81°F). The wettest month is March (2.4 in) and the driest is June (0.5 in). Overall the annual mean temperature is about 78.1°F with 16.4 in of precipitation a year.
Source: NOAA NCEI U.S. Climate Normals 1991–2020. Data as of June 2026.
Monthly weather averages for Honolulu
| Month | Avg high (°F) | Avg low (°F) | Avg precip (in) |
|---|---|---|---|
| January | 81 | 67 | 1.8 |
| February | 81 | 67 | 1.9 |
| March | 81 | 68 | 2.4 |
| April | 83 | 70 | 0.8 |
| May | 85 | 72 | 0.8 |
| June | 87 | 74 | 0.5 |
| July | 88 | 75 | 0.5 |
| August | 89 | 76 | 0.8 |
| September | 88 | 75 | 0.9 |
| October | 87 | 74 | 1.5 |
| November | 84 | 72 | 2.3 |
| December | 82 | 69 | 2.2 |
Source: NOAA NCEI U.S. Climate Normals 1991–2020. Data as of June 2026.
Best time to visit Honolulu
Based on the normals above, the most pleasant window is January–March. In those months daytime highs are in the mild-to-warm range and precipitation is no higher than the city's typical month, so you avoid both the peak hot of August (when highs reach about 89°F — stay hydrated and seek shade midday) and the cool, darker conditions around January (highs near 81°F). Use the packing & comfort tool to check any specific month.
How Honolulu compares
Honolulu's 16.4 in of annual precipitation and 78.1°F mean temperature put it in context with other US cities. See where it ranks for warmest in January, rainiest overall and driest overall, or browse the full list of cities.
Frequently asked questions
What is the best time to visit Honolulu?
The most comfortable time to visit Honolulu, HI is January–March, when average daytime highs are mild and rainfall is at or below the city's average. Honolulu is hottest in August (avg high 89°F) and coolest in January (avg high 81°F), per NOAA 1991–2020 Climate Normals.
What is the average temperature in Honolulu?
Honolulu's annual mean temperature is about 78.1°F. The warmest month is August (average high 89°F, low 76°F) and the coolest is January (average high 81°F, low 67°F).
How much rain does Honolulu get?
Honolulu receives about 16.4 inches of precipitation a year. The wettest month is March (2.4 in) and the driest is June (0.5 in).
Source
Monthly averages from the NOAA NCEI U.S. Climate Normals 1991–2020, station Daniel K. Inouye International Airport, Honolulu, HI (reference values verified against the published normals). Climate normals describe a 30-year average, not a forecast; any individual year can differ. See our methodology for how "best time to visit" is derived.
Last updated: 2026-06-18