Measured, not vibes
Best Time to Visit Honolulu and Oahu
By measured weather comfort, the top months for Honolulu and Oahu are February, December, January — and RouteVerdict's editorial pick, which also weighs crowds and prices, is April, May, June, September, October, November. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Honolulu (Honolulu and Oahu) (5 m elevation).
Month by month
Honolulu and Oahu weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 25.6°C / 78°F | 7.7 | 81 | Best |
| February | 25.2°C / 77°F | 6.5 | 84 | Best |
| March | 25.4°C / 78°F | 12.3 | 73 | Shoulder |
| April | 26.1°C / 79°F | 10.7 | 74 | |
| May | 27°C / 81°F | 10 | 73 | |
| June | 28.3°C / 83°F | 5.5 | 75 | |
| July | 28.8°C / 84°F | 5.8 | 72 | Shoulder |
| August | 29.3°C / 85°F | 4.8 | 71 | |
| September | 29.4°C / 85°F | 5 | 70 | |
| October | 28.7°C / 84°F | 8.3 | 68 | |
| November | 27.5°C / 82°F | 6.3 | 77 | |
| December | 26.2°C / 79°F | 6.5 | 82 | Best |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Honolulu and Oahu month by month
Honolulu's comfort score peaks in February at 84.4, with an average high of 25.2°C and 6.5 wet days, just ahead of December's 81.7 and January's 81.1. RouteVerdict's editorial pick spans April through June and September through November — entirely different months from the measured top three, favoring milder mid-year and shoulder-season stretches over the winter peak. Comfort stays remarkably consistent overall, never dropping below 68.2 (October) across the whole year.
FAQ
Honolulu and Oahu timing questions
What is the best month to visit Honolulu and Oahu?
By measured weather comfort (ERA5 2020–2024), the top months are February, December, and January, with February scoring highest. RouteVerdict's editorial pick is April, May, June, September, October, and November, which also weighs crowds, prices, and events.
What is the hottest month in Honolulu and Oahu?
September, with an average daily high of 29.4°C (85°F).
What is the rainiest month in Honolulu and Oahu?
March, averaging 12.3 days with at least 1 mm of precipitation.
When is shoulder season in Honolulu and Oahu?
March and July — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
Why does Honolulu's editorial pick skip its top three measured comfort months?
February (84.4), December (81.7), and January (81.1) are the measured top three, but RouteVerdict's editorial pick instead spans April through June and September through November.
Does Honolulu have a bad month for weather?
Not really — even its lowest-scoring month, October, still comes in at 68.2, well above what would count as uncomfortable elsewhere.