Honolulu Weather in January
United States · Tropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Honolulu sees average temperatures ranging from a low of 20.0°C (68.0°F) to a high of 25.4°C (77.7°F), with a mean of 22.5°C (72.5°F). Compared to the annual average of 24.1°C (75.4°F), this month is 1.6°C cooler than the yearly norm. Precipitation averages 57.2mm, making it approximately 18.0mm wetter than the monthly average of 39.0mm. The city receives an average of 9.8 hours of sunshine per day during January, with relative humidity averaging 77.2%. Wind speeds reach an average maximum of 20.9 km/h. For travelers, this month offers a temperature experience in Honolulu, with wetter-than-average conditions compared to the rest of the year.
Honolulu sounds like a year-round summer, but the rain patterns matter. I packed for beaches in November and got three wet days — the windward side gets 4x the rain of Waikiki. The sweet spot is April-May: 26°C, low rain, fewer tourists. December-March brings the big surf and whale season, plus occasional showers. Pack reef-safe sunscreen (mandatory by law), rash guard for snorkeling, and a light rain shell for windward trips. Summer (June-August) is hotter and more humid but trade winds keep it manageable. Skip spring break crowds in March — Waikiki gets packed.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | 23.0°C (73.4°F) | 22.5°C (72.5°F) | 22.2°C (72.0°F) |
| Rainfall | 58.8mm | 57.2mm | 41.5mm |
| Sunshine | 9.8 hrs | 9.8 hrs | 10.4 hrs |
| Humidity | 75.6% | 77.2% | 72.2% |
| Wind | 22.1 km/h | 20.9 km/h | 24.2 km/h |
| Rainy Days | 18.0 | 17.6 | 17.2 |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Honolulu in January, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Honolulu in January?
The average temperature in Honolulu during January ranges from 20.0°C (68.0°F) to 25.4°C (77.7°F), with a mean of 22.5°C (72.5°F).
How much does it rain in Honolulu in January?
Honolulu receives an average of 57.2mm of precipitation in January, spread across approximately 17.6 rainy days.
What should I pack for Honolulu in January?
Based on January weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is January a good time to visit Honolulu?
January is a good time to visit Honolulu, with comfortable temperatures and manageable rainfall.
Other Months for Honolulu
Cities with Similar January Climate (Tropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 21.31°, -157.86°. Timezone: Pacific/Honolulu. Last updated: 2026-07-30.