Sunday, October 18, 2026 · Hour-by-hour forecast updated 9:14 PM HST
74°F and clear at peak. Wind 10 mph from the ENE, dew point 66°F.
January and February are the best running months in Honolulu, scoring 67 and 67 on the FitScore scale with mornings near 68°F and afternoon highs around 77°F. September is the toughest month: sticky dew points averaging 69°F alongside highs of 84°F drag the average FitScore down to 51 — plan on pre-dawn starts. Year-round, this is one of the tougher running climates in the country — #193 of 200 (annual FitScore 59 vs. the 74 national median), which makes timing the good windows matter more. No month clears a FitScore of 70 on average, so picking the right day matters more here than the right season.
Based on 2015–2024 daily weather history (Open-Meteo ERA5), scored against 200 U.S. cities. Monthly FitScore reflects each day’s best running window.
FitCast texts you tomorrow's hour-by-hour forecast every evening so you know exactly what to expect before your alarm goes off.
Based on today's FitScore analysis, the best time to run is 5 AM with a peak FitScore of 55/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Honolulu are January, February, and March, with average FitScores of 67, 67, and 66 based on a decade of daily weather history. The most challenging is September (FitScore 51).
Historically, October in Honolulu averages a FitScore of 53/100 — fair running weather — with highs around 83°F, lows around 74°F, dew points near 68°F, and 3.7 days of measurable rain. That's below the national median of 86 for October.
FitScore rates each hour from 0–100 for outdoor exercise based on temperature, humidity, dew point, wind, precipitation probability, UV index, and air quality. Higher scores mean better conditions.