Quick answer: Oahu sits at 21.4° N and gets about 12 h 44 min of daylight today, with the sun 80° up at solar noon. The panel above scores each upcoming day 0–100 and returns a direct go, wait or skip verdict.
Conditions on this page are recalculated from the latest forecast every time it is opened, for the current date in the location's own time zone. Showing .
Planning a trip to Oahu, USA? Our 7-day weather forecast ranks the upcoming days by overall conditions, sunshine hours, temperature comfort and rain probability so you can pick the single best day to visit. We score every day on a 0–100 scale that combines temperature, precipitation chance, wind, cloud cover and humidity, then highlight the most stable day, the sunniest day, and the day with the lowest rain risk. Whether you're sightseeing, taking photos, walking the city or planning outdoor dining in Oahu, our recommendation tells you which date in the next week gives you the highest chance of clear, comfortable weather. Forecasts come from Open-Meteo, are re-fetched each time you open the page, and reflect timezone-correct sunrise, sunset and golden-hour times for Oahu, so you can match outdoor plans to actual local conditions rather than generic averages.
Any weather decision in Oahu starts from the light budget. In August the location gets about 12 h 44 min of daylight, with the sun peaking 80° above the horizon — that sets how warm afternoons run, how long outdoor plans stay viable and how much usable photographic light the day contains. The scores above layer the live Open-Meteo forecast on top of that baseline.
Daylight, midday sun angle and golden-hour length below are calculated for Oahu's own coordinates (21.44° N, 158.00° W) on the 15th of each month. Temperature and rain-day figures come from the curated climate record for this city.
| Month | Daylight | Sun at solar noon | Golden hour | Avg high / low, rain days |
|---|---|---|---|---|
| January | 11 h 0 min | 47° | 47 min | 27°C / 19°C, 9 rain days |
| February | 11 h 24 min | 55° | 44 min | 27°C / 19°C, 11 rain days |
| March | 12 h 0 min | 66° | 43 min | 28°C / 19°C, 12 rain days |
| April | 12 h 36 min | 78° | 44 min | 28°C / 20°C, 8 rain days |
| May | 13 h 12 min | 87° | 46 min | 30°C / 21°C, 6 rain days |
| June | 13 h 24 min | 88° | 47 min | 30°C / 22°C, 2 rain days |
| July | 13 h 18 min | 90° | 47 min | 31°C / 22°C, 2 rain days |
| August | 12 h 54 min | 82° | 44 min | 31°C / 22°C, 2 rain days |
| September | 12 h 12 min | 71° | 43 min | 30°C / 22°C, 2 rain days |
| October | 11 h 36 min | 59° | 44 min | 30°C / 21°C, 6 rain days |
| November | 11 h 6 min | 49° | 46 min | 28°C / 20°C, 8 rain days |
| December | 10 h 48 min | 45° | 48 min | 28°C / 19°C, 12 rain days |
Scores are capped by dealbreakers — heavy rain, dangerous wind, thick fog or hazardous UV pull a day down no matter how pleasant the rest of the numbers look. Forecast data is Open-Meteo; solar and lunar values are computed for Oahu's own coordinates and time zone. Full details on the methodology page.