Oahu Weather Forecast
Oahu weather: 79°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Oahu weather in October
Weather map for Oahu
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Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Climate in Oahu month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 77° | 64° | 4,3 in | ★★★★☆ |
| February | 76° | 63° | 2,2 in | ★★★★☆ |
| March | 78° | 66° | 6,0 in | ★★★☆☆ |
| April | 79° | 66° | 4,7 in | ★★★★☆ |
| May | 80° | 68° | 3,9 in | ★★★★☆ |
| June | 83° | 69° | 1,4 in | ★★★★★ |
| July | 83° | 71° | 1,7 in | ★★★★★ |
| August | 85° | 71° | 0,9 in | ★★★★★ |
| September | 85° | 71° | 1,1 in | ★★★★★ |
| October | 84° | 70° | 1,3 in | ★★★★☆ |
| November | 81° | 68° | 1,7 in | ★★★★☆ |
| December | 79° | 66° | 2,2 in | ★★★★☆ |
Climate type: Mediterranean. Source: Open-Meteo archive (ERA5).
Best time to visit Oahu
Go in June, July, August, September, October and November. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, March and April - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 6 of the next 7 days carry a real chance of rain
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 31 mph.
- Avoid swimming outside patrolled areas - waves are running at 1.5 m.
- If your dates are flexible, avoid January, March and April - historically the least comfortable months here.
How Oahu compares with nearby places
Annual averages, and the difference against Oahu.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Pearl Harbor National Memorial | 6 mi | 76°F | +35°F warmer | 27 in |
| Daniel K. Inouye International Airport | 9 mi | 75°F | +34°F warmer | 27 in |
| Honolulu | 13 mi | 75°F | +34°F warmer | 27 in |
| Honolulu County | 13 mi | 75°F | +34°F warmer | 27 in |
| Area Code 808 | 13 mi | 75°F | +34°F warmer | 27 in |
See the Oahu forecast by time range
Oahu weather - more answers
Explore Oahu
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Oahu?
Oahu is an island in Hawaii. Its coordinates are 21.4389, -158.0001. It lies in North America.
What is the weather like in Oahu right now?
It is currently 79°F (26°C) with mainly clear. Humidity is 79% and wind is 12 mph.
When is the best time to visit Oahu?
June, July, August, September, October and November offer the most comfortable conditions in Oahu, which has a Mediterranean climate. January, March and April are usually the hardest months for outdoor plans.
What time zone is Oahu in?
Oahu observes Pacific/Honolulu (UTC-10:00). The local time is 6:14 PM.
What is the nearest airport to Oahu?
The closest airports are Daniel K. Inouye International Airport (HNL), 9 mi away.
What are the top things to do in Oahu?
Popular options include Pearl Harbor National Memorial, Waikiki Beach, Kauai, Hanalei Bay, Maui and Haleakala National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 6:14 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
