Oahu Veður Spá
Oahu weather: 24°C, light drizzle. Á klukkustund forecast, 14-day outlook, UV, air quality and the best time til visit.
Will it rain in Oahu?
Yes - rain is likely in Oahu today.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives.
Over the next 7 days, about 24 mm of precipitation is forecast, með the wettest days falling on fim., fös., lau., sun., mán., þri. and mið..
The next 7 days carry about 3.6 times a normal week's rain for september (24 mm against 7 mm).
16-day forecast for Oahu
Hæst / Lægst; Úrkoma; UV
| Dagur | Aðstæður | Hæst / Lægst | Úrkoma | Vindur | UV |
|---|---|---|---|---|---|
| fim., sep 17 | ⛈️ Þrumuveður | 28° / 23° | 100% · 4 mm | 19 km/h | 5 |
| fös., sep 18 | 🌦️ Drizzle | 28° / 22° | 99% · 4 mm | 20 km/h | 9 |
| lau., sep 19 | 🌦️ Light drizzle | 28° / 23° | 88% · 3 mm | 19 km/h | 8 |
| sun., sep 20 | 🌦️ Light drizzle | 28° / 23° | 69% · 2 mm | 20 km/h | 8 |
| mán., sep 21 | 🌦️ Light drizzle | 28° / 23° | 61% · 2 mm | 19 km/h | 7 |
| þri., sep 22 | 🌦️ Light drizzle | 27° / 23° | 80% · 3 mm | 19 km/h | 6 |
| mið., sep 23 | 🌦️ Light drizzle | 27° / 23° | 85% · 6 mm | 20 km/h | 4 |
| fim., sep 24 | 🌦️ Light drizzle | 27° / 23° | 78% · 5 mm | 22 km/h | 7 |
| fös., sep 25 | 🌦️ Light drizzle | 28° / 23° | 75% · 0 mm | 21 km/h | 8 |
| lau., sep 26 | 🌦️ Drizzle | 27° / 21° | 84% · 7 mm | 22 km/h | 8 |
| sun., sep 27 | 🌦️ Light drizzle | 27° / 21° | 70% · 2 mm | 19 km/h | 8 |
| mán., sep 28 | 🌦️ Light drizzle | 27° / 21° | 64% · 2 mm | 18 km/h | 8 |
| þri., sep 29 | 🌦️ Light drizzle | 27° / 21° | 57% · 1 mm | 15 km/h | 8 |
| mið., sep 30 | 🌦️ Light drizzle | 27° / 21° | 59% · 0 mm | 19 km/h | 8 |
| fim., okt 1 | 🌦️ Light drizzle | 28° / 21° | 35% · 1 mm | 16 km/h | 8 |
| fös., okt 2 | ☀️ Heiðskýrt | -- / -- | 23% | -- | — |
What this means for Oahu
Today is slightly cooler than average for september. The forecast high of 28°C is 1.5°C below the 29°C typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives.
Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in júní til ágúst.
The gap between the warmest and coldest month averages 4°C - an unusually even climate through the year.
What til pack, what til skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sun.glasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid janúar, mars and apríl - historically the least comfortable months here.
Sjá spá fyrir Oahu eftir tímabili
Oahu weather - more answers
Explore Oahu
Every topic we hold for this place, and the same topic for the places around it.
Veður 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 Norður-Ameríka.
What is the weather like in Oahu núna?
It is currently 24°C (74°F) með light drizzle. Raki is 97% and wind is 14 km/h.
When is the best time til visit Oahu?
júní, júlí, ágúst, september, október and nóvember offer the most comfortable conditions in Oahu, which has a Mediterranean climate. janúar, mars and apríl 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 1:41 PM.
What is the nearest airport til Oahu?
The closest airports are Daniel K. Inouye International Airport (HNL), 15 km away.
What are the top things til 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. |
|---|---|
| Spá and observations | Open-Meteo (ECMWF and national models). |
| Loftgæði and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Loftslag averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Veður 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 september 17, 2026 at 1:41 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
