Oahu Klimat and Average Väder
Klimat of Oahu: average temperatures, rainfall and seasons month by month.
Klimat in Oahu month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Månad | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januari | 25° | 18° | 108 mm | ★★★★☆ |
| februari | 25° | 17° | 56 mm | ★★★★☆ |
| mars | 25° | 19° | 152 mm | ★★★☆☆ |
| april | 26° | 19° | 120 mm | ★★★★☆ |
| maj | 27° | 20° | 100 mm | ★★★★☆ |
| juni | 28° | 21° | 36 mm | ★★★★★ |
| juli | 29° | 21° | 42 mm | ★★★★★ |
| augusti | 29° | 22° | 61 mm | ★★★★☆ |
| september | 29° | 22° | 36 mm | ★★★★☆ |
| oktober | 29° | 21° | 34 mm | ★★★★☆ |
| november | 27° | 20° | 42 mm | ★★★★☆ |
| december | 26° | 19° | 57 mm | ★★★★☆ |
Klimat type: Mediterranean. Källa: Open-Meteo archive (ERA5).
Recent extremes in Oahu
Högest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Oahu compares med nearby places
Annual averages, and the difference against Oahu.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Pearl Harbor National Memorial | 10 km | 25°C | +2°C warmer | 717 mm |
| Daniel K. Inouye International Airport | 15 km | 24°C | +1°C warmer | 717 mm |
| Honolulu | 21 km | 24°C | +1°C warmer | 717 mm |
| Honolulu County | 21 km | 24°C | +1°C warmer | 717 mm |
| Area Code 808 | 21 km | 24°C | +1°C warmer | 717 mm |
Bästa tiden att besöka Oahu
Go in juni, juli, augusti, september, oktober and november. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januari, mars and april - expect the least comfortable mix of heat, cold or rain.
What this means for Oahu
Today is slightly warmer than average for september. The forecast high of 31°C is 2.1°C above the 29°C typical for this month.
A 57% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in juni och augusti.
The gap between the warmest and coldest month averages 4°C - an unusually even climate through the year.
What och pack, what och skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sönglasses, a brimmed hat and SPF 30+
- A packable rain shell - 6 of the next 7 days carry a real chance of rain
- Avoid swimming outside patrolled areas - waves are running at 1.6 m.
- If your dates are flexible, avoid januari, mars and april - historically the least comfortable months here.
Sammanfattning
Oahu is an island in Hawaii. Oahu is an island known for Waikiki, Pearl Harbor and the North Shore.
Just nu är det 26°C (79°F) in Oahu med mest klart. Det känns som 29°C. I dag varierar temperaturen mellan 21°C och 31°C. Risken för nederbörd är 57%. Sightseeing conditions score 8.2/10 - bra förhållanden.
Bästa tiden att besöka Oahu is juni, juli, augusti, september, oktober and november. Klimatet är Mediterranean. januari, mars and april tend och be the least comfortable months. augusti is the warmest month med average highs near 29°C, while februari is the coldest med lows near 17°C.
The closest major airport is Daniel K. Inouye International Airport (HNL), about 15 km away. Nearby highlights include Pearl Harbor National Memorial, Waikiki Beach, Kauai and Hanalei Bay.
Enkelt förklarat. Today is slightly warmer than average for september. The forecast high of 31°C is 2.1°C above the 29°C typical for this month. The best window och be outside is roughly 6 PM och 9 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Oahu today at 8.4/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Oahu
| Typ | Island |
|---|---|
| State | Hawaii |
| Land | USA |
| Kontinent | Nordamerika |
| Koordinater | 21°26′20″N 158°0′0.4″W (21.4389, -158.0001) |
| Known for | Waikiki, Pearl Harbor and the North Shore |
| Lokal tid | 3:56 PM (UTC-10:00) |
| Best months | juni, juli, augusti, september, oktober and november |
| Klimat | Mediterranean |
Väder map for Oahu
Animated model layers. Pick a layer och load it.
Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.
Explore Oahu
Every topic we hold for this place, and the same topic for the places around it.
Klimat 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 Nordamerika.
What is the weather like in Oahu just nu?
It is currently 26°C (79°F) med mest klart. Luftfuktighet is 69% and wind is 8 km/h.
When is the best time och visit Oahu?
juni, juli, augusti, september, oktober and november offer the most comfortable conditions in Oahu, which has a Mediterranean climate. januari, mars 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 3:56 PM.
What is the nearest airport och Oahu?
The closest airports are Daniel K. Inouye International Airport (HNL), 15 km away.
What are the top things och 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. |
|---|---|
| Prognos and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Väder 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 30, 2026 at 3:56 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
