Start of the wetter season · Weather & things to do
Oahu in October
Little changes in Oahu from September: highs stay near 80°F (27°C), lows near 75°F (24°C), and about 2.9 in (73 mm) of rain falls.
It scores 85/100 for comfort, 8th of 12, which makes it a solid shoulder-season month.
- Avg high
- 80°F (27°C)
- Avg low
- 75°F (24°C)
- Rain
- 2.9 in (73 mm)
- Humidity
- 75%
- Cloud cover
- 52%
- Daylight
- ~11 h 30 min
- Comfort score
- 85/100 · Great
What October feels like
Days are warm, averaging 80°F (27°C).
Even at night it stays warm, around 75°F (24°C).
With 75% average humidity, it feels muggy.
Some rain is likely, about 2.9 in (73 mm) in the month, so pack for a shower or two.
It's breezy, with average winds near 11 mph (5.0 m/s) at ground level.
Plan around October
October is shoulder season: good weather, a step below the best months (January and May – September).
- Start of the wettest three-month stretch (October – December), which brings about 9.9 in (252 mm) in total.
- Humidity season begins: 75% on average, up from 74% in September.
- Comfort slips from 91/100 in September to 85/100.
- October sits inside the Apr – Oct window our Hawaii Paradise route recommends.
What to pack for October
- Light, breathable clotheshighs average 80°F
- Sunscreen, sunglasses and a hathigh UV on clear days
- Quick-dry fabrics75% average humidity
- Packable rain jacket or umbrellaabout 2.9 in of rain
- Windproof shellaverage wind 11 mph
- Comfortable walking shoesmost picks involve some walking
What to do in Oahu in October
With conditions on your side, the picks below favor time outside.
Diamond Head State Monument
Steep 1.6-mile round-trip trail up a volcanic crater rim with views over Waikiki.
Why now October scores 85/100 for comfort, good conditions for being outside.
Giovanni's Shrimp Truck
Graffiti-covered Kahuku truck serving garlic shrimp plates with rice.
Waikiki Beach
Calm, sandy swim and beginner surf with Diamond Head as the backdrop.
Why now Highs near 80°F and 2.9 in of monthly rain make this an easy outdoor pick.
Pearl Harbor National Memorial
Boat out to the USS Arizona Memorial and walk the museums on the 1941 attack.
Why now One to do outside while the weather is on your side.
Mai Tai Bar at the Royal Hawaiian
Beachfront bar at the pink 1927 Royal Hawaiian for a sunset mai tai.
Nearby in October
- Waikiki in October~15 mi · highs 82°F, 2.9 in rain · 1°C (2°F) warmer by day, about as wet
- Kailua & Lanikai in October~18 mi · highs 80°F, 2.2 in rain · similar daytime temperatures, drier
- Maui in October~116 mi · highs 73°F, 2.2 in rain · 4°C (8°F) cooler by day, drier
- Big Island in October~200 mi · highs 55°F, 5.3 in rain · 14°C (25°F) cooler by day, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Oahu in October: quick answers
Is October a good time to visit Oahu?
It's a good shoulder-season choice, scoring 85/100 against a best of 93 in January and May – September. Expect highs of 80°F (27°C) and 2.9 in (73 mm) of rain. October is inside the Apr – Oct window our Hawaii Paradise route recommends.
How hot is Oahu in October?
Average highs are 80°F (27°C) and average lows 75°F (24°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Oahu in October?
Some: about 2.9 in (73 mm) of rain falls across October on average, the 5th-wettest month of the year. The annual total is about 30.4 in (771 mm).
What should I pack for Oahu in October?
Bring light, breathable clothes (highs average 80°F), sunscreen, sunglasses and a hat (high UV on clear days), quick-dry fabrics (75% average humidity), packable rain jacket or umbrella (about 2.9 in of rain) and windproof shell (average wind 11 mph).
Routes in season in October
- Hawaii Paradise Apr – Oct
Planning Oahu in October?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.