Middle of the wetter season · Weather & things to do
Oahu in December
Oahu edges cooler than November, with highs of 76°F (24°C), lows of 71°F (22°C) and about 3.7 in (93 mm) of rain.
Its comfort score of 82/100 is still Good, though it ranks 11th of 12 here.
- Avg high
- 76°F (24°C)
- Avg low
- 71°F (22°C)
- Rain
- 3.7 in (93 mm)
- Humidity
- 77%
- Cloud cover
- 50%
- Daylight
- ~10 h 42 min
- Comfort score
- 82/100 · Great
What December feels like
Days are warm, averaging 76°F (24°C).
Nights cool to an average low of 71°F (22°C).
With 77% average humidity, it feels muggy.
Some rain is likely, about 3.7 in (93 mm) in the month, so pack for a shower or two.
It's breezy, with average winds near 11 mph (5.1 m/s) at ground level.
Plan around December
December is one of the lower-scoring months here; the best are January and May – September.
- Inside the wettest three-month stretch, October – December.
- Shortest days of the year, about 10 h 42 min of daylight.
- Comfort holds steady from November (82 → 82/100).
- Our Hawaii Paradise route recommends Apr – Oct, so December falls outside its suggested window.
What to pack for December
- Light, breathable clotheshighs average 76°F
- Quick-dry fabrics77% average humidity
- Packable rain jacket or umbrellaabout 3.7 in of rain
- Windproof shellaverage wind 11 mph
- Comfortable walking shoesmost picks involve some walking
What to do in Oahu in December
With conditions on your side, the picks below favor time outside.
Matsumoto Shave Ice
Haleiwa shave ice stand open since 1951, a North Shore ritual.
Mai Tai Bar at the Royal Hawaiian
Beachfront bar at the pink 1927 Royal Hawaiian for a sunset mai tai.
Pearl Harbor National Memorial
Boat out to the USS Arizona Memorial and walk the museums on the 1941 attack.
Why now December scores 82/100 for comfort, good conditions for being outside.
Waikiki Beach
Calm, sandy swim and beginner surf with Diamond Head as the backdrop.
Why now Highs near 76°F and 3.7 in of monthly rain make this an easy outdoor pick.
Leonard's Bakery
Honolulu institution since 1952 frying hot, sugar-rolled Portuguese malasadas.
Nearby in December
- Waikiki in December~15 mi · highs 78°F, 3.7 in rain · 1°C (2°F) warmer by day, about as wet
- Kailua & Lanikai in December~18 mi · highs 77°F, 2.9 in rain · similar daytime temperatures, drier
- Maui in December~116 mi · highs 69°F, 2.8 in rain · 4°C (7°F) cooler by day, drier
- Big Island in December~200 mi · highs 51°F, 6.7 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 December: quick answers
Is December a good time to visit Oahu?
It's one of the tougher months here, scoring 82/100, held back mainly by humidity. The best months are January and May – September. Expect highs of 76°F (24°C) and 3.7 in (93 mm) of rain. Our Hawaii Paradise route recommends Apr – Oct, so December is outside its suggested window.
How hot is Oahu in December?
Average highs are 76°F (24°C) and average lows 71°F (22°C), making it the 4th-coldest month by daytime highs.
Does it rain a lot in Oahu in December?
Some: about 3.7 in (93 mm) of rain falls across December on average, the 2nd-wettest month of the year. The annual total is about 30.4 in (771 mm).
What should I pack for Oahu in December?
Bring light, breathable clothes (highs average 76°F), quick-dry fabrics (77% average humidity), packable rain jacket or umbrella (about 3.7 in of rain), windproof shell (average wind 11 mph) and comfortable walking shoes (most picks involve some walking).
Planning Oahu in December?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.