End of the drier season · Weather & things to do
Kailua & Lanikai in September
Kailua & Lanikai's warmest month brings highs averaging 81°F (27°C), lows of 78°F (26°C) and about 1.4 in (36 mm) of rain.
At 89/100 for comfort (3rd of 12), it's one of the best months to visit.
- Avg high
- 81°F (27°C)
- Avg low
- 78°F (26°C)
- Rain
- 1.4 in (36 mm)
- Humidity
- 76%
- Cloud cover
- 47%
- Daylight
- ~12 h 07 min
- Comfort score
- 89/100 · Great
What September feels like
Days are warm, averaging 81°F (27°C).
Nights stay warm too, with lows averaging 78°F (26°C).
With 76% average humidity, it feels muggy.
About 1.4 in (36 mm) of rain falls in a typical year's September.
It's breezy, with average winds near 13 mph (5.8 m/s) at ground level.
Plan around September
September is one of Kailua & Lanikai's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 84/100.
- Comfort holds steady from August (89 → 89/100).
- Our Honolulu New Year's Eve route is planned for Dec 30 – Jan 1, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clotheshighs average 81°F
- Sunscreen, sunglasses and a hatstrong sun this month
- Quick-dry fabrics76% average humidity
- Windproof shellaverage wind 13 mph
- Comfortable walking shoesmost picks involve some walking
What to do in Kailua & Lanikai in September
September is good outdoor weather here, so these picks lean toward the open air.
Lanikai Beach
Narrow strip of white sand in a residential neighborhood, facing the twin Mokulua islets.
Why now September scores 89/100 for comfort, good conditions for being outside.
Nuuanu Pali Lookout
Windy lookout at the top of the Pali Highway with a view of the green Koolau cliffs and the windward coast.
Why now Highs near 81°F and 1.4 in of monthly rain make this an easy outdoor pick.
Lanikai Pillbox Trail
Short, steep climb up Kaiwa Ridge to old concrete bunkers with views over Lanikai and the islets.
Why now One to do outside while the weather is on your side.
Buzz's Original Steakhouse
Wood-paneled steakhouse across from Kailua Beach since the 1960s, with a salad bar and grilled fish.
Nearby in September
- Waikiki in September~11 mi · highs 83°F, 2.0 in rain · 1°C (2°F) warmer by day, about as wet
- Oahu in September~18 mi · highs 81°F, 2.0 in rain · similar daytime temperatures, about as wet
- Maui in September~99 mi · highs 73°F, 1.5 in rain · 4°C (8°F) cooler by day, about as wet
- Big Island in September~185 mi · highs 56°F, 4.7 in rain · 14°C (24°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.
Kailua & Lanikai in September: quick answers
Is September a good time to visit Kailua & Lanikai?
Yes. On the climate data it's one of the best months, scoring 89/100. Expect highs of 81°F (27°C) and 1.4 in (36 mm) of rain.
How hot is Kailua & Lanikai in September?
Average highs are 81°F (27°C) and average lows 78°F (26°C), making it the warmest month by daytime highs.
Does it rain a lot in Kailua & Lanikai in September?
Not much: about 1.4 in (36 mm) of rain falls across September on average, the 5th-driest month of the year. The annual total is about 23.7 in (601 mm).
What should I pack for Kailua & Lanikai in September?
Bring light, breathable clothes (highs average 81°F), sunscreen, sunglasses and a hat (strong sun this month), quick-dry fabrics (76% average humidity), windproof shell (average wind 13 mph) and comfortable walking shoes (most picks involve some walking).
More on Kailua & Lanikai
Planning Kailua & Lanikai in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.