Kailua Weather in December

With daytime temperatures of 26°C (79°F) and nighttime lows of 22°C (72°F), December in Kailua brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Kailua in December

With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. Based on our climate data of the past 30 years, about 11 days of rain are anticipated, with 61 mm (2.4 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Kailua in December

Kailua in December has excellent weather. Days reach 26°C (79°F) and nights cool to 22°C (72°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.

Sunshine in Kailua in December

Expect a lot of sunshine this month, with about 199 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Kailua in December

In December, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Average water temperature in December

The water is 25°C (77°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

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