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Kailua Kona Weather

Kailua Kona 14 Days Forecast

21.09
mon

Day

81°F

E 6 mph

Precip.
15%

Night

77°F

NE 3 mph

Precip.
22%

22.09
tue

Day

81°F

E 6 mph

Precip.
15%

Night

75°F

NE 2 mph

Precip.
23%

23.09
wed

Day

81°F

E 6 mph

Precip.
17%

Night

77°F

SW 2 mph

Precip.
24%

24.09
thu

Day

79°F

NE 7 mph

Precip.
27%

Night

77°F

N 2 mph

Precip.
24%

25.09
fri

Day

77°F

SW 3 mph

Precip.
32%

Night

73°F

NE 5 mph

Precip.
34%

26.09
sat

Day

81°F

SE 4 mph

Precip.
27%

Night

77°F

NW 2 mph

Precip.
11%

27.09
sun

Day

79°F

E 6 mph

Precip.
25%

Night

75°F

N 6 mph

Precip.
13%

28.09
mon

Day

79°F

E 5 mph

Precip.
6%

Night

75°F

NW 1 mph

Precip.
26%

29.09
tue

Day

79°F

E 5 mph

Precip.
6%

Night

73°F

S 6 mph

Precip.
17%

30.09
wed

Day

77°F

NE 6 mph

Precip.
6%

Night

73°F

NE 2 mph

Precip.
14%

01.10
thu

Day

77°F

E 6 mph

Precip.
7%

Night

73°F

W 2 mph

Precip.
16%

02.10
fri

Day

77°F

E 7 mph

Precip.
8%

Night

73°F

NE 2 mph

Precip.
17%

03.10
sat

Day

77°F

E 6 mph

Precip.
7%

Night

75°F

E 6 mph

Precip.
16%

04.10
sun

Day

77°F

E 7 mph

Precip.
15%

Night

75°F

N 3 mph

Precip.
30%

sea water
temperature

Kailua Kona

monthly
weather

Kailua Kona

current
weather

Kailua Kona

7 days
forecast

Kailua Kona

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in September of 2026 was 82.4°F. The highest and lowest sea temperatures during the month were 83.1°F and 81.7°F.

Show year:

2025

2024

2023

The average sea water temperature in October of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 81.3°F and 80.4°F.