Weather in Ko Olina, HI
Ko Olina, Tuesday, 20 October, 08:20
Mostly clear. Feels like 79°. High 80°, low 76°.
Monthly outlook for Ko Olina, HI: average high 80°, average low 75.7°. That is 1.2° below the climate normal for October. Precipitation is expected on 6 days (about 5.1 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 23 October (82.5°), the coolest 26 October (70.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 80.1° | 82.4° | -1.3° |
| 30 October – 8 November | 79.7° | 81.7° | -1.1° |
| 9 November – 18 November | at normal | 80.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Kalaeloa (3 mi).
0
Ko Olina, Wednesday, 21 October
Clear. High 82°, low 75°.
0
Ko Olina, Thursday, 22 October
Light rain. High 81°, low 75°.
0Ko Olina, Friday, 23 October
Mostly clear. High 83°, low 75°.
0
Ko Olina, Saturday, 24 October
Overcast. High 81°, low 76°.
0Ko Olina, Sunday, 25 October
Light rain. High 80°, low 76°.
2.18Ko Olina, Monday, 26 October
Heavy rain. High 76°, low 71°.
1.43Ko Olina, Tuesday, 27 October
Heavy rain. High 78°, low 73°.
0.04Ko Olina, Wednesday, 28 October
Light rain. High 81°, low 76°.
0Ko Olina, Thursday, 29 October
Overcast. High 79°, low 75°.
0.42Ko Olina, Friday, 30 October
Light rain. High 79°, low 76°.
0.39Ko Olina, Saturday, 31 October
Light rain. High 78°, low 76°.
0.33Ko Olina, Sunday, 1 November
Rain. High 79°, low 78°.
0.3Ko Olina, Monday, 2 November
Rain. High 81°, low 78°.
0Ko Olina, Tuesday, 3 November
Overcast. High 82°, low 77°.
0
Ko Olina, Wednesday, 4 November
Partly cloudy. High 80°, low 76°.
0.09Ko Olina, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Ko Olina, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Ko Olina, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Ko Olina, Sunday, 8 November
Climate normal for this date — 60-year average.
0.03Ko Olina, Monday, 9 November
Climate normal for this date — 60-year average.
0.02Ko Olina, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Ko Olina, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Ko Olina, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Ko Olina, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Ko Olina, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Ko Olina, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Ko Olina, Monday, 16 November
Climate normal for this date — 60-year average.
0.06Ko Olina, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.19Ko Olina, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Ko Olina, HI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Ko Olina, HI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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