Koolauloa in Fall
In fall (September, October and November), Koolauloa sees average daytime highs around 82°F and overnight lows near 73°F, with 3.9 in of rain over about 22 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 83°F in early September to 78°F by late November. The sky is clear or mostly clear about 40% of the time across fall, and the air most often feels muggy.
Fall is Koolauloa's 3rd-best season to visit on our travel score. Koolauloa has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Koolauloa's year-round climate.
- Avg daytime high
- 82°F
- 2nd-warmest season
- Avg overnight low
- 73°F
- Rainfall
- 3.9 in
- 22 wet days
- Avg wind
- 10 mph
- Travel score
- 6.7
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Koolauloa in Fall
Over the season highs ease from about 83°F in early September to 78°F by late November.
A typical fall day in Koolauloa reaches about 82°F and drops to 73°F overnight. The warmest of the three months is September, the coolest November.
Koolauloa weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 76° / 67° | 1.6 | 7.3 | 10.8 | 7.6 |
| Feb | 76° / 67° | 1.5 | 7 | 11.3 | 7.5 |
| Mar | 76° / 68° | 2.1 | 8.9 | 11.8 | 7.2 |
| Apr | 78° / 69° | 1.0 | 8.4 | 12.5 | 7.0 |
| May | 80° / 70° | 1.1 | 8 | 13 | 7.0 |
| Jun | 82° / 72° | 0.9 | 7.3 | 13.3 | 6.9 |
| Jul | 82° / 73° | 0.8 | 7.8 | 13.2 | 6.6 |
| Aug | 83° / 74° | 0.9 | 6.8 | 12.7 | 6.3 |
| Sep | 83° / 74° | 0.8 | 7 | 12.1 | 6.3 |
| Oct | 82° / 73° | 1.3 | 7.2 | 11.5 | 6.7 |
| Nov | 79° / 71° | 1.8 | 7.7 | 11 | 7.0 |
| Dec | 77° / 69° | 1.9 | 7.2 | 10.7 | 7.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 40% of the time across fall.
Chance of precipitation in Fall
Koolauloa gets around 3.9 in of rain over 22 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 10 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.5 kWh/m².
Hazard calendar for Koolauloa
In fall, Koolauloa overlaps its pacific hurricane season. The full year is below, with each hazard's peak months called out.
Koolauloa sits in the eastern Pacific hurricane zone; the season peaks August–September.
Is fall a good time to visit Koolauloa?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Koolauloa for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Koolauloa in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Koolauloa sees daytime highs around 82°F and nights near 73°F. Pack light clothes and sun protection. About 22 days see rain.
Sea temperature near Koolauloa in Fall
The nearest coast averages about 79°F across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 80°F and coldest in February near 75°F.
The water stays above 68°F all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 75 | 75 | 75 | 76 | 77 | 78 | 78 | 79 | 80 | 80 | 79 | 77 |
| Comfort | Warm | Refreshing | Refreshing | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 75 | Warm |
| Feb | 75 | Refreshing |
| Mar | 75 | Refreshing |
| Apr | 76 | Warm |
| May | 77 | Warm |
| Jun | 78 | Warm |
| Jul | 78 | Warm |
| Aug | 79 | Warm |
| Sep | 80 | Warm |
| Oct | 80 | Warm |
| Nov | 79 | Warm |
| Dec | 77 | Warm |
UV index in Koolauloa in Fall
Clear-sky midday UV across fall averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Koolauloa peaks around July 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 9 | 10 | 11 | 10 | 11 | 12 | 12 | 12 | 9 | 7 | 6 |
| Level | High | Very high | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 9 | Very high |
| Mar | 10 | Extreme |
| Apr | 11 | Extreme |
| May | 10 | Very high |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Where is Koolauloa?
Koolauloa sits at 21.6°N, 157.9°W, 640 ft above sea level, in United States. The nearest listed city is Wahiawā, 9.3 mi away.
Topography around Koolauloa
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Koolauloa.
Within 2 miles, the terrain around Koolauloa has large variations in elevation — a maximum elevation change of 2,434 ft around an average of 722 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,828 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,983 ft.
The land around Koolauloa is covered by trees (79%) within 2 miles, trees (47%) and water (44%) within 10 miles, and water (87%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Koolauloa (21.6058°, -157.9265°, elevation 640 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.