Kailua weather in October
In October, Kailua sees average daytime highs of 80°F and overnight lows near 74°F, with 1.5 in of rain across 10 wet days and about 11.5 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 80°F through the month. The sky is clear or mostly clear about 48% of the time in October, and the air most often feels muggy.
Daylight stretches from about 11 h 48 min at the start of October to 11 h 12 min by month's end. Set against the rest of the year, October is Kailua's 9th-clearest and 10th-windiest month. For the whole year in context, see Kailua's year-round climate.
- Daytime high
- 80°
- 3rd warmest
- Overnight low
- 74°
- 10th coldest
- Rainfall
- 1.5 in
- 10 wet days
- Daylight
- 11 h 30 min
- 6:31 AM – 6:01 PM
- Cloud cover
- 48%
- 9th clearest
- Wind
- 12 mph
- 10th windiest
- Solar energy
- 5.46 kWh/m²
- Travel score
- 6.8
- out of 10
Kailua is census designated place in Honolulu County, Hawaii, United States.
- Density
- 1,411/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Day-to-day highs hold fairly steady near 80°F through the month.
A typical October day in Kailua reaches about 80°F in the afternoon and slips back to 74°F overnight — a 5°F spread between the day's warmth and the night's chill. On most days the high lands between 78°F and 82°F. Set against its neighbours, October runs on par with September and about 2°F warmer than November.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 79 | 79 | 79 | 79 | 79 | 79 |
| Avg low (°F) | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 80 | 75 |
| 2 | 80 | 75 |
| 3 | 80 | 75 |
| 4 | 80 | 75 |
| 5 | 80 | 75 |
| 6 | 80 | 75 |
| 7 | 80 | 75 |
| 8 | 80 | 75 |
| 9 | 80 | 75 |
| 10 | 80 | 75 |
| 11 | 80 | 75 |
| 12 | 80 | 75 |
| 13 | 80 | 75 |
| 14 | 80 | 75 |
| 15 | 80 | 75 |
| 16 | 80 | 75 |
| 17 | 80 | 74 |
| 18 | 80 | 74 |
| 19 | 80 | 74 |
| 20 | 80 | 74 |
| 21 | 80 | 74 |
| 22 | 80 | 74 |
| 23 | 80 | 74 |
| 24 | 80 | 74 |
| 25 | 80 | 74 |
| 26 | 79 | 74 |
| 27 | 79 | 74 |
| 28 | 79 | 74 |
| 29 | 79 | 74 |
| 30 | 79 | 74 |
| 31 | 79 | 74 |
Kailua weather by month
How October compares with the rest of the year at a glance. October is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 75° / 69° | 1.7 | 8.2 | 10.8 | 7.6 |
| Feb | 74° / 69° | 1.7 | 8.2 | 11.3 | 7.3 |
| Mar | 74° / 69° | 2.3 | 10.7 | 11.8 | 7.0 |
| Apr | 76° / 70° | 1.2 | 10.8 | 12.5 | 7.0 |
| May | 77° / 72° | 1.3 | 8.9 | 13 | 7.2 |
| Jun | 79° / 73° | 1.2 | 10.4 | 13.3 | 6.9 |
| Jul | 80° / 74° | 1.2 | 10.8 | 13.2 | 6.8 |
| Aug | 80° / 75° | 1.2 | 9.5 | 12.7 | 6.9 |
| Sep | 81° / 75° | 1.1 | 9.2 | 12.1 | 6.9 |
| Oct | 80° / 74° | 1.5 | 10 | 11.5 | 6.8 |
| Nov | 78° / 73° | 2.3 | 11.3 | 11 | 6.7 |
| Dec | 76° / 71° | 2.3 | 10.6 | 10.7 | 7.1 |
Cloud cover in October
The sky is clear or mostly clear about 48% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 23% of October, with mostly cloudy or overcast conditions the remaining 30%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 74 | 73 | 73 | 73 | 72 | 71 | 71 | 71 | 70 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 70 | 70 | 70 | 70 | 70 | 71 | 71 | 70 | 70 |
| Cloudier (%) | 26 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 30 | 30 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 74 | 26 |
| 2 | 73 | 27 |
| 3 | 73 | 27 |
| 4 | 73 | 27 |
| 5 | 72 | 28 |
| 6 | 71 | 29 |
| 7 | 71 | 29 |
| 8 | 71 | 29 |
| 9 | 70 | 30 |
| 10 | 70 | 30 |
| 11 | 70 | 30 |
| 12 | 70 | 30 |
| 13 | 69 | 31 |
| 14 | 69 | 31 |
| 15 | 69 | 31 |
| 16 | 69 | 31 |
| 17 | 69 | 31 |
| 18 | 69 | 31 |
| 19 | 69 | 31 |
| 20 | 69 | 31 |
| 21 | 69 | 31 |
| 22 | 69 | 31 |
| 23 | 70 | 30 |
| 24 | 70 | 30 |
| 25 | 70 | 30 |
| 26 | 70 | 30 |
| 27 | 70 | 30 |
| 28 | 71 | 29 |
| 29 | 71 | 29 |
| 30 | 70 | 30 |
| 31 | 70 | 30 |
Chance of precipitation in October
Kailua gets around 1.5 in of rain over 10 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 33% and peaks near 36% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 34 | 34 | 35 | 35 | 36 | 36 | 36 |
| Rain chance (%) | |
|---|---|
| 1 | 31 |
| 2 | 31 |
| 3 | 31 |
| 4 | 31 |
| 5 | 31 |
| 6 | 32 |
| 7 | 32 |
| 8 | 32 |
| 9 | 32 |
| 10 | 32 |
| 11 | 32 |
| 12 | 32 |
| 13 | 32 |
| 14 | 32 |
| 15 | 32 |
| 16 | 32 |
| 17 | 32 |
| 18 | 32 |
| 19 | 32 |
| 20 | 32 |
| 21 | 32 |
| 22 | 32 |
| 23 | 33 |
| 24 | 33 |
| 25 | 34 |
| 26 | 34 |
| 27 | 35 |
| 28 | 35 |
| 29 | 36 |
| 30 | 36 |
| 31 | 36 |
Humidity in October
Most of October feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the muggy band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| Humid (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 |
| Muggy (%) | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 65 | 65 | 65 | 65 | 66 | 66 | 66 | 66 | 67 | 66 | 67 | 67 | 67 | 67 | 67 | 67 | 66 | 67 | 66 | 66 | 66 | 66 | 66 | 67 |
| Oppressive (%) | 36 | 36 | 35 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 31 | 31 | 30 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 24 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 0 | 2 | 62 | 36 |
| 2 | 0 | 2 | 62 | 36 |
| 3 | 0 | 2 | 63 | 35 |
| 4 | 0 | 2 | 63 | 35 |
| 5 | 0 | 2 | 63 | 35 |
| 6 | 0 | 2 | 64 | 34 |
| 7 | 0 | 2 | 64 | 34 |
| 8 | 0 | 2 | 65 | 33 |
| 9 | 0 | 2 | 65 | 33 |
| 10 | 0 | 3 | 65 | 32 |
| 11 | 0 | 3 | 65 | 32 |
| 12 | 0 | 3 | 66 | 31 |
| 13 | 0 | 3 | 66 | 31 |
| 14 | 0 | 3 | 66 | 31 |
| 15 | 0 | 3 | 66 | 31 |
| 16 | 0 | 3 | 67 | 30 |
| 17 | 0 | 4 | 66 | 30 |
| 18 | 0 | 4 | 67 | 29 |
| 19 | 0 | 4 | 67 | 29 |
| 20 | 0 | 5 | 67 | 28 |
| 21 | 0 | 5 | 67 | 28 |
| 22 | 0 | 6 | 67 | 27 |
| 23 | 0 | 6 | 67 | 27 |
| 24 | 0 | 7 | 66 | 27 |
| 25 | 0 | 7 | 67 | 26 |
| 26 | 1 | 7 | 66 | 26 |
| 27 | 1 | 7 | 66 | 26 |
| 28 | 1 | 7 | 66 | 26 |
| 29 | 1 | 8 | 66 | 25 |
| 30 | 1 | 8 | 66 | 25 |
| 31 | 1 | 8 | 67 | 24 |
Wind in October
Winds average 12 mph in October.
Across October, daily wind ranges from about 12 mph on the calmest days to 12 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | light breeze |
| 8 | 12 | light breeze |
| 9 | 12 | light breeze |
| 10 | 12 | light breeze |
| 11 | 12 | light breeze |
| 12 | 12 | light breeze |
| 13 | 12 | light breeze |
| 14 | 12 | light breeze |
| 15 | 12 | light breeze |
| 16 | 12 | light breeze |
| 17 | 12 | light breeze |
| 18 | 12 | light breeze |
| 19 | 12 | light breeze |
| 20 | 12 | light breeze |
| 21 | 12 | light breeze |
| 22 | 12 | light breeze |
| 23 | 12 | light breeze |
| 24 | 12 | light breeze |
| 25 | 12 | light breeze |
| 26 | 12 | light breeze |
| 27 | 12 | light breeze |
| 28 | 12 | light breeze |
| 29 | 12 | light breeze |
| 30 | 12 | light breeze |
| 31 | 12 | light breeze |
Sunrise & sunset in October
Daylight runs from about 11 h 48 min at the start of October to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 36 minutes over October. Sunrise moves from 6:26 AM to 6:38 AM, and sunset from 6:14 PM to 5:51 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.4 | 11.4 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.2 | 11.2 |
| Sunrise (AM) | 6:26 | 6:26 | 6:26 | 6:27 | 6:27 | 6:27 | 6:28 | 6:28 | 6:28 | 6:29 | 6:29 | 6:29 | 6:30 | 6:30 | 6:31 | 6:31 | 6:31 | 6:32 | 6:32 | 6:33 | 6:33 | 6:34 | 6:34 | 6:35 | 6:35 | 6:36 | 6:36 | 6:36 | 6:37 | 6:38 | 6:38 |
| Sunset (PM) | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:09 | 6:09 | 6:08 | 6:07 | 6:06 | 6:05 | 6:04 | 6:03 | 6:03 | 6:02 | 6:01 | 6:00 | 5:59 | 5:59 | 5:58 | 5:57 | 5:57 | 5:56 | 5:55 | 5:54 | 5:54 | 5:53 | 5:53 | 5:52 | 5:52 | 5:51 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.8 | 6:26 | 6:14 |
| 2 | 11.8 | 6:26 | 6:13 |
| 3 | 11.8 | 6:26 | 6:12 |
| 4 | 11.7 | 6:27 | 6:11 |
| 5 | 11.7 | 6:27 | 6:10 |
| 6 | 11.7 | 6:27 | 6:09 |
| 7 | 11.7 | 6:28 | 6:09 |
| 8 | 11.7 | 6:28 | 6:08 |
| 9 | 11.6 | 6:28 | 6:07 |
| 10 | 11.6 | 6:29 | 6:06 |
| 11 | 11.6 | 6:29 | 6:05 |
| 12 | 11.6 | 6:29 | 6:04 |
| 13 | 11.6 | 6:30 | 6:03 |
| 14 | 11.5 | 6:30 | 6:03 |
| 15 | 11.5 | 6:31 | 6:02 |
| 16 | 11.5 | 6:31 | 6:01 |
| 17 | 11.5 | 6:31 | 6:00 |
| 18 | 11.5 | 6:32 | 5:59 |
| 19 | 11.4 | 6:32 | 5:59 |
| 20 | 11.4 | 6:33 | 5:58 |
| 21 | 11.4 | 6:33 | 5:57 |
| 22 | 11.4 | 6:34 | 5:57 |
| 23 | 11.4 | 6:34 | 5:56 |
| 24 | 11.3 | 6:35 | 5:55 |
| 25 | 11.3 | 6:35 | 5:54 |
| 26 | 11.3 | 6:36 | 5:54 |
| 27 | 11.3 | 6:36 | 5:53 |
| 28 | 11.3 | 6:36 | 5:53 |
| 29 | 11.3 | 6:37 | 5:52 |
| 30 | 11.2 | 6:38 | 5:52 |
| 31 | 11.2 | 6:38 | 5:51 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 5.46 kWh/m².
For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 7.18 kWh/m² in June across the year — October's 5.46 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.0 | Bright |
| 2 | 5.9 | Bright |
| 3 | 5.9 | Bright |
| 4 | 5.9 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.7 | Bright |
| 9 | 5.7 | Bright |
| 10 | 5.7 | Bright |
| 11 | 5.6 | Bright |
| 12 | 5.6 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.5 | Bright |
| 16 | 5.5 | Bright |
| 17 | 5.4 | Bright |
| 18 | 5.4 | Bright |
| 19 | 5.4 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.3 | Bright |
| 22 | 5.3 | Bright |
| 23 | 5.2 | Bright |
| 24 | 5.2 | Bright |
| 25 | 5.2 | Bright |
| 26 | 5.1 | Bright |
| 27 | 5.1 | Bright |
| 28 | 5.1 | Bright |
| 29 | 5.0 | Bright |
| 30 | 5.0 | Bright |
| 31 | 5.0 | Bright |
Hazard calendar for Kailua
In October, Kailua sits inside its pacific hurricane season. The full year is below, with each hazard's peak months called out.
Kailua sits in the eastern Pacific hurricane zone; the season peaks August–September.
Is October a good time to visit Kailua?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a reasonable time to visit Kailua for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Kailua in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Kailua sees daytime highs around 80°F and nights near 74°F. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.
Sea temperature near Kailua in October
The nearest coast averages about 80°F in October — 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) | 76 | 75 | 75 | 76 | 77 | 78 | 79 | 80 | 80 | 80 | 79 | 77 |
| Comfort | Warm | Refreshing | Refreshing | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 76 | Warm |
| Feb | 75 | Refreshing |
| Mar | 75 | Refreshing |
| Apr | 76 | Warm |
| May | 77 | Warm |
| Jun | 78 | Warm |
| Jul | 79 | Warm |
| Aug | 80 | Warm |
| Sep | 80 | Warm |
| Oct | 80 | Warm |
| Nov | 79 | Warm |
| Dec | 77 | Warm |
UV index in Kailua in October
Clear-sky midday UV in October peaks 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 Kailua peaks around July 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 | 8 | 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 | 8 | 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 Kailua?
Kailua sits at 21.4°N, 157.7°W, 33 ft above sea level, in United States. The nearest listed city is Kaneohe, 3.7 mi away.
Topography around Kailua
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Kailua.
Within 2 miles, the terrain around Kailua has only modest variations in elevation — a maximum elevation change of 545 ft around an average of 39 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,117 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 3,983 ft.
The land around Kailua is covered by water (33%) and artificial surfaces (26%) within 2 miles, water (56%) and trees (27%) within 10 miles, and water (86%) 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 Kailua (21.4024°, -157.7405°, elevation 33 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).