AI-generatedKailua-Kona, Hawaii at a glance
- Best time
- Apr – Nov
- Warmest month
- Aug · 25°
- Warmest sea
- Sep · 27.2°
- Sunshine a year
- 2,830 h
- Rain a year
- 2,352 mm
- Climate
- Subtropical
- Time zone
- UTC−10
- Elevation
- 16 m
Climate in Kailua-Kona, Hawaii
Kailua-Kona, Hawaii has a subtropical climate with warm summers and mild winters. August is the warmest month with average highs of 25 °C, while February is the coolest at 23 °C. With around 2,830 hours of sunshine a year, Kailua-Kona, Hawaii is sunny; July is the sunniest month with 9.0 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: April – November
October is in the hurricane season
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 22°
- Midday, 13:00: about 25°
- Afternoon, 16:00: about 25°
- Evening, 20:00: about 22°
- Night, 23:00: about 21°
06:1818:01
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:04–06:47 · evening 17:32–18:15
- Blue hour
- Morning 05:56–06:04 · evening 18:15–18:23
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Kailua-Kona, Hawaii in October?
In October, Kailua-Kona, Hawaii is warm: daytime highs average 25 °C, and nights cool down to about 20 °C. The sea averages 27.1 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It rains often – on about 26 days, adding up to 180 mm. All in all, October is a good month for a holiday in Kailua-Kona, Hawaii.
More details for October
- Daylight
- 11 h 44 min06:18 – 18:01
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 14 daysdew point 18 °C or moreAll months
- Wind
- 9 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %98 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Sea temperature in Kailua-Kona, Hawaii
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 26.3 – 27.9 °C
Swimming season: All year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Kailua-Kona, Hawaii ranges from 24.7 °C in March to 27.2 °C in September. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in September, while the air already peaks in August. The sea temperature varies from year to year: in September, eight out of ten years were between 26.4 and 28.1 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 25.1° | 24.5° | 25.6° | pleasant |
| FebruaryFeb | 24.8° | 24.2° | 25.5° | pleasant |
| MarchMar | 24.7° | 24.1° | 25.4° | pleasant |
| AprilApr | 25.1° | 24.2° | 25.9° | pleasant |
| MayMay | 25.6° | 24.9° | 26.3° | pleasant |
| JuneJun | 26.1° | 25.1° | 26.8° | warm |
| JulyJul | 26.6° | 25.7° | 27.3° | warm |
| AugustAug | 27.1° | 26.1° | 27.9° | warm |
| SeptemberSep | 27.2° | 26.4° | 28.1° | warm |
| OctoberOct | 27.1° | 26.3° | 27.9° | warm |
| NovemberNov | 26.5° | 25.7° | 27.2° | warm |
| DecemberDec | 25.7° | 25.0° | 26.3° | pleasant |
Sunshine hours in Kailua-Kona, Hawaii
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 7.8 of 11.7 hours of daylight in Kailua-Kona, Hawaii, 67 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Kailua-Kona, Hawaii
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 9 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in May (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 20 min
- Light brown skin
- about 25 min
- Olive skin
- about 30 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Kailua-Kona, Hawaii: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Kailua-Kona, Hawaii has about 26 rainy days with 180 mm of rain in total.
Wind and clouds in Kailua-Kona, Hawaii
How breezy and how cloudy Kailua-Kona, Hawaii is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Kailua-Kona, Hawaii typically peaks at 9 km/h during the day: Beaufort 2, light air.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 56 % of the sky over Kailua-Kona, Hawaii: variable cloud, with about 7.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Kailua-Kona, Hawaii
How often the day gets hot in Kailua-Kona, Hawaii (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Kailua-Kona, Hawaii has about 0 hot days, with an average daytime high of 25 °C: some hot or muggy days. Single hot or muggy days are possible; a hat and water bottle are enough.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Kailua-Kona, Hawaii
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Pleasant 15–20°
- Warm 20–24°
- muggy month (10+ muggy days)
WarmOctober: nights around 20°. Tropical nights: a fan or air conditioning helps. Muggy on about 14 days (dew point 18 °C or more).
The coolest nights are in February (17°), the warmest in August (20°). Tropical nights of 20 °C and more are the rule from July to October; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from November to June. It is muggy (dew point 18 °C or more) on about 98 days a year, mostly from June to October.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 62 | 23° | 18° | 25.1° | 7.3 h | 19 | 109 |
| FebruaryFeb | 59 | 23° | 17° | 24.8° | 7.0 h | 20 | 124 |
| MarchMar | 61 | 23° | 18° | 24.7° | 7.0 h | 23 | 155 |
| AprilApr | 65 | 23° | 18° | 25.1° | 7.6 h | 26 | 210 |
| MayMay | 70 | 24° | 19° | 25.6° | 8.1 h | 29 | 244 |
| JuneJun | 76 | 24° | 19° | 26.1° | 8.8 h | 29 | 273 |
| JulyJul | 80 | 25° | 20° | 26.6° | 9.0 h | 29 | 259 |
| AugustAug | 78 | 25° | 20° | 27.1° | 8.4 h | 29 | 285 |
| SeptemberSep | 76 | 25° | 20° | 27.2° | 7.9 h | 29 | 234 |
| OctoberOct | 75 | 25° | 20° | 27.1° | 7.8 h | 26 | 180 |
| NovemberNov | 70 | 24° | 19° | 26.5° | 7.1 h | 21 | 143 |
| DecemberDec | 63 | 23° | 18° | 25.7° | 7.0 h | 21 | 136 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
19.64° N, 156.00° W · 16 m · Pacific/Honolulu
Best time to visit Kailua-Kona, Hawaii
The best time to visit Kailua-Kona, Hawaii is from April to November. The sea stays too cool for a classic beach holiday: even in September it only reaches 27.2 °C. The wettest month is August with 285 mm of precipitation.
Kailua-Kona, Hawaii through the seasons
How the weather changes over the seasons, with averages for each.
Kailua-Kona, Hawaii in spring
Mar – May
Good
- 23–24 °C by day
- Sea 25 °C
- 8 h of sun a day
- 78 rainy days in all
Kailua-Kona, Hawaii in summer
Jun – Aug
Good
- 24–25 °C by day
- Sea 27 °C
- 9 h of sun a day
- 88 rainy days in all
Kailua-Kona, Hawaii in autumn
Sep – Nov
Good
- 24–25 °C by day
- Sea 27 °C
- 8 h of sun a day
- 76 rainy days in all
Kailua-Kona, Hawaii in winter
Dec – Feb
Good
- 23 °C by day
- Sea 25 °C
- 7 h of sun a day
- 61 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Kailua-Kona, Hawaii for you.
Your best months: July – September
Based on the climate averages; tap a month to see its details.
Compare two months in Kailua-Kona, Hawaii
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Kailua-Kona, Hawaii: score 80 against 75. Daytime highs are about the same. The sea is about as warm in both months. July has 3 more rainy days. The sun shines an hour longer a day in July.
| Month | October | July |
|---|---|---|
| Weather score | 75 | 80better |
| Day high | 25° | 25° |
| Night low | 20° | 20° |
| Sea | 27.1° | 26.6° |
| Sunshine | 7.8 h | 9.0 hbetter |
| Rainy days | 26better | 29 |
| Rainfall | 180 mmbetter | 259 mm |
| Muggy days | 14better | 20 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
All year
12 or more rainy days
Kailua-Kona, Hawaii month by month
The typical weather for every month at a glance.
62January23° · Sea 25° · 7 h
In January, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 7 hours a day. It rains often – on about 19 days, adding up to 109 mm. All in all, January is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in January59February23° · Sea 25° · 7 h
In February, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 17 °C. The sea averages 24.8 °C – pleasant for swimming. The sun shines for around 7 hours a day. It rains often – on about 20 days, adding up to 124 mm. All in all, February is a so-so month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in February61March23° · Sea 25° · 7 h
In March, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 24.7 °C – pleasant for swimming. The sun shines for around 7 hours a day. It rains often – on about 23 days, adding up to 155 mm. All in all, March is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in March65April23° · Sea 25° · 8 h
In April, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 8 hours a day. It rains often – on about 26 days, adding up to 210 mm. All in all, April is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in April70May24° · Sea 26° · 8 h
In May, Kailua-Kona, Hawaii is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 25.6 °C – pleasant for swimming. The sun shines for around 8 hours a day. It rains often – on about 29 days, adding up to 244 mm. All in all, May is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in May76June24° · Sea 26° · 9 h
In June, Kailua-Kona, Hawaii is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 26.1 °C – lovely and warm for swimming. The sun shines for around 9 hours a day. It rains often – on about 29 days, adding up to 273 mm. All in all, June is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in June80July25° · Sea 27° · 9 h
In July, Kailua-Kona, Hawaii is warm: daytime highs average 25 °C, and nights cool down to about 20 °C. The sea averages 26.6 °C – lovely and warm for swimming. With around 9 hours of sunshine a day, there is plenty of sun. It rains often – on about 29 days, adding up to 259 mm. The air is often humid and muggy. All in all, July is an excellent month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in July78August25° · Sea 27° · 8 h
In August, Kailua-Kona, Hawaii is warm: daytime highs average 25 °C, and even at night it stays warm at around 20 °C. The sea averages 27.1 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It rains often – on about 29 days, adding up to 285 mm. The air is often humid and muggy. All in all, August is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in August76September25° · Sea 27° · 8 h
In September, Kailua-Kona, Hawaii is warm: daytime highs average 25 °C, and even at night it stays warm at around 20 °C. The sea averages 27.2 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It rains often – on about 29 days, adding up to 234 mm. The air is often humid and muggy. All in all, September is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in September75October25° · Sea 27° · 8 h
In October, Kailua-Kona, Hawaii is warm: daytime highs average 25 °C, and nights cool down to about 20 °C. The sea averages 27.1 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It rains often – on about 26 days, adding up to 180 mm. All in all, October is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in October70November24° · Sea 27° · 7 h
In November, Kailua-Kona, Hawaii is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 26.5 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. It rains often – on about 21 days, adding up to 143 mm. All in all, November is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in November63December23° · Sea 26° · 7 h
In December, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 25.7 °C – pleasant for swimming. The sun shines for around 7 hours a day. It rains often – on about 21 days, adding up to 136 mm. All in all, December is a good month for a holiday in Kailua-Kona, Hawaii.
Kailua-Kona, Hawaii in DecemberKailua-Kona, Hawaii compared
Put Kailua-Kona, Hawaii side by side with another destination.
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Kailua-Kona vs. Hilo
In October the holiday weather in Kailua-Kona and Hilo is about equally good (score 75 vs. 73). During the day Hilo is 1 °C warmer than Kailua-Kona. The sea is about equally warm. Hilo gets one hour less sunshine a day.
| in October | Kailua-Kona | Hilo |
|---|---|---|
| Holiday score | 75 | 73 |
| Daytime high | 25° | 26° |
| Sea | 27° | 27° |
| Sunshine | 8 h | 7 h |
| Rainy days | 26 | 20 |
| Best time | Apr – Nov | All year |
Through the year
USA in October: the best places
In October, Kailua-Kona, Hawaii ranks 22 among the 31 nearest destinations in this country.
- Mariposa (Yosemite)23°98
- 2Long Beach25°19°98
- 3Los Angeles26°19°98
- 4Lahaina28°27°97
- 5Lanai25°27°96
- 6San Jose23°96
- 7Sacramento25°96
- 8Kihei29°27°95
- 22Kailua-KonaThis page25°27°75
Planning a trip to Kailua-Kona, Hawaii
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Kailua-Kona, Hawaii in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Kailua-Kona, Hawaii has its best school-holiday weather during the summer holidays (score 79) and its weakest during the Christmas holidays (score 63).
- 64
Easter holidays
Mar – Apr
Good
- 23 °C by day
- Sea 25 °C
- 7.4 h of sun a day
- 25 rainy days a month
Keep in mind: Frequent rain
- 71
May half-term
May – Jun
Good
- 24 °C by day
- Sea 26 °C
- 8.2 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain
- 79
Summer holidays
Jul – Aug
GoodBest holidays
- 25 °C by day
- Sea 27 °C
- 8.6 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain, Storm season
- 75
October half-term
Oct
Good
- 25 °C by day
- Sea 27 °C
- 7.8 h of sun a day
- 26 rainy days a month
Keep in mind: Frequent rain, Storm season
- 63
Christmas holidays
Dec – Jan
Good
- 23 °C by day
- Sea 25 °C
- 7.2 h of sun a day
- 20 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 14 h 40 min
- Distance
- 11,760 km
- Time zone
- UTC−10
- Jet lag
- About 7 days (11 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Kailua-Kona, Hawaii lies in an area that Central Pacific hurricanes can reach. The hurricane season runs from June to November, with most storms from August to September. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Season
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Kailua-Kona, Hawaii
When is the best time to visit Kailua-Kona, Hawaii?
The best time to visit Kailua-Kona, Hawaii is from April to November. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Kailua-Kona, Hawaii?
The sea temperature in Kailua-Kona, Hawaii ranges from 24.7 °C in March to 27.2 °C in September. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Kailua-Kona, Hawaii in October?
Yes. In October the sea averages 27.1 °C – lovely and warm for swimming.
What is the warmest month in Kailua-Kona, Hawaii?
August is the warmest month, with average highs of 25 °C and nights around 20 °C. February is the coolest month at 23 °C.
When does it rain most in Kailua-Kona, Hawaii?
The wettest month is August with 285 mm of precipitation. The driest month is January with 109 mm.
How many hours of sunshine does Kailua-Kona, Hawaii get?
Kailua-Kona, Hawaii gets around 2,830 hours of sunshine a year. The sunniest month is July with 9.0 hours a day; in February there are 7.0 hours a day.
What time zone is Kailua-Kona, Hawaii in?
Kailua-Kona, Hawaii uses the time zone Pacific/Honolulu, at UTC−10 all year.
How long is the flight from London to Kailua-Kona, Hawaii?
A nonstop flight from London to Kailua-Kona, Hawaii takes about 14 h 40 min, for a straight-line distance of about 11,760 km. Most routes need a change of planes, which adds time.
When is hurricane season in Kailua-Kona, Hawaii?
Kailua-Kona, Hawaii lies in an area that Central Pacific hurricanes can reach. The hurricane season runs from June to November, with most storms from August to September. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Kailua-Kona, Hawaii?
Kailua-Kona, Hawaii has its best school-holiday weather during the summer holidays (score 79) and its weakest during the Christmas holidays (score 63). Holiday ratings (0–100): Easter holidays 64, May half-term 71, Summer holidays 79, October half-term 75, Christmas holidays 63.
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