Honolulu Weather in October

🇺🇸 United States

29°C

High

22°C

Low

Rain Days

Sunshine

78%

Humidity

North America › 🇺🇸 United States › Honolulu

Updated: March 2026

Is October a Good Time to Visit Honolulu?

2/10

Avoid

October is a avoid time to visit Honolulu (2/10). Average highs of 29°C and 3 sunshine hours daily make conditions workable, though not exceptional. October suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 9 potential rain days. November offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Honolulu's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.

vs September:30°C avg high

Honolulu's October climate peaks at 29°C each afternoon before cooling to 22°C overnight. 3 daily sunshine hours and just 9 wet days mean the odds of a fine day are solidly in your favour. It is a reasonable time to visit, with a backup plan for the occasional shower.

29°C

Avg High

22°C

Avg Low

9 days

Rain Days

Sunshine

78%

Humidity

Temperature in Honolulu in October

The 7°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 78% humidity, the 29°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 15 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 84°F average high, 72°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in October

Monthly Precipitation (mm)

What to Wear in Honolulu in October

Morning22°CBefore the day warms up

Afternoon29°CPeak daytime temperature

Evening25°CAfter sunset cools down

Packing for Honolulu in October means dressing for 29°C days and 22°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 29°C daytime heat. Evening temperatures settle at 22°C, a modest 7°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. A compact foldable umbrella weighs almost nothing and earns its keep across 9 potential rainy days. At 78% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.

💡

Local tip: Layers are more practical than a single heavy garment in Honolulu. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.

Events in Honolulu in October

October has no major festivals or public holidays in Honolulu, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.

What to Pack for Honolulu in October

Based on 29°C average highs and 9 rainy days

Light layers for morning and evening
Breathable T-shirts and comfortable trousers
UV-protective sunglasses
Quick-dry travel towel
Anti-chafe balm for long walking days
Moisture-wicking synthetic fabrics for active days
Compact folding umbrella
Waterproof outer layer or packable rain jacket
Quick-dry clothing that recovers fast after a shower
SPF 30+ sunscreen
Comfortable walking shoes (a second pair lets the first air out overnight)
Universal travel adapter
Small day pack for city exploration
Reusable water bottle

Best Activities in Honolulu in October

Early morning walk through Honolulu's historic market districtBest before 9amTemperatures are still manageable at 25°C before the midday heat builds
Open-air rooftop dining at sunsetFrom 6pm onwardsThe 29°C daytime heat drops noticeably after sunset, making al fresco dining comfortable
Waterfront promenade or harbour walkEarly morning or after 5pmSea breezes cut through the humidity, making coastal routes the most pleasant in heat
Guided cycling tour of the old quarterFirst tour of the day (7-9am)The low-traffic window before tourist crowds and the cooler morning air make this the prime riding slot
Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningOctober brings distinct seasonal changes to public green spaces worth exploring
Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in October, with vendors setting up specifically for warm evenings

Why is Honolulu warm in October?

In October, Honolulu sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 29°C, with lower humidity than the wet months. Overnight lows of 22°C offer a pleasant reprieve from the midday heat. Climate data: Open-Meteo ERA5 (1991–2020).

Sunshine Hours

The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.

UV Index

A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.

Rain Days

A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.

Humidity

Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.

Frequently Asked Questions: Honolulu in October

In October, Honolulu experiences average highs of 29°C (84°F) and lows of 22°C (72°F). Expect around 9 rainy days and 3 hours of sunshine per day, with humidity averaging 78%. The 7°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 6, so sun protection is advisable on clear days.

Honolulu typically sees 9 rainy days in October, with total precipitation of around 105mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Honolulu typically sees 4-6 fewer rain days than October.

Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Honolulu in October. The 29°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. A compact travel umbrella is also worth packing, as 9 rainy days means afternoon showers are a real possibility. Quick-dry synthetic fabrics are preferable to cotton in 78% humidity.

October is a reasonable time to visit Honolulu. Expect 9 rainy days, so pack a light rain layer for flexibility. Average temperatures of 29°C make outdoor exploration comfortable during the dry periods. With 3 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.

The average high temperature in Honolulu in October is 29°C (84°F), and the average low is 22°C (72°F). The mean daily temperature is approximately 26°C (78°F). The day-to-night range of 7°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.

The best month to visit Honolulu is generally February. February offers the most sunshine at 3 hours per day and only 9 rainy days. Average temperatures reach 29°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around February gives you the best chance of dry, bright weather.

October is shoulder or low season in Honolulu, meaning fewer tourists and generally lower prices than peak months. With 3 sunshine hours and 9 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.

In October, Honolulu suits a range of activities thanks to warm temperatures of 29°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. Cosy cafes and cultural venues make ideal retreats on overcast days.

October ranks 9th sunniest of the year in Honolulu, with an average 3 daily sunshine hours. The driest months are December, January, and November. May is the hottest month (32°C avg high); January is the coolest (28°C). From here, temperatures fall 1°C into November. Compared to last month (September: 30°C high, 12 rain days), October is cooler and drier. October sits in the middle of the annual sunshine ranking for Honolulu, offering a reasonable balance of good weather and manageable crowds.

Year-Round Climate

Month	High	Low	Rain Days	Sun	Details
January	28°C	21°C	7	1h	View
February	29°C	22°C	9	3h	View
March	30°C	23°C	12	4h	View
April	31°C	24°C	15	6h	View
May	32°C	25°C	17	7h	View
June	32°C	25°C	18	7h	View
July	32°C	25°C	17	7h	View
August	31°C	24°C	15	6h	View
September	30°C	23°C	12	4h	View
October	29°C	22°C	9	3h	View
November	28°C	21°C	7	1h	View
December	28°C	21°C	6	1h	View

Other Months in Honolulu

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Plan Your Trip to Honolulu

Best Time to Visit Honolulu

Data Sources for Honolulu

Honolulu on Wikipedia Open-Meteo Climate API NOAA National Centers UK Met Office WMO GeoNames

Climate normals represent 30-year averages (1991-2020). Individual years may vary.