Hanalei Bay Climate and Average Weather
Climate of Hanalei Bay: average temperatures, rainfall and seasons month by month.
Climate in Hanalei Bay month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 77° | 67° | 7,0 in | ★★★☆☆ |
| February | 76° | 66° | 7,9 in | ★★★☆☆ |
| March | 76° | 68° | 10,5 in | ★★☆☆☆ |
| April | 77° | 69° | 13,7 in | ★★★☆☆ |
| May | 78° | 70° | 10,9 in | ★★★☆☆ |
| June | 80° | 71° | 8,2 in | ★★★☆☆ |
| July | 80° | 72° | 10,5 in | ★★★☆☆ |
| August | 82° | 73° | 4,2 in | ★★★★☆ |
| September | 82° | 73° | 5,9 in | ★★★☆☆ |
| October | 81° | 72° | 5,7 in | ★★★☆☆ |
| November | 79° | 71° | 7,7 in | ★★★☆☆ |
| December | 78° | 69° | 8,9 in | ★★★☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in Hanalei Bay
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Hanalei Bay compares with nearby places
Annual averages, and the difference against Hanalei Bay.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Kauai County | 8 mi | 64°F | 41°F cooler | 121 in |
| Oahu | 110 mi | 73°F | about the same | 31 in |
| Pearl Harbor National Memorial | 115 mi | 76°F | +35°F warmer | 27 in |
| Daniel K. Inouye International Airport | 118 mi | 75°F | +33°F warmer | 27 in |
| Honolulu County | 122 mi | 75°F | +33°F warmer | 27 in |
Best time to visit Hanalei Bay
Go in August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: March, April and December - expect the least comfortable mix of heat, cold or rain.
What this means for Hanalei Bay
Today is about average for August. The forecast high of 82°F is in line with the 82°F typical for this month.
A 90% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,7 in is forecast, which is enough to soak trails and slow traffic.
Visibility is down to 0,2 mi - use low beams and leave extra following distance. Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 38°F - an unusually even climate through the year.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- Avoid swimming outside patrolled areas - waves are running at 1.7 m.
- If your dates are flexible, avoid March, April and December - historically the least comfortable months here.
Summary
Hanalei Bay is a beach in Kauai. Hanalei Bay is a beach known for a mountain-backed crescent bay.
Right now it is 76°F (25°C) in Hanalei Bay with light showers. It feels like 85°F. Today runs from 75°F to 82°F. Chance of precipitation is 90%. Sightseeing conditions score 4.9/10 - marginal.
The best time to visit Hanalei Bay is August. The climate is temperate. March, April and December tend to be the least comfortable months. August is the warmest month with average highs near 82°F, while February is the coldest with lows near 66°F.
The closest major airport is Daniel K. Inouye International Airport (HNL), about 118 mi away. Nearby highlights include Oahu, Pearl Harbor National Memorial, Waikiki Beach and Maui.
In plain terms. Today is about average for August. The forecast high of 82°F is in line with the 82°F typical for this month. The best window to be outside is roughly 6 PM to 9 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Hanalei Bay today at 9.3/10. Visibility is down to 0,2 mi - use low beams and leave extra following distance. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Hanalei Bay
| Type | Beach |
|---|---|
| Island | Kauai |
| Country | United States |
| Continent | North America |
| Coordinates | 22°12′13″N 159°30′4″W (22.2036, -159.5011) |
| Known for | a mountain-backed crescent bay |
| Local time | 6:28 AM (UTC-10:00) |
| Best months | August |
| Climate | Temperate |
Weather map for Hanalei Bay
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Hanalei Bay
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Hanalei Bay?
Hanalei Bay is a beach in Kauai. Its coordinates are 22.2036, -159.5011. It lies in North America.
What is the weather like in Hanalei Bay right now?
It is currently 76°F (25°C) with light showers. Humidity is 99% and wind is 7 mph.
When is the best time to visit Hanalei Bay?
August offer the most comfortable conditions in Hanalei Bay, which has a temperate climate. March, April and December are usually the hardest months for outdoor plans.
What time zone is Hanalei Bay in?
Hanalei Bay observes Pacific/Honolulu (UTC-10:00). The local time is 6:28 AM.
What is the nearest airport to Hanalei Bay?
The closest airports are Daniel K. Inouye International Airport (HNL), 118 mi away.
What are the top things to do in Hanalei Bay?
Popular options include Oahu, Pearl Harbor National Memorial, Waikiki Beach, Maui, Haleakala National Park and Road to Hana.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (beaches) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 24, 2026 at 6:28 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
