Honolulu Weather in August
Honolulu in August sees high temperatures, with highs around 29°C (84°F) and overnight lows of 24°C (75°F). Overall perfect conditions make it one of the better months to visit.
Rainfall in Honolulu in August
Looking at the last 30 years, the data shows about 8 days with rain, averaging 23 mm (0.9 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Honolulu in August
The perfect temperature in Honolulu in August makes it a solid month to visit, with 29°C (84°F) during the day and 24°C (75°F) at night. This kind of day-to-night contrast is typical for this time of year. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.
Sunshine in Honolulu in August
Expect sunny days throughout the month, with an estimated 303 hours of sunshine. This makes it a pleasant time to visit Honolulu.
Wind Speed in Honolulu in August
August has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.
Average water temperature in August
At 27°C (81°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.For additional travel inspiration, our weather planner can help you discover destinations worldwide.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Honolulu's climate page.
Honolulu Temperature in August
Min Temperature
24°C (75°F)
Max Temperature
29°C (84°F)
Water Temperature
27°C (81°F)
Chance of Rain
26%
Precipitation
23 mm (0.9 in)
Rainy days
8 days
Humidity
64%
Windspeed
5 m/s (10 knots)
Sunshine
303 hours
Percentage Sunshine
76%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Honolulu typically stay consistent throughout August, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Honolulu in August
Browse day-by-day weather records for Honolulu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Honolulu historical weather extremes in August
Based on 49 years of weather observations in Honolulu between 1976 and 2025, these are the recorded extremes.
- Honolulu recorded its highest August temperature of 34°C (93°F) on August 31, 2019.
- The coldest August day was on August 8, 1978, with a maximum of 26°C (79°F).
- The coldest night in August in Honolulu was on August 9, 1984, with a minimum of 19°C (66°F).
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
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What to Wear in Honolulu in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers. The water temperature sits at about 27°C (81°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Honolulu in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Honolulu's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Honolulu climate overview or explore weather in the United States of America.
