August · United States
Best time to visit Honolulu in August Weather, crowds & prices
Weather in Honolulu in August
Average temperature 27°C, 29 mm of rain, about 31 days with 6+ hours of sunshine and 73% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
9.9/10
Ranked #2 of 12 months
- Avg temp
- 27°C
- Rainfall
- 29 mm
- Humidity
- 73%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Honolulu scores 9.9/10 for beach and coastal travel - one of the top 12-month picks (#2). Expect around 27°C, 29 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Honolulu pairs Waikiki's sheltered surf with Diamond Head, Pearl Harbor, and a compact, walkable downtown.
August ranks 2nd of 12 for Honolulu — one of the best windows
August averages 27°C (80°F) and humidity near 73%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Expect 29 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 12.7 daylight hours.
A 9.9/10 puts this among the year's best months in Honolulu (2nd of 12); only July scores higher, at 9.9/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Honolulu in August?
- In August, Honolulu averages 27°C, 29 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.9/10.
- Is August a good time to visit Honolulu?
- August earns a 9.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Honolulu in August?
- Expect about 29 mm of rain in August. Average humidity is 73% and there are about 31 days with 6+ hours of sunshine.
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