Avg High
Honolulu in August
Verdict
In Honolulu, August has a distinct summer feel. As the season moves along, conditions remain fairly consistent. You can usually expect a warm month that feels variable day to day. Breezes can be part of the character, especially in exposed spots.
It suits travellers who want straightforward weather for sightseeing and day trips. Sun exposure can add up quickly around the middle of the day.
Avg Low
Rain
Daylight
13h
What to expect
- Temperature feel - Heat-forward afternoons that stay fairly consistent through the day. Direct sun can push it into “hotter than expected” territory.
- Wet weather - Mostly rain-free. It’s often more stop-start than all-day. You’ll want a proper rain setup rather than a ‘just in case’.
- Midday sun - Very high UV is common. Outdoor time is best in the morning or late afternoon. It's the kind of sun you notice immediately.
- Exposure - Blustery at times, and expect sharp gusts that can change plans in exposed areas. Sheltered streets can feel fine, but open areas feel very different.
August in context
How it compares to the rest of the year in Honolulu.
Hottest (avg)
#2 / 12
Wettest (avg)
#9 / 12
Daylight Hours
#4 / 12
Windiest (avg)
#3 / 12
Highest UV
#1 / 12
Most Humid
#7 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 12.8 hours
- UV index (max)
- 9
- Typical sun hours
- 06:09 – 18:59
Rain & Snow
- Total
-
- Rainy days
- 13
- Cloud cover
- 42%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 73%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is August a good time to visit Honolulu?
Typical August days in Honolulu reach highs of 28°C (82°F) with nights around 24°C (75°F). It usually feels hot by day and warm after dark. Overall, August sits in the middle of the Honolulu climate range.
What are temperatures like in August?
Daytime temperatures in August typically peak near 28°C (82°F), while nights drop to around 24°C (75°F). Expect hot afternoons and warm evenings.
How much does it rain in August?
Rainfall in August averages 25 mm (0.98 in) across roughly 13 days. Overall it is a quite rainy time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in August?
You can expect about 13 hours of daylight in August. Sunrise is typically around 06:09 and sunset near 18:59. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in August?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in August?
In August, average wind speeds are around 19 km/h (12 mph), with gusts on the windiest days reaching about 59 km/h (37 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.