Maui Weather in August
Maui, Hawaii, USA
Pick your travel dates to see the odds.
August is Maui's warmest month for air temperature, with highs of 79.4°F and lows of 69.4°F, while rain holds steady at 17.3 days and humidity ticks up slightly to 74%.
Sea temperature reaches 81.6°F, within half a degree of the yearly peak and among the warmest swimming and snorkeling conditions of the year.
Statehood Day, observed in mid-August, marks Hawaii's admission to the union and is recognized with some local events, though it's a fairly quiet holiday compared to others on the calendar.
August sits within Central Pacific hurricane season; the short storm record for this island shows none observed in August, but a couple of years of data is a thin sample, so check the forecast in the days before a trip.
Summer crowds remain high through August as the last stretch of the US school-break travel window plays out; resorts and popular activities stay busy.
This is an excellent month for any water activity given the near-peak sea temperature, snorkeling, diving, and stand-up paddleboarding conditions are all at their best.
Whale watching remains unavailable this month, with the humpback population still up in Alaska for the summer feeding season.
Pack lightweight summer clothing, reef-safe sunscreen, and swim gear to make the most of the warmest water of the year.
Frequently asked questions
Is August a good time to visit Maui?
Yes for warm water and summer weather, though it's also peak crowds and the tail end of hurricane-watch season.
What's the warmest month in Maui?
August for air, with average highs of 79.4°F; the sea is near its peak at 81.6°F (September is slightly warmer).
Is there hurricane risk in Maui in August?
No storm days are recorded for August in this island's short storm record, but it's peak season, so check the forecast close to your dates.
Can you see whales in Maui in August?
No, the humpback population is in Alaska through the summer, returning in the fall.
Is Maui crowded in August?
Yes, it's the tail end of peak US summer travel season.
Weather data by Open-Meteo.com (CC BY 4.0) and the NOAA National Hurricane Center. Data updated September 2026. How we calculate.