Honolulu Weather in September

What September feels like in Honolulu

In the tropics the calendar matters less: Honolulu is warm all year round. Afternoons are hot, so sightseeing works best in the morning or evening. The gap between afternoon and night is small, so nights stay warm and the temperature hardly changes after dark. Some humidity hangs in the air, noticeable when the sun is strong.

Rain in Honolulu in September

Wet days are occasional rather than regular, about one day in 4. When it rains, it is usually light: about 3.1 mm (0.1 in) per rainy day, more drizzle than downpour. That is lighter than the city's yearly norm of about 4.6 mm per rainy day. It is among the three driest months of the year.

Daylight and sunshine in September

On 15 September the sun rises at about 6:18 am and sets around 6:36 pm local time, giving 12 h 18 min of daylight. Compared with mid-August, the day has lost 35 min. About 94% of daylight hours are sunny; in short, skies are mostly clear.

How September compares to the rest of the year

In Honolulu's temperature order, September sits as the warmest month. It is about as warm as August, with 6 mm less rain. Temperatures barely move from one month to the next here. By October, typical highs are 27.9°C (82.2°F).

Who September suits

• Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
• Parks & outdoor: less ideal — afternoons are too warm to linger outside.
• Beach: less ideal — too many rainy days.
• Hiking: less ideal — too hot for long hikes.

Tips for visiting Honolulu in September

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