September weather forecast
Waimea Canyon State Park, HI

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Weather in September

September signals a gradual transition towards autumn accompanied by falling daylight hours and increased sea temperatures. In this month, the highest sea temperature of 80.5°F (26.9°C) is noted, at the tail end of the summer. A decrease in daylight marks this transition, with an average of 12.3 hours noted. The weather progression towards cooler climes and shorter days will continue into the next month. However, September's weather stays steady, not displaying strikingly unique or erratic weather conditions.

Ocean temperature

With an average ocean temperature of 80.4°F (26.9°C), September is the month with the warmest seawater in Waimea Canyon State Park, Hawaii.
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.

Daylight

In Waimea Canyon State Park, Hawaii, the average length of the day in September is 12h and 16min.
On the first day of September in Waimea Canyon State Park, sunrise is at 6:21 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 6:26 pm HST.
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Frequently asked questions

What is the month with the warmest ocean in Waimea Canyon State Park?

The month with the warmest seawater is September, with an average ocean temperature of 80.4°F (26.9°C).

What is the ocean temperature in September in Waimea Canyon State Park?

In September, the average ocean temperature in Waimea Canyon State Park, Hawaii, is 80.4°F (26.9°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Waimea Canyon State Park have in September?

In September, the average day length is 12h and 16min.

When are sunrise and sunset in September in Waimea Canyon State Park?

On the first day of September in Waimea Canyon State Park, sunrise is at 6:21 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 6:26 pm HST.

Average sea temperature in September
Waimea Canyon State Park, HI

Average sea temperature in September - Waimea Canyon State Park, HI
  • Average sea temperature in September: 80.5°F

The best month for swimming (with the highest average sea temperature) is September (80.5°F).
The coldest month (with the lowest average sea temperature) is March (75.4°F).

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Average daylight in September
Waimea Canyon State Park, HI

Average daylight in September - Waimea Canyon State Park, HI
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

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Waimea Canyon State Park, Hawaii, USA

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