Honolulu

Oahu Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Oahu, the United States of America in September.

Planning a trip to Oahu, the United States of America this September? Here's what you need to know about the weather:

What to Expect in Oahu in September

Oahu, the United States of America is a region in the United States of America. September in Oahu generally has warm temperatures, with precipitation levels ranging from low to moderate.

Temperatures

You can expect warm maximum daytime temperatures of around 29°C (84°F) and nighttime temperatures around 24°C (75°F) in Honolulu. On average, September is the warmest month of the year in Oahu, the United States of America. So be prepared and pack summer clothes.

For a closer look at conditions across Oahu, the United States of America, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From low rainfall in Kapolei with an average of 19 mm (0.7 in) to moderate rainfall in Laie with 33 mm (1.3 in).

Average sunshine

Many locations offer abundant sunshine during this month. For instance, Honolulu enjoys approximately 279 hours of sunlight, ideal for those seeking sunny weather.

Explore Oahu by month

Pick a month to see the average temperature, rainfall and sunshine in Oahu — and find the best time to visit. (based on Honolulu)

Best Places to Visit in Oahu in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Oahu.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Oahu

What is the weather like in September for some of the most popular destinations in Oahu, the United States of America?

Temperature range in Oahu (September)

Precipitation variation in Oahu (September)

Honolulu

In September Honolulu generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 24°C (75°F) and low monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
29°C (84°F)
29°C (84°F)
28°C (82°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
303 hours
279 hours
244 hours
Monthly rainfall
23 mm (0.9 in)
24 mm (0.9 in)
34 mm (1.3 in)
Monthly rainy days
8 days
9 days
10 days
Weather conditions

Kahuku

In September Kahuku generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 24°C (75°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
28°C (82°F)
28°C (82°F)
28°C (82°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
303 hours
279 hours
244 hours
Monthly rainfall
34 mm (1.3 in)
33 mm (1.3 in)
45 mm (1.8 in)
Monthly rainy days
9 days
9 days
11 days
Weather conditions

Kapolei

In September Kapolei generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 25°C (77°F) and low monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
28°C (82°F)
28°C (82°F)
28°C (82°F)
Min temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Monthly sun hours
303 hours
279 hours
244 hours
Monthly rainfall
18 mm (0.7 in)
19 mm (0.7 in)
30 mm (1.2 in)
Monthly rainy days
8 days
9 days
10 days
Weather conditions

Laie

In September Laie generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 24°C (75°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
28°C (82°F)
28°C (82°F)
28°C (82°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
303 hours
279 hours
244 hours
Monthly rainfall
34 mm (1.3 in)
33 mm (1.3 in)
45 mm (1.8 in)
Monthly rainy days
9 days
9 days
11 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Oahu, in the United States of America.

Popular cities in September

Day & night temperatures, rainfall and average weather in Oahu in September.

City Weather Day temp Night temp Rainfall
Honolulu 29°C (84°F) 24°C (75°F) 24 mm (0.9 in)
Kahuku 28°C (82°F) 24°C (75°F) 33 mm (1.3 in)
Kapolei 28°C (82°F) 25°C (77°F) 19 mm (0.7 in)
Laie 28°C (82°F) 24°C (75°F) 33 mm (1.3 in)

Oahu weather in September: frequently asked questions

What is the weather like in Oahu, the United States of America in September?

Expect perfect weather across Oahu, the United States of America in September. The popular destination of Honolulu averages 29°C (84°F) by day and 24°C (75°F) at night during this month.

What is the average temperature in Oahu, the United States of America in September?

In Honolulu, the average daytime high in September is 29°C (84°F), while nighttime temperatures drop to around 24°C (75°F).

Does Oahu, the United States of America get a lot of rain in September?

Rain is generally moderate to light in Oahu, the United States of America during September, with Honolulu averaging close to 24 mm (0.9 in).

Is September a Good Time to Visit Oahu, the United States of America?

In our opinion, September is a good time to visit Oahu, the United States of America with overall perfect weather in Honolulu. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in offering mostly perfect weather in Honolulu.

Interested in more climate information?

We have much more information about the climate in Oahu.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.