Hilo weather in September (Hawaii, United States of America)

Curious about the September weather in Hilo? This guide provides all the details you need.

In September, Hilo generally has high temperatures and high rainfall. Throughout the day, temperatures typically settle at around 26°C. But by evening, they drop to around 20°C.

Hilo in September usually receives high rainfall, averaging around 138 mm for the month. Based on our climate data of the past 30 years, about 18 days of rain are anticipated.

The city usually sees around 160 hours of sunlight, indicating a moderately sunny period.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Hilo. January, May, June, July, August, September and October typically offer the best circumstances. While March tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Hilo climate page with graphs.

 

Hilo, monthly averages in September

Min Temperature 20°C  

Max Temperature 26°C  

Chance of Rain 59%  

Precipitation 138 mm  

Rainy days 18 days  

Humidity 78%  

Sunshine 160 hours  

Percentage Sunshine 45%  

Where to go in the United States of America in September

Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

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

So, what should you wear in Hilo in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Hilo.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find 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 climate conditions. Find out where to go with our weather planner.