The best times to visit Hilo for ideal weather are
December 10th to April 22nd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Hilo Travel Guide
Other Hilo Travel Info
Weather in Hilo
Average temperatures in Hilo vary very little. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a chance of rain throughout most of the year. The area is less temperate than some — in the 35th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Hilo, the hottest months are August, September, and then July. See average monthly temperatures below. The warmest time of year is generally mid to late August where highs are regularly around 85.6°F (29.8°C) with temperatures rarely dropping below 69.2°F (20.7°C) at night.
Hilo Temperatures (Fahrenheit)
Hilo Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Hilo Perceived Temperature (F)
Hilo Perceived Temperature (C)
Average Hilo Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Hilo are January, May, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid January. For example, on the week of January 15th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid July with an average of 5 days of significant precipitation the week of July 16th.
When can you find snow in Hilo? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Hilo.
Snow on the Ground
The graph below shows the average snow on the ground in Hilo (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Hilo has some very humid months, and above average humidity throughout the year. The least humid month is January (67.6% relative humidity), and the most humid month is November (73.6%).
Wind in Hilo is usually calm. The windiest month is April, followed by February and March. April’s average wind speed of around 5.7 knots (6.6 MPH or 10.6 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January and early February where average top sustained speeds reach 13.9 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Hilo.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.6||Light breeze||12.2||Significant breeze|
|Feb||5.7||Light breeze||12.8||Significant breeze|
|Mar||5.7||Light breeze||12.4||Significant breeze|
|Apr||5.7||Light breeze||12.6||Significant breeze|
|May||5.5||Light breeze||12.1||Significant breeze|
|Jun||5.3||Light breeze||11.8||Significant breeze|
|Jul||5.2||Light breeze||11.1||Significant breeze|
|Aug||5.2||Light breeze||11.1||Significant breeze|
|Sep||5.2||Light breeze||11.2||Significant breeze|
|Oct||5.1||Light breeze||10.8||Gentle breeze|
|Nov||5.1||Light breeze||11||Significant breeze|
|Dec||5.2||Light breeze||11.7||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Hilo?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Hilo, HI, US is July, followed by March and February. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Hilo in June. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Hilo Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 83.2°F (28.4°C) and 79.6°F (26.4°C) with warmer temperatures in the later months. Rain is frequent with 12 to 16 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the most precipitation with about 16 days of precipitation per month. June – August is fairly slow season for tourism in Hilo, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 85.6°F (29.8°C) and 81.6°F (27.6°C), which will feel very nice given the humidity and wind. It rains or snows a great amount: 14 to 17 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is perfect this time of year in Hilo to be enjoyable for warm weather travelers. The average high during this season is between 81.3°F (27.4°C) and 79.6°F (26.4°C). On average, it rains or snows a great amount: 9 to 16 times per month. These times of year are the busiest with tourists.