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.



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)


“Feels-Like” Temperatures

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.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 80.4 70.6 63.1
Feb 80.2 70.8 63.8
Mar 79.8 70.7 64.2
Apr 80.4 71.5 64.8
May 82.5 73.3 66.2
Jun 83.1 74.2 67.4
Jul 84.4 75.4 68.5
Aug 84.5 75.9 69.1
Sep 85.3 75.7 68.5
Oct 84.4 75 68.1
Nov 82 73.1 66.8
Dec 80.4 71.5 65.1

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 26.9 21.4 17.3
Feb 26.8 21.6 17.7
Mar 26.6 21.5 17.9
Apr 26.9 21.9 18.2
May 28.1 22.9 19
Jun 28.4 23.4 19.7
Jul 29.1 24.1 20.3
Aug 29.2 24.4 20.6
Sep 29.6 24.3 20.3
Oct 29.1 23.9 20.1
Nov 27.8 22.8 19.3
Dec 26.9 21.9 18.4



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.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Hilo (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 29% 0 6.4
Feb 41% 0 12.4
Mar 52% 0 11.8
Apr 49% 0 8.5
May 39% 0 5.7
Jun 52% 0 5.5
Jul 53% 0 7.4
Aug 53% 0 8.2
Sep 48% 0 7.2
Oct 48% 0 8.5
Nov 57% 0 12.7
Dec 52% 0 15.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 29 0 16.3
Feb 41 0 31.5
Mar 52 0 30
Apr 49 0 21.6
May 39 0 14.5
Jun 52 0 14
Jul 53 0 18.8
Aug 53 0 20.8
Sep 48 0 18.3
Oct 48 0 21.6
Nov 57 0 32.3
Dec 52 0 38.9


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.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

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
Jan 67.6%
Feb 68.4%
Mar 70.4%
Apr 71.1%
May 68.4%
Jun 69.7%
Jul 70%
Aug 70.6%
Sep 68.8%
Oct 71.2%
Nov 73.6%
Dec 73.1%


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

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 75.7 in June means 75.7% of the tourists vs. July.



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.


Best Times to Travelthe United States › Hilo, HI, US