Hilo (HI) Temperature by Month
Hilo in Hawaii, United States of America enjoys a stable climate, with daytime temperatures staying close to 24°C (75°F) throughout the year. Explore the full monthly breakdown below.
Hilo Monthly Temperatures
With minimal seasonal shifts, Hilo experiences a constant climate year-round. Maximum daytime temperatures range from a comfortable 26°C (79°F) in August to a comfortable 23°C (73°F) in February. At night, temperatures range from 20°C (68°F) in August to 17°C (63°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Hilo by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 176 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Hilo Temperatures: 1976-2026
Browse day-by-day temperature records for Hilo spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Hilo vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Hilo vs World: Temperature Compared
Hilo's average annual maximum temperature is 24°C (75°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Hilo?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Hilo, February is the coolest month, with average highs of 23°C (73°F) and humidity around 75% — considered high. In August, the warmest month, temperatures average 26°C (79°F) with 78% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Hilo's weather — including monthly rainfall, sunshine hours, and humidity — visit our Hilo climate page.
