Hilo Weather in July
Hilo in July averages 25°C (77°F) during the day and 20°C (68°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Hilo in July
The climate data from previous years indicates about 20 days of rain, averaging 133 mm (5.2 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Hilo in July
If you're visiting Hilo in July, expect highs of 25°C (77°F) and overnight lows around 20°C (68°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 20°C (68°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Hilo in July
You can expect a moderate amount of sunlight, with approximately 171 hours. This means a pleasant mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, May, June, July, August, September and October typically offer the best weather for Hilo.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Hilo's climate page.
Hilo Temperature in July
Min Temperature
20°C (68°F)
Max Temperature
25°C (77°F)
Chance of Rain
68%
Precipitation
133 mm (5.2 in)
Rainy days
20 days
Humidity
78%
Sunshine
171 hours
Percentage Sunshine
40%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hilo typically stay consistent throughout July, with daily highs averaging around 25°C (77°F). Nights are warm, with lows around 21°C (70°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Hilo in July
Browse day-by-day weather records for Hilo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hilo historical weather extremes in July
Based on 49 years of weather observations in Hilo between 1976 and 2025, these are the recorded extremes.
- On July 26, 2020, temperatures climbed to 34°C (93°F), marking the warmest July day on record.
- The lowest daytime temperature in July was 23°C (73°F), recorded on July 20, 1989.
- Nighttime temperatures dropped to 6°C (43°F) on July 14, 1996, marking the coldest July night on record.
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
perfect weather
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unpleasant
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What to Wear in Hilo in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Hilo in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Hilo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hilo climate overview or explore weather in the United States of America.
