Our verdict
The best time to visit Hilo is March-April
In the summer months, temperatures can reach as high as 26℃ (78℉) in Hilo. The weather at night in the winter can get down to temperatures as low as 15℃ (59℉).
The days are longest in Hilo in July, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. On average it rains the most days in February, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.
Keep reading to find all the info you need (and none of the stuff you don’t) about the best times to go to Hilo. By the time you get to the bottom, you’ll be ready to start booking your trip.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Hilo seasons
Before you continue, it’s important to know when the seasons are in Hilo as they might be different to yours depending on where in the world you’re travelling from. Hilo is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Hilo
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Hilo for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Hilo climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Hilo for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Hilo in January
- Average temperature: 20℃ (68℉)
- Average high temperature: 22℃ (71℉)
- Average low temperature: 18℃ (65℉)
- Average humidity: 78%
- Average sunny days: 12 days
- Average rainfall: 69mm (3") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in January, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Hilo in February
- Average temperature: 20℃ (67℉)
- Average high temperature: 21℃ (70℉)
- Average low temperature: 18℃ (64℉)
- Average humidity: 79%
- Average sunny days: 6 days
- Average rainfall: 96mm (4") over 17 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in February, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Hilo in March
- Average temperature: 20℃ (67℉)
- Average high temperature: 21℃ (70℉)
- Average low temperature: 18℃ (64℉)
- Average humidity: 80%
- Average sunny days: 3 days
- Average rainfall: 80mm (3") over 23 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in March, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Hilo in April
- Average temperature: 20℃ (68℉)
- Average high temperature: 22℃ (71℉)
- Average low temperature: 18℃ (65℉)
- Average humidity: 79%
- Average sunny days: 2 days
- Average rainfall: 50mm (2") over 21 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in April, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Hilo in May
- Average temperature: 21℃ (70℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 19℃ (66℉)
- Average humidity: 79%
- Average sunny days: 3 days
- Average rainfall: 35mm (1") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in May, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Hilo in June
- Average temperature: 21℃ (71℉)
- Average high temperature: 23℃ (74℉)
- Average low temperature: 20℃ (67℉)
- Average humidity: 78%
- Average sunny days: 4 days
- Average rainfall: 21mm (1") over 16 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Hilo in July
- Average temperature: 22℃ (72℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 21℃ (69℉)
- Average humidity: 78%
- Average sunny days: 3 days
- Average rainfall: 35mm (1") over 17 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in July, make sure you pack t-shirts and light clothing.
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Hilo in August
- Average temperature: 23℃ (73℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 21℃ (70℉)
- Average humidity: 79%
- Average sunny days: 2 days
- Average rainfall: 61mm (2") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in August, make sure you pack t-shirts and light clothing.
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Hilo in September
- Average temperature: 23℃ (73℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 21℃ (70℉)
- Average humidity: 79%
- Average sunny days: 3 days
- Average rainfall: 46mm (2") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in September, make sure you pack t-shirts and light clothing.
Hilo in October
- Average temperature: 22℃ (72℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 21℃ (70℉)
- Average humidity: 79%
- Average sunny days: 4 days
- Average rainfall: 71mm (3") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in October, make sure you pack t-shirts and light clothing.
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Hilo in November
- Average temperature: 21℃ (71℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 20℃ (68℉)
- Average humidity: 79%
- Average sunny days: 3 days
- Average rainfall: 60mm (2") over 21 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in November, make sure you pack t-shirts and maybe a light jumper for the evenings.
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Hilo in December
- Average temperature: 21℃ (69℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 19℃ (66℉)
- Average humidity: 79%
- Average sunny days: 6 days
- Average rainfall: 67mm (3") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Hilo in December, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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