Which is the hottest month in Hilo, Big Island?

The hottest time of year in Hilo, Big Island is normally September. Expect maximum daytime temperatures to reach 30°C with high heat and humidity.

Which month has the most rain in Hilo, Big Island?

In terms of rainfall, December is usually the wettest month in Hilo, Big Island with 82mm on average. There are normally 11 days in December with some rain.

When is it sunniest in Hilo, Big Island?

The sunniest time of year in Hilo, Big Island is normally September with bright sunshine on average for 74% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Hilo, Big Island?

The sea is usually at its warmest in Hilo, Big Island in September when the water temperature reaches 27°C.

Best time to visit Hilo, Big Island

Q: When is the best time to visit Hilo, Big Island?

The best time to visit Hilo, Big Island, Hawaii is in June Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 8 hours or more.

The best time to visit Hilo, Big Island, Hawaii is in June based on our default weather conditions. Update your weather preferences to see which months best match.

Hilo, Big Island by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Hawaii

Virgin Holidays: Early deals on 2026 holidays

Sale

Book early & save on worldwide holidays in 2026
Explore destinations in North America, Caribbean & more
Pay low deposits from £175 per person

Go to Virgin Holidays deal >>

View all Virgin Holidays offers

When is the best time to visit Hilo, Big Island?

The best time to visit Hilo, Big Island, Hawaii is in June based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

4
Jan
4
Feb
4
Mar
4
Apr
4
May
4
Jun
4
Jul
4
Aug
4
Sep
4
Oct
4
Nov
4
Dec

Change criteria

Max Day Temperature (°F)

70
Jan
70
Feb
70
Mar
72
Apr
73
May
75
Jun
75
Jul
75
Aug
75
Sep
75
Oct
73
Nov
72
Dec

Hours of Sunshine (daily)

5
Jan
5
Feb
5
Mar
5
Apr
5
May
6
Jun
5
Jul
5
Aug
5
Sep
5
Oct
4
Nov
4
Dec