The Big Island Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in The Big Island, the United States of America in August.

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Kailua-Kona Waikoloa Hapuna Beach Kaupulehu

Planning a journey to The Big Island, the United States of America this August and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in The Big Island in August

The Big Island, the United States of America is a region in the United States of America. August in The Big Island generally has warm temperatures, with precipitation levels ranging from moderate to heavy.

Temperatures

The average maximum temperatures are warm and range from 24°C (75°F) in Volcano to 28°C (82°F) in Hapuna Beach. Nighttime temperatures generally drop to 21°C (70°F) in Hapuna Beach and 18°C (64°F) in Volcano.

To learn more about the conditions in specific areas of The Big Island, the United States of America, check out the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Hawi with an average of 32 mm (1.3 in) to heavy rainfall in Captain Cook with 662 mm (26 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in August. Kailua-Kona typically receives 280 hours of sunlight, making it ideal for those seeking sunny weather.

Explore The Big Island by month

Pick a month to see the average temperature, rainfall and sunshine in The Big Island — and find the best time to visit. (based on Kailua-Kona)

January23°C (73°F) February23°C (73°F) March23°C (73°F) April23°C (73°F) May24°C (75°F) June25°C (77°F) This monthJuly25°C (77°F) August26°C (79°F) September26°C (79°F) October25°C (77°F) November25°C (77°F) December24°C (75°F)
Best Time to Visit The Big Island →

Best Places to Visit in The Big Island in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across The Big Island.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in The Big Island

What is the weather like in August for some of the most popular destinations in The Big Island, the United States of America?

Temperature range in The Big Island (August)

Precipitation variation in The Big Island (August)

Kailua-Kona

In August Kailua-Kona generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
26°C (79°F)
26°C (79°F)
Min temperature
21°C (70°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
290 hours
280 hours
260 hours
Monthly rainfall
432 mm (17 in)
422 mm (17 in)
356 mm (14 in)
Monthly rainy days
19 days
18 days
16 days
Weather conditions
poor
poor
poor
Climate in Kailua-Kona →

Waikoloa

In August Waikoloa generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 20°C (68°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Min temperature
20°C (68°F)
20°C (68°F)
20°C (68°F)
Monthly sun hours
290 hours
280 hours
260 hours
Monthly rainfall
327 mm (13 in)
341 mm (13 in)
296 mm (12 in)
Monthly rainy days
20 days
19 days
17 days
Weather conditions
poor
poor
poor
Climate in Waikoloa →

Hapuna Beach

In August Hapuna Beach generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
28°C (82°F)
28°C (82°F)
28°C (82°F)
Min temperature
20°C (68°F)
21°C (70°F)
21°C (70°F)
Monthly sun hours
290 hours
280 hours
260 hours
Monthly rainfall
258 mm (10 in)
272 mm (11 in)
238 mm (9.4 in)
Monthly rainy days
20 days
19 days
17 days
Weather conditions
unpleasant
poor
unpleasant
Climate in Hapuna Beach →

Kaupulehu

In August Kaupulehu generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
26°C (79°F)
27°C (81°F)
26°C (79°F)
Min temperature
22°C (72°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
290 hours
280 hours
260 hours
Monthly rainfall
347 mm (14 in)
345 mm (14 in)
302 mm (12 in)
Monthly rainy days
19 days
18 days
16 days
Weather conditions
poor
poor
poor
Climate in Kaupulehu →

Kalaoa

In August Kalaoa generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« July
August
September »
July
August
September
Max temperature
25°C (77°F)
26°C (79°F)
26°C (79°F)
Min temperature
21°C (70°F)
22°C (72°F)
22°C (72°F)
Monthly sun hours
290 hours
280 hours
260 hours
Monthly rainfall
408 mm (16 in)
400 mm (16 in)
349 mm (14 in)
Monthly rainy days
19 days
18 days
16 days
Weather conditions
poor
poor
poor
Climate in Kalaoa →

Is your destination not in the list? Have a look at all destinations in The Big Island, in the United States of America.

Popular cities in August

Day & night temperatures, rainfall and average weather in The Big Island in August.

City Weather Day temp Night temp Rainfall
Kailua-Kona 26°C (79°F) 22°C (72°F) 422 mm (17 in)
Waikoloa 27°C (81°F) 20°C (68°F) 341 mm (13 in)
Hapuna Beach 28°C (82°F) 21°C (70°F) 272 mm (11 in)
Kaupulehu 27°C (81°F) 22°C (72°F) 345 mm (14 in)
Kalaoa 26°C (79°F) 22°C (72°F) 400 mm (16 in)
Waimea 27°C (81°F) 20°C (68°F) 192 mm (7.6 in)

The Big Island weather in August: frequently asked questions

What is the weather like in The Big Island, the United States of America in August?

August in The Big Island, the United States of America brings poor weather. In Kailua-Kona, daytime temperatures are typically around 26°C (79°F) and nighttime lows hover near 22°C (72°F).

What is the average temperature in The Big Island, the United States of America in August?

Average temperatures in The Big Island, the United States of America during August range from a nighttime low near 22°C (72°F) to a daytime high around 26°C (79°F) in Kailua-Kona.

Does The Big Island, the United States of America get a lot of rain in August?

Rainfall in The Big Island, the United States of America peaks during August. Kailua-Kona averages roughly 422 mm (17 in), so frequent and sometimes heavy showers are the norm.

Is August a Good Time to Visit The Big Island, the United States of America?

In our opinion, August may not be the ideal time to visit The Big Island, the United States of America due to the typically poor weather in Kailua-Kona.

On average, the best time to visit The Big Island, the United States of America is in January, February and December with generally pleasant weather in Kailua-Kona. On the other hand, the months of April, May, June, July, August, September and October tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in The Big Island.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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