Swimming in Hawaii in august 2025 Sea temperature by city in august

Do you want to go to the beach in Hawaii in august 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in august in Hawaii by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Hawaii in august 2025

Here, find the average sea temperature in Hawaii in august in several coastal cities.

O'ahu in august

on average:

80°F

min: 79°F / max: 81°F

on average:

80°F

min: 79°F / max: 81°F

on average:

80°F

min: 79°F / max: 81°F

'Aiea

on average:

80°F

min: 79°F / max: 81°F

'Ewa Beach

on average:

80°F

min: 79°F / max: 81°F

Hale'iwa

on average:

80°F

min: 78°F / max: 81°F

Kauaʻi in august

on average:

79°F

min: 78°F / max: 81°F

on average:

80°F

min: 79°F / max: 81°F

on average:

79°F

min: 79°F / max: 81°F

on average:

80°F

min: 79°F / max: 81°F

Lihue

on average:

80°F

min: 79°F / max: 81°F

Anahola

on average:

80°F

min: 78°F / max: 81°F

Maui in august

on average:

80°F

min: 79°F / max: 82°F

on average:

80°F

min: 79°F / max: 82°F

on average:

80°F

min: 79°F / max: 81°F

on average:

80°F

min: 79°F / max: 81°F

Kahoolawe

on average:

80°F

min: 78°F / max: 81°F

Lanai

on average:

80°F

min: 78°F / max: 82°F

Big Island in august

on average:

80°F

min: 78°F / max: 81°F

on average:

80°F

min: 79°F / max: 82°F

on average:

80°F

min: 79°F / max: 82°F

island of Hawaii (Big Island)

on average:

80°F

min: 79°F / max: 82°F

Hawaiian Ocean View

on average:

80°F

min: 79°F / max: 82°F

Hawi

on average:

80°F

min: 78°F / max: 82°F

Where should you go swimming in Hawaii in the month of august?

Swimming in Hawaii in august is ideal

In august in Hawaii swimming conditions are generally the same everywhere.

In august in Honolulu (Oahu), Kauai (Garden Isle), Maui, Hilo, Captain Cook, Hana, Kahului, Kekaha, Kilauea, La'ie, Molokai, Niihau, Pahala, Waianae, island of Hawaii (Big Island), Kahoolawe, Lanai, Lihue, 'Aiea, 'Ewa Beach, Anahola, Hale'iwa, Hau'ula, Hawaiian Ocean View, Hawi, Holualoa, Honoka'a, Kailua, Kalaheo, Kaneohe, Kapaau, Kaunakakai, Kihei, Koloa, Paia, Papa'ikou, Pearl City, Waialua, Waikoloa, Wailuku, Waimanalo, Waimea and Waipahu, swimming conditions are perfect! With water reaching a maximum of 81°F and an average of 80°F, going in the water (and staying there!) feels great.

Where to go swimming in Hawaii in august: the map of sea temperatures

ideal swimming pleasant swimming cool swimming cold swimming freezing swimming

Water temperature and seasonal norms in august

Honolulu (Oahu)

August
Average sea temperature 80°F
Minimum sea temperature 79°F
Maximum sea temperature 81°F
Average outside temperature 81°F
Maximum outside temperature 83°F
Minimum outside temperature 79°F
Precipitation 2.5in
Number of days of precipitation 3 jour(s)
(9%)
Cloud cover 35%
Our opinion ideal swimming

More information on swimming in Honolulu (Oahu) in august

Kauai (Garden Isle)

August
Average sea temperature 79°F
Minimum sea temperature 78°F
Maximum sea temperature 81°F
Average outside temperature 81°F
Maximum outside temperature 83°F
Minimum outside temperature 79°F
Precipitation 4in
Number of days of precipitation 5 jour(s)
(17%)
Cloud cover 43%
Our opinion ideal swimming

More information on swimming in Kauai (Garden Isle) in august

Maui

August
Average sea temperature 80°F
Minimum sea temperature 79°F
Maximum sea temperature 82°F
Average outside temperature 79°F
Maximum outside temperature 81°F
Minimum outside temperature 79°F
Precipitation 1.1in
Number of days of precipitation 1 jour(s)
(4%)
Cloud cover 28%
Our opinion ideal swimming

More information on swimming in Maui in august

Hilo

August
Average sea temperature 80°F
Minimum sea temperature 78°F
Maximum sea temperature 81°F
Average outside temperature 74°F
Maximum outside temperature 76°F
Minimum outside temperature 72°F
Precipitation 5.8in
Number of days of precipitation 6 jour(s)
(20%)
Cloud cover 33%
Our opinion ideal swimming

More information on swimming in Hilo in august

Captain Cook

August
Average sea temperature 80°F
Minimum sea temperature 79°F
Maximum sea temperature 82°F
Average outside temperature 74°F
Maximum outside temperature 76°F
Minimum outside temperature 72°F
Precipitation 4.4in
Number of days of precipitation 5 jour(s)
(18%)
Cloud cover 28%
Our opinion ideal swimming

More information on swimming in Captain Cook in august

List of coastal cities in Hawaii

Honolulu (Oahu) in augustideal swimming
Kauai (Garden Isle) in augustideal swimming
Maui in augustideal swimming
Hilo in augustideal swimming
Captain Cook in augustideal swimming
Hana in augustideal swimming
Kahului in augustideal swimming
Kekaha in augustideal swimming
Kilauea in augustideal swimming
La'ie in augustideal swimming
Molokai in augustideal swimming
Niihau in augustideal swimming
Pahala in augustideal swimming
Waianae in augustideal swimming
island of Hawaii (Big Island) in augustideal swimming
Kahoolawe in augustideal swimming
Lanai in augustideal swimming
Lihue in augustideal swimming
'Aiea in augustideal swimming
'Ewa Beach in augustideal swimming
Anahola in augustideal swimming
Hale'iwa in augustideal swimming
Hau'ula in augustideal swimming
Hawaiian Ocean View in augustideal swimming
Hawi in augustideal swimming
Holualoa in augustideal swimming
Honoka'a in augustideal swimming
Kailua in augustideal swimming
Kalaheo in augustideal swimming
Kaneohe in augustideal swimming
Kapaau in augustideal swimming
Kaunakakai in augustideal swimming
Kihei in augustideal swimming
Koloa in augustideal swimming
Paia in augustideal swimming
Papa'ikou in augustideal swimming
Pearl City in augustideal swimming
Waialua in augustideal swimming
Waikoloa in augustideal swimming
Wailuku in augustideal swimming
Waimanalo in augustideal swimming
Waimea in augustideal swimming
Waipahu in augustideal swimming
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