Where is the sea coldest in Hawaii in May?

Big Beach in United States has the coldest sea in Hawaii in May, averaging about 23.0 °C. Hamoa Beach (23.0 °C) and Diamond Head Beach are the next coolest.

How many beaches in Hawaii are warm enough to swim in May?

25 of the top 25 ranked beaches in Hawaii average 22 °C or more in May, which most swimmers find comfortable without a wetsuit.

How are these May sea temperatures calculated?

Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical May rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

Seasonal ranking

Coldest sea temperature in Hawaii in May

Where the sea is coolest across Hawaii during May, ranked by long-term monthly average water temperature. Big Beach (Maui, United States) is the coolest at around 23°C. Open any spot for today's live water temperature and a 7-day swim forecast.

1
Big Beach
Maui · United States · Pacific Ocean
Pleasant — swimmable without a wetsuit
23°C
May average
2
Hamoa Beach
Maui · United States · Pacific Ocean
Pleasant — swimmable without a wetsuit
23°C
May average
3
Diamond Head Beach
Oahu · United States · Pacific Ocean
Pleasant — swimmable without a wetsuit
23°C
May average
4
Little Beach Maui
Maui · United States · Pacific Ocean
Pleasant — swimmable without a wetsuit
23°C
May average
5
Napili Bay
Maui · United States · Pacific Ocean
Pleasant — swimmable without a wetsuit
23°C
May average
6
Waimanalo Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
7
Sunset Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
8
Ko Olina Lagoons
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
9
Kee Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
10
Kua Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
11
Hapuna Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
12
Makalawena Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
13
Poipu Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
14
Lydgate Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
15
Papohaku Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
16
Lanikai Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
17
Bellows Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
18
Wailea Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
19
Kapalua Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
20
Hookipa Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
21
Turtle Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
22
Mokuleia Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
23
Polihua Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
24
Halawa Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average
25
Salt Pond Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
26°C
May average

Coldest sea in May elsewhere

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Hawaii in May — frequently asked questions

Where is the sea coldest in Hawaii in May?: Big Beach in United States has the coldest sea in Hawaii in May, averaging about 23.0 °C. Hamoa Beach (23.0 °C) and Diamond Head Beach are the next coolest.
How many beaches in Hawaii are warm enough to swim in May?: 25 of the top 25 ranked beaches in Hawaii average 22 °C or more in May, which most swimmers find comfortable without a wetsuit.
How are these May sea temperatures calculated?: Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical May rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

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