Where is the sea coldest in Hawaii in March?

Big Beach in United States has the coldest sea in Hawaii in March, averaging about 19.0 °C. Hamoa Beach (19.0 °C) and Diamond Head Beach are the next coolest.

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

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

How are these March sea temperatures calculated?

Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical March 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 March

Where the sea is coolest across Hawaii during March, ranked by long-term monthly average water temperature. Big Beach (Maui, United States) is the coolest at around 19°C. Open any spot for today's live water temperature and a 7-day swim forecast.

1
Big Beach
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
19°C
March average
2
Hamoa Beach
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
19°C
March average
3
Diamond Head Beach
Oahu · United States · Pacific Ocean
Mild — fine for a swim, cool at first
19°C
March average
4
Little Beach Maui
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
19°C
March average
5
Napili Bay
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
19°C
March average
6
Waimanalo Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
7
Sunset Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
8
Ko Olina Lagoons
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
9
Kee Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
10
Kua Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
11
Hapuna Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
12
Makalawena Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
13
Poipu Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
14
Lydgate Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
15
Papohaku Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
16
Lanikai Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
17
Bellows Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
18
Wailea Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
19
Kapalua Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
20
Hookipa Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
21
Turtle Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
22
Mokuleia Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
23
Polihua Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
24
Halawa Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average
25
Salt Pond Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
March average

Coldest sea in March elsewhere

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Hawaii in March — frequently asked questions

Where is the sea coldest in Hawaii in March?: Big Beach in United States has the coldest sea in Hawaii in March, averaging about 19.0 °C. Hamoa Beach (19.0 °C) and Diamond Head Beach are the next coolest.
How many beaches in Hawaii are warm enough to swim in March?: 20 of the top 25 ranked beaches in Hawaii average 22 °C or more in March, which most swimmers find comfortable without a wetsuit.
How are these March sea temperatures calculated?: Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical March rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

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