Where is the sea coldest in Hawaii in January?

Big Beach in United States has the coldest sea in Hawaii in January, averaging about 18.0 °C. Hamoa Beach (18.0 °C) and Diamond Head Beach are the next coolest.

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

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

How are these January sea temperatures calculated?

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

Where the sea is coolest across Hawaii during January, ranked by long-term monthly average water temperature. Big Beach (Maui, United States) is the coolest at around 18°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
18°C
January average
2
Hamoa Beach
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
18°C
January average
3
Diamond Head Beach
Oahu · United States · Pacific Ocean
Mild — fine for a swim, cool at first
18°C
January average
4
Little Beach Maui
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
18°C
January average
5
Napili Bay
Maui · United States · Pacific Ocean
Mild — fine for a swim, cool at first
18°C
January average
6
Waimanalo Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
7
Sunset Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
8
Ko Olina Lagoons
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
9
Kee Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
10
Kua Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
11
Hapuna Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
12
Makalawena Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
13
Poipu Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
14
Lydgate Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
15
Papohaku Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
16
Lanikai Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
17
Bellows Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
18
Wailea Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
19
Kapalua Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
20
Hookipa Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
21
Turtle Bay
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
22
Mokuleia Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
23
Polihua Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
24
Halawa Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average
25
Salt Pond Beach
Hawaii · United States · Pacific Ocean
Warm — comfortable swimming
24°C
January average

Coldest sea in January elsewhere

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Hawaii in January — frequently asked questions

Where is the sea coldest in Hawaii in January?: Big Beach in United States has the coldest sea in Hawaii in January, averaging about 18.0 °C. Hamoa Beach (18.0 °C) and Diamond Head Beach are the next coolest.
How many beaches in Hawaii are warm enough to swim in January?: 20 of the top 25 ranked beaches in Hawaii average 22 °C or more in January, which most swimmers find comfortable without a wetsuit.
How are these January sea temperatures calculated?: Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical January rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.

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