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Old Harbor, Kodiak Island Sea Temperature in April

Alaska, United States

March Old Harbor, Kodiak Island year-round → May

Average sea temperature for Old Harbor, Kodiak Island, United States across April, based on 10 years of daily readings.

Average

4.53° C

High

6.38° C

Low

3.24° C

Water at this temperature is freezing cold, can cause pain and takes your breath away. Unless you are very experienced and are under strict supervision, swimming in this water for more than a few minutes can be very dangerous. Be careful, stay safe, and enjoy the rush of endorphins and exhilaration from a brief cold water swim.

April is the 9th warmest of 12 months at Old Harbor, Kodiak Island. On average the water sits 2.9° than the year-round mean of 7.46° C.

Compared to March, April is 0.5° warmer than (4.06° C in March). By May the water is usually 6.43° C.

Old Harbor, Kodiak Island Day-by-Day Water Temperature in April

10-year low, average and high

2.5° C
3.6° C
4.8° C
5.9° C
7.0° C
1
5
10
15
20
25
30
Day-by-day low and high band with the 10-year daily average through April. Range Average

Each vertical bar above is one day of April. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Old Harbor, Kodiak Island.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

April Water Temperature Table for Old Harbor, Kodiak Island

10-year daily averages

Day Average Low High
April 1 4.1° C 3.43° C 5.62° C
April 2 4.13° C 3.24° C 5.77° C
April 3 4.17° C 3.32° C 5.57° C
April 4 4.2° C 3.28° C 5.33° C
April 5 4.27° C 3.32° C 5.6° C
April 6 4.25° C 3.31° C 5.61° C
April 7 4.19° C 3.34° C 5.56° C
April 8 4.27° C 3.35° C 5.53° C
April 9 4.31° C 3.48° C 5.44° C
April 10 4.34° C 3.67° C 5.4° C
April 11 4.33° C 3.62° C 5.38° C
April 12 4.3° C 3.67° C 5.3° C
April 13 4.24° C 3.67° C 5.23° C
April 14 4.24° C 3.72° C 5.18° C
April 15 4.32° C 3.77° C 5.17° C
April 16 4.41° C 4° C 5.23° C
April 17 4.52° C 4.11° C 5.29° C
April 18 4.61° C 4.18° C 5.3° C
April 19 4.61° C 4.22° C 5.32° C
April 20 4.6° C 4.03° C 5.29° C
April 21 4.63° C 3.84° C 5.27° C
April 22 4.72° C 3.83° C 5.59° C
April 23 4.77° C 3.82° C 5.57° C
April 24 4.83° C 4.21° C 5.71° C
April 25 4.88° C 4.31° C 5.71° C
April 26 4.9° C 3.65° C 6.14° C
April 27 5.08° C 4.16° C 6.1° C
April 28 5.22° C 4.21° C 6.08° C
April 29 5.31° C 4.22° C 6.16° C
April 30 5.28° C 4.22° C 6.38° C

Where April Sits in the Year

April highlighted

1.5° C
5.3° C
9.0° C
12.8° C
16.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
4.52° C
4.39° C
4.06° C
4.53° C
6.43° C
8.96° C
11.53° C
12.42° C
11.28° C
9.07° C
6.96° C
5.31° C
10-year monthly history for Old Harbor, Kodiak Island. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in April

Compare other United States water for the same month

Old Harbor, Kodiak Island Location

57.2028, -153.3039

57.20280, -153.30390 View on OpenStreetMap →

Old Harbor, Kodiak Island sits at 57.2028°N, 153.3039°W, on the coast of Alaska, United States. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Old Harbor, Kodiak Island