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St. Paul Island Sea Temperature in April

Pribilof Islands, United States

March St. Paul Island year-round → May

Average sea temperature for St. Paul Island, United States across April, based on 10 years of daily readings.

Average

16.64° C

High

18.99° C

Low

14.78° C

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

April is the 4th warmest of 12 months at St. Paul Island. On average the water sits 1.8° than the year-round mean of 14.85° C.

Compared to March, April is 1.1° cooler than (17.77° C in March). By May the water is usually 15.38° C.

St. Paul Island Day-by-Day Water Temperature in April

10-year low, average and high

14.0° C
15.5° C
17.0° C
18.5° C
20.0° 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 St. Paul 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 St. Paul Island

10-year daily averages

Day Average Low High
April 1 17.13° C 15.93° C 18.91° C
April 2 17.14° C 16° C 18.89° C
April 3 17.16° C 16.06° C 18.89° C
April 4 17.1° C 16.11° C 18.64° C
April 5 17.07° C 16.14° C 18.75° C
April 6 17° C 16.01° C 18.92° C
April 7 16.98° C 15.93° C 18.91° C
April 8 16.9° C 15.87° C 18.94° C
April 9 16.85° C 15.88° C 18.96° C
April 10 16.94° C 15.98° C 18.99° C
April 11 16.91° C 16.05° C 18.9° C
April 12 16.86° C 16.05° C 18.82° C
April 13 16.83° C 15.97° C 18.82° C
April 14 16.77° C 15.96° C 18.81° C
April 15 16.72° C 15.96° C 18.66° C
April 16 16.68° C 15.75° C 18.53° C
April 17 16.61° C 15.64° C 18.43° C
April 18 16.43° C 15.46° C 18.27° C
April 19 16.44° C 15.68° C 18.25° C
April 20 16.48° C 15.89° C 18.34° C
April 21 16.37° C 15.82° C 18.26° C
April 22 16.42° C 15.83° C 18.31° C
April 23 16.39° C 15.76° C 18.34° C
April 24 15.99° C 15.55° C 16.42° C
April 25 15.93° C 15.18° C 16.45° C
April 26 16.24° C 14.92° C 18.31° C
April 27 16.2° C 14.78° C 18.3° C
April 28 16.16° C 14.84° C 18.32° C
April 29 16.19° C 14.95° C 18.33° C
April 30 16.12° C 15° C 18.28° C

Where April Sits in the Year

April highlighted

10.5° C
13.1° C
15.8° C
18.4° C
21.0° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
16.81° C
17.77° C
17.77° C
16.64° C
15.38° C
14.12° C
13.14° C
12.57° C
12.53° C
12.73° C
13.64° C
15.03° C
10-year monthly history for St. Paul 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

St. Paul Island Location

-38.7167, 77.5333

-38.71670, 77.53330 View on OpenStreetMap →

St. Paul Island sits at -38.7167°N, 77.5333°E, on the coast of Pribilof Islands, 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 St. Paul Island