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Water temperature in Lopez Island (WA) in April

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Is it warm enough to swim in Lopez Island in April? Average water temperature in Lopez Island in April is 47.5°F and therefore is not suitable for comfortable swimming. The warmest sea in Lopez Island in April is 53.1°F, and the coldest is 45.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Lopez Island

Changes water temperature in Lopez Island in April 2025, 2024

To get an accurate forecast for the water temperature in Lopez Island for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Lopez Island, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of April.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
April 146.6°F47.8°F45.1°F50°F
April 247.3°F47.8°F45.3°F50°F
April 346.9°F48.2°F45.1°F50°F
April 446.6°F48.2°F45.1°F49.5°F
April 546.9°F48.2°F45.3°F49.5°F
April 647.8°F48°F45.5°F49.5°F
April 747.8°F47.7°F45.3°F49.8°F
April 848°F47.8°F45.5°F49.8°F
April 947.3°F48°F45.7°F49.8°F
April 1047.5°F46.9°F45.7°F50.5°F
April 1147.7°F47.1°F45.9°F50.7°F
April 1247.3°F48°F45.7°F50.7°F
April 1347.7°F47.7°F45.7°F50.4°F
April 1447.8°F47.8°F45.9°F50.4°F
April 1548°F48°F45.9°F50.4°F
Day 2025 2024 Min Max
April 1648.2°F48°F46°F50.7°F
April 1748°F48.2°F46.2°F51.1°F
April 1848.2°F48.4°F46.2°F51.6°F
April 1948.4°F48.7°F45.7°F51.8°F
April 2048°F48.9°F46°F52.2°F
April 2148.4°F48.6°F45.7°F52.3°F
April 2248.6°F48.4°F46°F53.1°F
April 2348°F49.1°F46°F52.7°F
April 2448.4°F49.1°F46°F52.7°F
April 2548.9°F49.3°F46°F52.3°F
April 2649.5°F48.7°F46.2°F52.5°F
April 2749.1°F48.9°F46.6°F52.5°F
April 2849.3°F48.9°F46.6°F52.5°F
April 2948.9°F48.7°F46.9°F52.5°F
April 3048.4°F48.6°F46.8°F52.7°F
Lopez Island water temp chart in April

Average water temperature in Lopez Island in April over a decade

20162017201820192020
51.1°F48.2°F47.8°F48.4°F47.5°F
20212022202320242025
47.5°F46.9°F46.6°F48.2°F48°F

Lopez Island sea state in April

Chart comparing the height of waves in Lopez Island in April over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Lopez Island in April

Lopez Island water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in April?

Want to know where the water temperature in April is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in April. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
San Juan Islands47.5°F45.1°F52°F
Olga47.5°F44.8°F53.6°F
Bowman Bay48.2°F45.3°F54.3°F
Deception Pass48.2°F45.3°F54.3°F
Lummi Island48°F44.6°F55.2°F
Roche Harbor47.3°F44.6°F52.5°F
Eastsound47.7°F44.4°F53.6°F
Orcas Island47.7°F44.4°F53.6°F
Oak Bay47.5°F44.8°F51.3°F
Willows Beach47.5°F44.8°F51.3°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Lopez Island is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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