Oak Harbor — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Oak Harbor (Washington, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Oak Harbor help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Oak Harbor in the Salish Sea today is 13°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Oak Harbor rose over the last 30 days but fell over the last week. Currently, the sea water at this location is slightly warmer than average for this day in previous years.
According to our forecast, Water temperature in Oak Harbor will be 11.4°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 22 | 12.6°C | 11.3°C | |
| JUN 23 | 13.3°C | 11.3°C | |
| JUN 24 | 13.4°C | 11.0°C | |
| JUN 25 | 13.7°C | 11.0°C | |
| JUN 26 | 13.8°C | 11.5°C | |
| JUN 27 | 14.0°C | 11.5°C | |
| JUN 28 | 13.6°C | 11.3°C | |
| JUN 29 | 13.4°C | 11.8°C | |
| JUN 30 | 13.3°C | 11.8°C | 13.3°C |
| JUL 1 | 11.5°C | 13.0°C | |
| JUL 2 | 11.5°C | 12.8°C | |
| JUL 3 | 11.8°C | 12.5°C | |
| JUL 4 | 12.0°C | 12.2°C | |
| JUL 5 | 11.3°C | 12.0°C | |
| JUL 6 | 10.5°C | 11.7°C | |
| JUL 7 | 10.3°C | 11.4°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 6°C | 8°C | 10°C |
| February | 6°C | 7°C | 10°C |
| March | 6°C | 8°C | 10°C |
| April | 6°C | 8°C | 10°C |
| May | 6°C | 9°C | 12°C |
| June | 6°C | 10°C | 12°C |
| July | 8°C | 11°C | 14°C |
| August | 10°C | 12°C | 14°C |
| September | 9°C | 12°C | 13°C |
| October | 8°C | 11°C | 12°C |
| November | 7°C | 10°C | 12°C |
| December | 6°C | 9°C | 10°C |
* Click on a month to view detailed water temperature data.