Lummi Island water temp
This data the coastal Lummi Island ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Current ocean temperature in Lummi Island
Water temperature in Lummi Island today is 51.8°F. Based on our historical data over a period of ten years, the warmest water in this day in Lummi Island was recorded in 2022 and was 53.2°F, and the coldest was recorded in 2010 at 49.1°F. Sea water temperature in Lummi Island is expected to drop to 50.2°F in the next 10 days. October average water temperature in Lummi Island is 51.4°F, the minimum temperature is 48.2°F, and the maximum is 55.9°F.
Throughout the year, the water temperature in Lummi Island does not rise above 68°F and therefore is not suitable for comfortable swimming. The average water temperature in Lummi Island in winter reaches 45.7°F, in spring 48.4°F, in summer the average temperature rises to 56.1°F, and in autumn it is 51.8°F.
Lummi Island water temperature now
| October 16, 2025 |
|---|
| today temp |
| 51.8°F |
| October 15, 2025 |
|---|
| yesterday temp |
| 51.8°F |
Surf Forecast in Lummi Island for today
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Lummi Island. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Lummi Island. Data in table shown for October 16, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 0' 1" | 0' 1" | 0' 1" | 0' 2" |
| 0.03 m | 0.03 m | 0.03 m | 0.04 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 0' 6" | 1' 0" | 1' 1" | 0' 11" |
| 0.14 m | 0.3 m | 0.32 m | 0.29 m |
Surf report in Lummi Island
Lummi Island weather forecast
Current temperature and weather
Data in a table show Lummi Island temperature today (October 16, 2025). For more information and forecast for a few days, go to the weather forecast Lummi Island.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 | | |  |
| 46.8°F | 45.3°F | 44.1°F | 47.8°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 |  | | |
| 51.8°F | 51.1°F | 51.4°F | 52.2°F |
You may also be interested in other sections of our site for Lummi Island: Sunrise and Sunset
Lummi Island water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Lummi Island. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Lummi Island on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 45.5°F | 40.8°F | 47.5°F | cold |
| Ocean water temperature in Lummi Island in January | ||||
| February | 45.1°F | 42.3°F | 47.8°F | cold |
| Ocean water temperature in Lummi Island in February | ||||
| March | 45.9°F | 43°F | 50.5°F | cold |
| Ocean water temperature in Lummi Island in March | ||||
| April | 48°F | 44.6°F | 55.2°F | cold |
| Ocean water temperature in Lummi Island in April | ||||
| May | 51.4°F | 46.9°F | 59°F | cold |
| Ocean water temperature in Lummi Island in May | ||||
| June | 54.1°F | 49.6°F | 61°F | cold |
| Ocean water temperature in Lummi Island in June | ||||
| July | 56.8°F | 51.6°F | 64°F | cold |
| Ocean water temperature in Lummi Island in July | ||||
| August | 57.2°F | 50°F | 64.4°F | cold |
| Ocean water temperature in Lummi Island in August | ||||
| September | 55.4°F | 51.3°F | 60.6°F | cold |
| Ocean water temperature in Lummi Island in September | ||||
| October | 51.4°F | 48.2°F | 55.9°F | cold |
| Ocean water temperature in Lummi Island in October | ||||
| November | 48.7°F | 46.4°F | 52.2°F | cold |
| Ocean water temperature in Lummi Island in November | ||||
| December | 46.6°F | 43.2°F | 49.3°F | cold |
| Ocean water temperature in Lummi Island in December | ||||
Chart monthly average water temperature in Lummi Island
