This data the coastal Los Alamos sea 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.
Water temperature in Los Alamos today is 20.7°C. Based on our historical data over a period of ten years, the warmest water in this day in Los Alamos was recorded in 2023 and was 25°C, and the coldest was recorded in 2022 at 19.8°C. Sea water temperature in Los Alamos is expected to rise to 21.4°C in the next 10 days. September average water temperature in Los Alamos is 22.1°C, the minimum temperature is 16.3°C, and the maximum is 27.2°C.
The swimming season in Los Alamos lasts from June to October. During those months, Los Alamos water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Los Alamos in winter reaches 15.4°C, in spring 16.3°C, in summer the average temperature rises to 21.8°C, and in autumn it is 19.7°C.
14 September 2025 |
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today temp |
20.7°C |
13 September 2025 |
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yesterday temp |
20.6°C |
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 Los Alamos. 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 Los Alamos. Data in table shown for 14 September 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' 8" | 0' 8" | 0' 7" | 0' 7" |
0.2 m | 0.2 m | 0.19 m | 0.18 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 8" | 0' 8" | 0' 7" | 0' 7" |
0.21 m | 0.2 m | 0.18 m | 0.17 m |
Data in a table show Los Alamos temperature today (14 September 2025). For more information and forecast for a few days, go to the weather forecast Los Alamos.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
23.9°C | 23.5°C | 23.3°C | 26.2°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
28.4°C | 28°C | 26.5°C | 23.5°C |
You may also be interested in other sections of our site for Los Alamos: Sunrise and Sunset
These figures shows the average, minimum and maximum monthly sea temperature in Los Alamos. 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 Los Alamos 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 | |
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January | 15.2°C | 13.7°C | 17.1°C | cold |
Sea water temperature in Los Alamos in January | ||||
February | 14.9°C | 13.4°C | 16.2°C | cold |
Sea water temperature in Los Alamos in February | ||||
March | 15.2°C | 13.7°C | 16.8°C | cold |
Sea water temperature in Los Alamos in March | ||||
April | 16.1°C | 13.8°C | 18.2°C | cold |
Sea water temperature in Los Alamos in April | ||||
May | 17.7°C | 15°C | 21.3°C | cold |
Sea water temperature in Los Alamos in May | ||||
June | 19.5°C | 15.3°C | 24.1°C | cold |
Sea water temperature in Los Alamos in June | ||||
July | 22.1°C | 17.3°C | 26.7°C | warm |
Sea water temperature in Los Alamos in July | ||||
August | 23.8°C | 18.5°C | 27.9°C | warm |
Sea water temperature in Los Alamos in August | ||||
September | 22.1°C | 16.3°C | 27.2°C | warm |
Sea water temperature in Los Alamos in September | ||||
October | 19.8°C | 15.4°C | 23.9°C | cold |
Sea water temperature in Los Alamos in October | ||||
November | 17.3°C | 14.3°C | 20.8°C | cold |
Sea water temperature in Los Alamos in November | ||||
December | 16°C | 14°C | 18.4°C | cold |
Sea water temperature in Los Alamos in December |