All data are in degrees Fahrenheit

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Water temperature in Long Beach

Detailed information about the current water temperature in Long Beach. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Long Beach now

83.4

°F

August 15, 11:22

Trend:

stable

Yesterday:

82.8°F

Tomorrow:

82.8°F

Sunrise:

06:20

Sunset:

20:00

Day Length:

13 h. 40 min.

Long Beach in August

Minimum:

34.2°F

Average:

41.8°F

Maximum:

45.0°F

Sea water temperature in Long Beach today

As of now, in Long Beach, the water temperature is 83.4°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 1.1°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 85.5°F on 2016, while the historical minimum was 79.1°F on 2017.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 82.8°F, the minimum temperature may reach 82.3°F, and the maximum might stay at 83.1°F.

Daily water temperature in Long Beach

Date Current Year

actual* / forecast**

last year 10 years average
Aug 1 81.6°F 84.8°F 82.0°F
Aug 2 80.5°F 83.5°F 81.8°F
Aug 3 80.7°F 83.1°F 82.0°F
Aug 4 80.9°F 82.0°F 81.8°F
Aug 5 81.0°F 81.3°F 81.7°F
Aug 6 81.3°F 80.9°F 81.5°F
Aug 7 81.5°F 80.3°F 81.6°F
Aug 8 81.7°F 79.9°F 81.7°F
Aug 9 81.9°F 79.9°F 81.7°F
Aug 10 80.8°F 79.7°F 81.4°F
Aug 11 82.9°F 80.0°F 81.8°F
Aug 12 83.4°F 79.5°F 81.8°F
Aug 13 82.9°F 80.9°F 82.1°F
Aug 14 82.8°F 81.1°F 82.3°F
Aug 15 83.4°F 81.6°F 82.3°F
Aug 16 82.8°F 81.5°F 81.7°F
Aug 17 82.8°F 81.6°F 81.7°F
Aug 18 83.1°F 83.2°F 82.0°F
Aug 19 83.0°F 83.0°F 81.9°F
Aug 20 82.9°F 81.0°F 81.8°F
Aug 21 82.4°F 80.6°F 81.3°F
Aug 22 82.3°F 79.9°F 81.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Long Beach by month

In Long Beach, the months June through September offer comfortable swimming conditions, which amounts to 109 swimming days.
The warmest water in Long Beach was recorded on July 30, 2025, reaching a 86.0°F. While the coldest temperature occurred on February 3, 2026, dipping to 32.0°F. The average readings by season are 41.9°F in Winter, 54.0°F in Spring, 78.8°F in Summer, and 67.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Annapolis 82.5°F 36mi
Warsaw 84.4°F 38mi
Baltimore 83.0°F 58mi

* current water temperature in this city

** straight line distance from Long Beach