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

42.2

°F

March 17, 21:25

Trend:

increasing

Yesterday:

41.2°F

Tomorrow:

42.7°F

Sunrise:

07:15

Sunset:

19:15

Day Length:

12 h. 0 min.

Long Beach in March

Minimum:

38.5°F

Average:

43.4°F

Maximum:

49.8°F

Sea water temperature in Long Beach today

As of now, in Long Beach, the water temperature is 42.2°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.8°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 49.4°F on 2024, while the historical minimum was 41.3°F on 2018.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 43.1°F, with minimum temperature starting at 42.7°F, while the maximum might reach 43.6°F.

Daily water temperature in Long Beach

Date Current Year

actual* / forecast**

last year 10 years average
Mar 3 36.7°F 39.1°F 41.8°F
Mar 4 36.9°F 39.1°F 41.8°F
Mar 5 37.3°F 40.2°F 42.2°F
Mar 6 38.1°F 38.8°F 42.0°F
Mar 7 43.2°F 39.7°F 42.4°F
Mar 8 40.2°F 40.6°F 42.3°F
Mar 9 39.1°F 41.2°F 42.8°F
Mar 10 42.4°F 40.5°F 43.2°F
Mar 11 43.7°F 40.8°F 43.6°F
Mar 12 46.0°F 42.9°F 44.7°F
Mar 13 41.1°F 44.3°F 44.0°F
Mar 14 42.7°F 42.7°F 44.3°F
Mar 15 42.2°F 42.9°F 44.3°F
Mar 16 41.2°F 44.4°F 44.4°F
Mar 17 42.2°F 43.6°F 44.9°F
Mar 18 42.7°F 44.2°F 45.4°F
Mar 19 43.0°F 45.5°F 45.8°F
Mar 20 43.2°F 45.1°F 46.0°F
Mar 21 42.9°F 45.8°F 45.6°F
Mar 22 42.8°F 46.1°F 45.6°F
Mar 23 43.3°F 47.2°F 46.1°F
Mar 24 43.6°F 47.1°F 46.4°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 108 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, 53.9°F in Spring, 78.8°F in Summer, and 67.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Annapolis 44.5°F 36mi
Warsaw 52.3°F 38mi
Baltimore 41.5°F 58mi

* current water temperature in this city

** straight line distance from Long Beach