What is the current water temperature in Bethlehem?

Q: What is the current water temperature in Bethlehem?

As of now, in Bethlehem, the water temperature is 14.24°C. 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.

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Water temperature in Bethlehem

Detailed information about the current water temperature in Bethlehem. 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.

57.6

°F

September 18, 12:33

Trend:

stable

Yesterday:

57.7°F

Tomorrow:

57.7°F

Sunrise:

06:13

Sunset:

18:08

Day Length:

11 h. 55 min.

Bethlehem in September

Minimum:

65.1°F

Average:

68.6°F

Maximum:

71.4°F

Sea water temperature in Bethlehem today

As of now, in Bethlehem, the water temperature is 57.6°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 0.2°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's reading indicates a minor change compared to the average water temperature of the last two weeks, but the overall trend remains steady. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 58.3°F on 2017, while the historical minimum was 57.1°F on 2025.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 57.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Bethlehem

Date	Current Year actual* / forecast**	last year	10 years average
Sep 4	57.2°F	57.5°F	57.5°F
Sep 5	57.5°F	56.8°F	57.4°F
Sep 6	57.5°F	56.8°F	57.4°F
Sep 7	57.9°F	57.4°F	57.5°F
Sep 8	57.5°F	57.6°F	57.4°F
Sep 9	57.7°F	57.6°F	57.5°F
Sep 10	57.4°F	58.0°F	57.6°F
Sep 11	58.3°F	57.7°F	57.6°F
Sep 12	58.4°F	57.8°F	57.7°F
Sep 13	58.3°F	57.6°F	57.6°F
Sep 14	57.7°F	56.6°F	57.6°F
Sep 15	57.5°F	56.8°F	57.7°F
Sep 16	57.7°F	57.0°F	57.8°F
Sep 17	57.7°F	57.0°F	57.9°F
Sep 18	57.6°F	57.1°F	57.8°F
Sep 19	57.7°F	57.6°F	57.9°F
Sep 20	57.7°F	57.6°F	57.9°F
Sep 21	57.9°F	57.5°F	58.1°F
Sep 22	57.9°F	57.6°F	58.1°F
Sep 23	58.1°F	57.6°F	58.3°F
Sep 24	58.1°F	57.5°F	58.2°F
Sep 25	58.0°F	58.3°F	58.2°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 Bethlehem by month

In an average year, Bethlehem offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Bethlehem was recorded on January 29, 2018, reaching a 74.3°F. While the coldest temperature occurred on August 23, 2023, dipping to 54.7°F. The average readings by season are 69.2°F in Winter, 66.6°F in Spring, 58.1°F in Summer, and 60.2°F in Autumn.