What is the current water temperature in Hermanus?

Q: What is the current water temperature in Hermanus?

As of now, in Hermanus, the water temperature is 14.4°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.

South Africa > Hermanus

Water temperature in Hermanus

Detailed information about the current water temperature in Hermanus. 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.

57.9

°F

May 8, 10:36

Trend:

stable

Yesterday:

57.2°F

Tomorrow:

57.6°F

Sunrise:

07:24

Sunset:

17:55

Day Length:

10 h. 31 min.

Hermanus in May

Minimum:

60.7°F

Average:

65.6°F

Maximum:

69.8°F

Sea water temperature in Hermanus today

As of now, in Hermanus, the water temperature is 57.9°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 2.1°F lower 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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 62.9°F on 2023, while the historical minimum was 56.8°F on 2022.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 57.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Hermanus

Date	Current Year actual* / forecast**	last year	10 years average
Apr 24	56.7°F	57.0°F	58.9°F
Apr 25	56.7°F	57.2°F	58.8°F
Apr 26	57.8°F	57.7°F	58.9°F
Apr 27	59.1°F	56.3°F	59.1°F
Apr 28	58.5°F	55.6°F	58.9°F
Apr 29	57.6°F	54.7°F	58.7°F
Apr 30	57.9°F	55.6°F	58.7°F
May 1	56.9°F	55.8°F	58.8°F
May 2	56.6°F	54.2°F	59.0°F
May 3	56.9°F	56.6°F	59.8°F
May 4	57.2°F	56.7°F	59.9°F
May 5	57.8°F	57.2°F	60.1°F
May 6	57.7°F	57.5°F	60.0°F
May 7	57.2°F	56.8°F	59.9°F
May 8	57.9°F	57.2°F	60.0°F
May 9	57.6°F	57.4°F	59.7°F
May 10	57.8°F	58.6°F	59.9°F
May 11	58.0°F	58.7°F	60.1°F
May 12	58.0°F	58.8°F	60.1°F
May 13	57.9°F	58.6°F	60.0°F
May 14	57.7°F	58.5°F	59.8°F
May 15	57.4°F	57.7°F	59.5°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 Hermanus by month

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

The warmest water in Hermanus was recorded on January 12, 2025, reaching a 70.8°F. While the coldest temperature occurred on April 15, 2024, dipping to 51.4°F. The average readings by season are 65.1°F in Winter, 60.8°F in Spring, 59.2°F in Summer, and 60.7°F in Autumn.