What is the current water temperature in Lerwick?

Q: What is the current water temperature in Lerwick?

As of now, in Lerwick, the water temperature is 12.46°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.

United Kingdom > Lerwick

Water temperature in Lerwick

Detailed information about the current water temperature in Lerwick. 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.

54.4

°F

October 3, 07:39

Trend:

stable

Yesterday:

54.4°F

Tomorrow:

54.3°F

Sunrise:

07:14

Sunset:

18:32

Day Length:

11 h. 18 min.

Lerwick in October

Minimum:

46.2°F

Average:

46.8°F

Maximum:

47.8°F

Sea water temperature in Lerwick today

As of now, in Lerwick, the water temperature is 54.4°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 1.1°F higher 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

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 maximum temperature for this date. The maximum temperature recorded for this date was 54.8°F on 2025, while the historical minimum was 52.2°F on 2019.

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 54.1°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Lerwick

Date	Current Year actual* / forecast**	last year	10 years average
Sep 19	54.1°F	56.1°F	54.1°F
Sep 20	54.2°F	56.1°F	54.1°F
Sep 21	54.2°F	55.9°F	54.0°F
Sep 22	54.6°F	55.7°F	54.1°F
Sep 23	54.3°F	55.5°F	54.1°F
Sep 24	54.2°F	55.3°F	53.9°F
Sep 25	54.3°F	55.6°F	53.9°F
Sep 26	54.2°F	55.5°F	53.9°F
Sep 27	54.5°F	55.7°F	53.9°F
Sep 28	54.1°F	55.4°F	53.7°F
Sep 29	54.4°F	55.1°F	53.6°F
Sep 30	53.9°F	55.6°F	53.5°F
Oct 1	54.0°F	55.2°F	53.5°F
Oct 2	54.4°F	55.0°F	53.3°F
Oct 3	54.4°F	54.8°F	53.3°F
Oct 4	54.3°F	55.4°F	53.2°F
Oct 5	54.2°F	55.1°F	53.2°F
Oct 6	54.2°F	55.1°F	53.2°F
Oct 7	54.2°F	55.1°F	53.1°F
Oct 8	54.1°F	55.0°F	53.0°F
Oct 9	54.0°F	54.6°F	52.9°F
Oct 10	53.9°F	54.6°F	52.8°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 Lerwick by month

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

The warmest water in Lerwick was recorded on July 22, 2025, reaching a 58.3°F. While the coldest temperature occurred on March 21, 2018, dipping to 42.8°F. The average readings by season are 46.7°F in Winter, 46.0°F in Spring, 53.1°F in Summer, and 52.4°F in Autumn.