Cairnryan Sea Temperature

(Today) 2025

7.3°C / 45.1°F

The water will feel cold. All but the most ardent watersports enthusiasts will be thinking of packing up for the winter. If not we'd suggest a thick 5/4mm wetsuit along with some boots and a hood.

Current weather

6°C / 43°F
(scattered clouds)
Partly cloudy
Wind
15 mph
Humidity
86%

The measurements for the water temperature in Cairnryan, Scotland are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Cairnryan water temperature derived from many years of historical sea surface temperature data.

Cairnryan average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Cairnryan
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 7.6 7.2 6.9 7.7 9.1 9.7 11.8 13.3 13.6 12.6 11.2 9.2
Max °C 10 9.1 9.1 9.9 10.9 13.9 15.4 15.1 14.9 14.2 13.4 11.8
Min °F 46.6 45.7 45.3 46.7 49.1 51.1 54.7 56.7 57 55.3 53 49.6
Max °F 49 47.6 47.5 48.9 50.9 55.3 58.3 58.5 58.3 56.9 55.2 52.2

The warmest water temperature is in August with an average around 57.6°F / 14.2°C. The coldest month is March with an average water temperature of 46.4°F / 8.0°C.

7 day tide forecast for Cairnryan

SatSunMonTueWedThuFri
  • High 05:48am
    (2.71m)
  • Low 12:31pm
    (1.22m)
  • High 06:08pm
    (2.63m)
  • Low 12:56am
    (1.27m)
  • High 06:51am
    (2.66m)
  • Low 01:57pm
    (1.15m)
  • High 07:19pm
    (2.56m)
  • Low 02:14am
    (1.25m)
  • High 08:51am
    (2.7m)
  • Low 03:04pm
    (0.95m)
  • High 09:19pm
    (2.61m)
  • Low 03:20am
    (1.12m)
  • High 10:03am
    (2.87m)
  • Low 03:56pm
    (0.7m)
  • High 10:30pm
    (2.77m)
  • Low 04:13am
    (0.93m)
  • High 10:56am
    (3.06m)
  • Low 04:40pm
    (0.43m)
  • High 11:22pm
    (2.92m)
  • Low 04:57am
    (0.71m)
  • High 11:35am
    (3.23m)
  • Low 05:21pm
    (0.19m)
  • High 12:04am
    (3.05m)
  • Low 05:39am
    (0.5m)
  • High 12:18pm
    (3.37m)
  • Low 06:02pm
    (0.02m)
7 day tide times for Cairnryan

*These tide times are estimates based on the nearest accurate location (Portpatrick, Scotland) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.