Water Temperature of the Celtic Sea Near Sennen, England

Current Water Temperature

11.9°C

Measurement Time: Tuesday, December 16, 2025, 12:00 PM GMT

Temperature Locations

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Local Points of Interest

Isles of Scilly; Celtic Sea

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Celtic Sea

Station Name: Sevenstones Lightship
Station Type: Fixed
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
Offshore
Sennen, GB-ENG

GPS Coordinates: 50.102, -6.1

Nearby Water Temperatures

Atlantic Ocean, Brest, FR-BFC (332.5 km)
English Channel, Brighton, GB-ENG (434.8 km)

Weather Near Sennen, England

Current Weather

11.2°C
Sunny
Conditions: Sunny
Humidity: 71%
Feels Like: 8.7°C
Wind: NNW 14.1 mph
Wind Gusts: 19.2 mph
Pressure: 29.94 in
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 6 mi
UV Index: 0.5

Five Day Weather Forecast

Sunny
Tue
H: 10°C
L: 10°C
Moderate rain
Wed
H: 11°C
L: 10°C
Heavy rain
Thu
H: 11°C
L: 10°C
Patchy rain nearby
Fri
H: 11°C
L: 10°C
Moderate rain
Sat
H: 11°C
L: 8°C

Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 7.85 μg/m3
Carbon Monoxide: 133.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 78 μg/m3

Astronomical

Sunrise: 8:18 AM
Sun Transit: 12:20 AM
Sunset: 4:23 PM
Daylight: 8 hrs 5 mins
Moonrise: 5:00 AM
Moon Transit: 9:26 AM
Moonset: 1:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
8:05 AM - 10:35 AM

Minor Periods

1:13 PM - 2:43 PM
4:30 AM - 6:00 AM

Action Rating: 3 out of 5

Heavy rain could lead to some travel disruption and possible flooding.

Effective: Thu January 1, 1970, 1:00 AM
Expires: Wed December 17, 2025, 11:59 PM

A period of rain, heavy at times, especially over high ground, will move east across this region during Wednesday. Coming off the back of recent very wet weather, some travel disruption and flooding is possible. 15-25 mm of rain is likely to accumulate quite widely across the warning area, but 40-60 mm is possible over the high ground of Dartmoor and the hills of south Wales. Rain should clear to the east during the latter part of Wednesday into the early hours of Thursday. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Check if your property could be at risk of flooding. If so, consider preparing a flood plan and an emergency flood kit. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.


Heavy rain could lead to some travel disruption and possible flooding.: UPDATED

Effective: Thu January 1, 1970, 1:00 AM
Expires: Wed December 17, 2025, 11:59 PM

Information on update: Warning area reduced in the east, whilst moving from medium to low impacts in response to lower forecast rainfall accumulations. A period of rain, heavy at times, especially over high ground, will move slowly east across this region during Wednesday. Coming off the back of recent very wet weather, some travel disruption and flooding is likely across much of the warning area. 10-20 mm of rain is likely to accumulate quite widely across the warning area, but 40-60 mm is possible over the high ground of Dartmoor and the hills of south Wales. Rain should clear to the east during Wednesday evening and into the early hours of Thursday. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Check if your property could be at risk of flooding. If so, consider preparing a flood plan and an emergency flood kit. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.


Tuesday, December 16, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 10.3°C
Average Humidity: 67%
Chance of Rain: 0%
Wind: 16.8 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 2.75 μg/m3
PM10: 7.93 μg/m3
Carbon Monoxide: 131.61 μg/m3
Nitrogen Dioxide: 1.29 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 78.16 μg/m3

Astronomical

Sunrise: 8:18 AM
Sun Transit: 12:20 AM
Sunset: 4:23 PM
Daylight: 8 hrs 5 mins
Moonrise: 5:00 AM
Moon Transit: 9:26 AM
Moonset: 1:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
8:05 AM - 10:35 AM

Minor Periods

1:13 PM - 2:43 PM
4:30 AM - 6:00 AM

Action Rating: 3 out of 5

Wednesday, December 17, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 11.1°C
Average Humidity: 82%
Chance of Rain: 88%
Wind: 37.1 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 4.13 μg/m3
PM10: 16.33 μg/m3
Carbon Monoxide: 125.69 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 81.6 μg/m3

Astronomical

Sunrise: 8:19 AM
Sun Transit: 12:20 AM
Sunset: 4:23 PM
Daylight: 8 hrs 4 mins
Moonrise: 6:12 AM
Moon Transit: 10:12 AM
Moonset: 2:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.5%

Best Times for Fishing or Hunting

Major Periods

8:51 AM - 11:21 AM
9:42 AM - 12:12 AM

Minor Periods

1:36 PM - 3:06 PM
5:42 AM - 7:12 AM

Action Rating: 2 out of 5

Thursday, December 18, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 10.5°C
Average Humidity: 84%
Chance of Rain: 84%
Wind: 32 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.75 μg/m3
PM10: 9.26 μg/m3
Carbon Monoxide: 120.69 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 80.51 μg/m3

Astronomical

Sunrise: 8:19 AM
Sun Transit: 12:21 AM
Sunset: 4:23 PM
Daylight: 8 hrs 4 mins
Moonrise: 7:21 AM
Moon Transit: 11:01 AM
Moonset: 2:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

9:40 AM - 12:10 AM
10:31 AM - 1:01 PM

Minor Periods

2:07 PM - 3:37 PM
6:51 AM - 8:21 AM

Action Rating: 3 out of 5

Friday, December 19, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 10.4°C
Average Humidity: 66%
Chance of Rain: 88%
Wind: 22.8 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 7.94 μg/m3
PM10: 13.05 μg/m3
Carbon Monoxide: 130.13 μg/m3
Nitrogen Dioxide: 1.03 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 89.6 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:21 AM
Sunset: 4:24 PM
Daylight: 8 hrs 4 mins
Moonrise: 8:25 AM
Moon Transit: 11:52 AM
Moonset: 3:19 PM
Moon Phase: New
Moon Illumination: 1.1%

Best Times for Fishing or Hunting

Major Periods

10:32 AM - 1:02 PM
11:22 AM - 1:52 PM

Minor Periods

2:49 PM - 4:19 PM
7:55 AM - 9:25 AM

Action Rating: 5 out of 5

Saturday, December 20, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 10.7°C
Average Humidity: 82%
Chance of Rain: 89%
Wind: 35.6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 8.71 μg/m3
PM10: 14.3 μg/m3
Carbon Monoxide: 127.99 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 94.15 μg/m3

Astronomical

Sunrise: 8:21 AM
Sun Transit: 12:22 AM
Sunset: 4:24 PM
Daylight: 8 hrs 3 mins
Moonrise: 9:18 AM
Moon Transit: 12:44 AM
Moonset: 4:14 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

11:24 AM - 1:54 PM
12:14 AM - 2:44 PM

Minor Periods

3:44 PM - 5:14 PM
8:48 AM - 10:18 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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