Water Temperature of the Celtic Sea Near Sennen, England

Current Water Temperature

12.3°C

Measurement Time: Tuesday, December 9, 2025, 12:00 AM 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

13.6°C
Light drizzle
Conditions: Light drizzle
Humidity: 91%
Feels Like: 9.6°C
Wind: S 45.6 mph
Wind Gusts: 70.6 mph
Pressure: 29.44 in
Precipitation: 0.01 in
Cloud Cover: 100%
Visibility: 1 mi
UV Index: 0

Five Day Weather Forecast

Moderate rain
Tue
H: 14°C
L: 12°C
Patchy rain nearby
Wed
H: 12°C
L: 12°C
Patchy rain nearby
Thu
H: 12°C
L: 10°C
Patchy rain nearby
Fri
H: 11°C
L: 10°C
Patchy rain nearby
Sat
H: 11°C
L: 10°C

Air Quality

PM2.5: 6.55 μg/m3
PM10: 15.75 μg/m3
Carbon Monoxide: 107.85 μg/m3
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 8:12 AM
Sun Transit: 12:16 AM
Sunset: 4:22 PM
Daylight: 8 hrs 11 mins
Moonrise: 9:46 PM
Moon Transit: 4:24 AM
Moonset: 12:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
3:03 AM - 5:33 AM

Minor Periods

9:16 PM - 10:46 PM
11:35 AM - 1:05 PM

Action Rating: 2 out of 5

Heavy rain may bring some flooding and travel disruption in places on Monday night into Tuesday morning: UPDATED

Effective: Thu January 1, 1970, 1:00 AM
Expires: Tue December 9, 2025, 2:00 PM

Information on update: The warning end time has been brought forward. Outbreaks of rain will become persistent and heavy on Monday night into Tuesday morning. There will naturally be some variation in rainfall totals across the area, but accumulations of 20-40 mm are likely in quite a few places, with 60-80 mm over Dartmoor and high ground in Wales. There is a chance of up to 100 mm falling over the most exposed, prone hills. Given the saturated nature of the ground, this is likely to lead to some flooding in places and transport disruption. Rain will also be accompanied by strengthening southerly winds, which may exacerbate impacts. 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.


Strong winds may cause some disruption on Monday night into Tuesday

Effective: Thu January 1, 1970, 1:00 AM
Expires: Tue December 9, 2025, 4:00 PM

South to southwesterly winds will strengthen on Monday night and remain strong and gusty into Tuesday morning, before gradually easing through Tuesday afternoon. Peak gusts of 40-50 mph are expected fairly widely, but gusts of 60-70 mph will be possible along some exposed coasts and over/to the north of high ground. There is a small chance of gusts in excess of 70 mph over northwest Wales. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

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. If you are on the coast, stay safe during stormy weather by being aware of large waves. Even from the shore large breaking waves can sweep you off your feet and out to sea. Take care if walking near cliffs; know your route and keep dogs on a lead. In an emergency, call 999 and ask for the Coastguard. 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 9, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 12.9°C
Average Humidity: 87%
Chance of Rain: 96%
Wind: 49.9 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 7.11 μg/m3
PM10: 25.44 μg/m3
Carbon Monoxide: 116.89 μg/m3
Nitrogen Dioxide: 1.7 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 79.8 μg/m3

Astronomical

Sunrise: 8:12 AM
Sun Transit: 12:16 AM
Sunset: 4:22 PM
Daylight: 8 hrs 11 mins
Moonrise: 9:46 PM
Moon Transit: 4:24 AM
Moonset: 12:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
3:03 AM - 5:33 AM

Minor Periods

9:16 PM - 10:46 PM
11:35 AM - 1:05 PM

Action Rating: 2 out of 5

Wednesday, December 10, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 11.7°C
Average Humidity: 82%
Chance of Rain: 85%
Wind: 24.8 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 4.89 μg/m3
PM10: 20.51 μg/m3
Carbon Monoxide: 133.76 μg/m3
Nitrogen Dioxide: 1.37 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 78.94 μg/m3

Astronomical

Sunrise: 8:13 AM
Sun Transit: 12:17 AM
Sunset: 4:22 PM
Daylight: 8 hrs 10 mins
Moonrise: 11:04 PM
Moon Transit: 5:13 AM
Moonset: 12:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

4:43 AM - 7:13 AM
3:52 AM - 6:22 AM

Minor Periods

12:00 AM - 12:00 AM
11:51 AM - 1:21 PM

Action Rating: 2 out of 5

Thursday, December 11, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 11.8°C
Average Humidity: 86%
Chance of Rain: 89%
Wind: 32.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 7.62 μg/m3
PM10: 11.99 μg/m3
Carbon Monoxide: 129.95 μg/m3
Nitrogen Dioxide: 1.93 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 81.42 μg/m3

Astronomical

Sunrise: 8:14 AM
Sun Transit: 12:17 AM
Sunset: 4:22 PM
Daylight: 8 hrs 9 mins
Moonrise: 12:04 AM
Moon Transit: 5:58 AM
Moonset: 12:35 AM
Moon Phase: Last Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
4:37 AM - 7:07 AM

Minor Periods

12:05 AM - 1:35 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, December 12, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 10.9°C
Average Humidity: 69%
Chance of Rain: 82%
Wind: 23.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 8.73 μg/m3
PM10: 14.47 μg/m3
Carbon Monoxide: 126.37 μg/m3
Nitrogen Dioxide: 1.02 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 95.62 μg/m3

Astronomical

Sunrise: 8:15 AM
Sun Transit: 12:18 AM
Sunset: 4:22 PM
Daylight: 8 hrs 8 mins
Moonrise: 12:19 AM
Moon Transit: 6:40 AM
Moonset: 12:47 AM
Moon Phase: Last Quarter
Moon Illumination: 40.5%

Best Times for Fishing or Hunting

Major Periods

6:10 AM - 8:40 AM
5:19 AM - 7:49 AM

Minor Periods

12:17 AM - 1:47 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Saturday, December 13, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 10.5°C
Average Humidity: 74%
Chance of Rain: 87%
Wind: 20.8 mph
UV Index: 0.1

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 8:15 AM
Sun Transit: 12:18 AM
Sunset: 4:22 PM
Daylight: 8 hrs 7 mins
Moonrise: 1:29 AM
Moon Transit: 7:20 AM
Moonset: 12:58 AM
Moon Phase: Last Quarter
Moon Illumination: 29.7%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
6:00 AM - 8:30 AM

Minor Periods

12:28 AM - 1:58 PM
12:59 AM - 2:29 AM

Action Rating: 3 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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