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

Elevation Above Sea Level: 0 meters

Nearest Address:
Offshore
Brighton, GB-ENG

GPS Coordinates: 50.4, 0

The exceptional spell of hot and humid weather will continue across this region, with impacts to the general population highly likely.

Effective: Fri June 26, 2026, 12:00 AM
Expires: Fri June 26, 2026, 9:00 PM

The heatwave which is affecting a large part of England and Wales is set to continue during Friday. The focus of the highest temperatures on Friday is likely to shift towards east and southeastern England, where maximum temperatures in the shade could exceed 36 Celsius, perhaps rising to 38 Celsius in some places. However, following another very warm night, the greatest likelihood of high impacts are expect to be within this Red warning area during Friday. The heat will be accompanied by high humidity, exacerbating the potential for discomfort and health impacts, with very warm and humid night times also reducing the ability for people to recover overnight. Significant disruption to daily life is likely and the public should take every effort to make precautions and adapt their daily routines where possible to cope with these levels of heat, which up to now have been extremely rare for the UK. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Keep yourself safe by following these simple steps to reduce the likelihood of the heat making you feel unwell; drink plenty of fluids, keep out of the sun and avoid any exercise between 11am-3pm when the sun is strongest and close curtains in rooms that face the sun. If you are going out take water with you, stay in the shade, wear sunscreen and a wide brimmed hat. Keep yourself safe whilst enjoying the water in this weather by following these simple steps: enter the water gradually, avoiding jumping or diving straight in, to reduce your risk of cold-water shock, go to a lifeguarded beach or a supervised swimming area, and, if you, or anyone else, get into difficulty in the water, float on your back. 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. If using public transport, there are many simple things you can do to keep yourself safe; carry water with you, take a small hand-held battery powered fan, if you feel unwell get off at next stop for some fresh air, dress in light fabrics in light colours to help stay cooler, keep an eye on fellow passengers for signs they may be struggling. Help to protect vulnerable people that you know including older people, those with underlying conditions and those who live alone; they may need support to keep cool and stay hydrated. If you are worried about your health, or that of somebody you know, ring NHS 111. 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. Stay up to date with the weather forecast for your area and follow any advice from emergency services and local authorities.

Hot and humid weather is expected to continue, with exceptionally warm temperatures both day and night.

Effective: Fri June 26, 2026, 12:00 AM
Expires: Fri June 26, 2026, 11:59 PM

Very hot weather will continue to affect much of England. Temperatures by day are widely expected to exceed 30 Celsius, with the hottest areas potentially peaking around 38 Celsius in eastern and central England. Overnight, temperatures are unlikely to fall much lower than high teens Celsius, and some places will not fall below low 20s Celsius. These high temperatures will also be accompanied by high humidity. Cooler conditions will slowly begin to become established from the west following this period, although very warm conditions are likely to remain across east and southeastern England through Saturday, albeit not as hot as earlier in the week. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Keep yourself safe by following these simple steps to reduce the likelihood of the heat making you feel unwell; drink plenty of fluids, keep out of the sun and avoid any exercise between 11am-3pm when the sun is strongest and close curtains in rooms that face the sun. If you are going out take water with you, stay in the shade, wear sunscreen and a wide brimmed hat. 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. If using public transport, there are many simple things you can do to keep yourself safe; carry water with you, take a small hand-held battery powered fan, if you feel unwell get off at next stop for some fresh air, dress in light fabrics in light colours to help stay cooler, keep an eye on fellow passengers for signs they may be struggling. Help to protect vulnerable people that you know including older people, those with underlying conditions and those who live alone; they may need support to keep cool and stay hydrated. If you are worried about your health, or that of somebody you know, ring NHS 111. Keep yourself safe whilst enjoying the water in this weather by following these simple steps: enter the water gradually, avoiding jumping or diving straight in, to reduce your risk of cold-water shock, go to a lifeguarded beach or a supervised swimming area, and, if you, or anyone else, get into difficulty in the water, float on your back. 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. Stay up to date with the weather forecast for your area and follow any advice from emergency services and local authorities.

Hot and humid weather will continue over parts of east and southeast England.

Effective: Sat June 27, 2026, 12:00 AM
Expires: Sat June 27, 2026, 9:00 PM

Very hot weather will continue to affect eastern and southeastern England but likely a few degrees cooler than the previous few days. Temperatures will still widely exceed 30 Celsius, peaking around 32 - 34 Celsius in London or East Anglia. Night temperatures remain unlikely to fall below high teens Celsius for most with some places probably remaining in the low 20s Celsius. These temperatures will be accompanied by high humidity. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Keep yourself safe by following these simple steps to reduce the likelihood of the heat making you feel unwell; drink plenty of fluids, keep out of the sun and avoid any exercise between 11am-3pm when the sun is strongest and close curtains in rooms that face the sun. If you are going out take water with you, stay in the shade, wear sunscreen and a wide brimmed hat. 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. If using public transport, there are many simple things you can do to keep yourself safe; carry water with you, take a small hand-held battery powered fan, if you feel unwell get off at next stop for some fresh air, dress in light fabrics in light colours to help stay cooler, keep an eye on fellow passengers for signs they may be struggling. Help to protect vulnerable people that you know including older people, those with underlying conditions and those who live alone; they may need support to keep cool and stay hydrated. If you are worried about your health, or that of somebody you know, ring NHS 111 (or consult NI:DIRECT if in Northern Ireland). Keep yourself safe whilst enjoying the water in this weather by following these simple steps: enter the water gradually, avoiding jumping or diving straight in, to reduce your risk of cold-water shock, go to a lifeguarded beach or a supervised swimming area, and, if you, or anyone else, get into difficulty in the water, float on your back. 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. Stay up to date with the weather forecast for your area and follow any advice from emergency services and local authorities.