Southampton Weather

9°C

Southampton, Hampshire, United Kingdom

Updated: 05/11/2026 11:45

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UK Extremes

High Temp

14.1° C

Topcliffe

Low Temp

-4.9° C

Aviemore

Precipitation

2.2 mm

Kirkwall Airport

Wind Gust

41.6 mph

Warcop Range

Site Updates

UV Index Forecast for the Southampton Area

Predictions are for local solar noon and assume perfectly clear sky conditions

Today

1.1

Low

Friday

1.0

Low

Saturday

1.0

Low

Sunday

1.0

Low

Monday

1.1

Low

Tuesday

1.1

Low

UV History

Each day's forecast peak, logged automatically as this page is visited - building up day by day since 28 Oct.

What is the UV Index?

Some exposure to sunlight can be enjoyable; however, too much could be dangerous. Overexposure to the sun's ultraviolet (UV) radiation can cause immediate effects such as sunburn and long-term problems such as skin cancer and cataracts. The UV Index, developed by the U.S. National Weather Service and the Environmental Protection Agency (EPA), measures the expected risk of overexposure on a scale of 1 to 11+, taking cloud cover and other local conditions into account. A few simple precautions go a long way to reducing the risk of sun-related illness.

UV Index Scale & Sun Protection Guide

LOW — Index 1–2

Wear sunglasses on bright days. In winter, reflection off snow can nearly double UV strength. If you burn easily, cover up and use sunscreen — but if you burn in these conditions, sun exposure probably isn't the day's biggest risk.

MEDIUM — Index 3–5

Cover up exposed skin and use sunscreen for long periods outside. Stay in the shade between midday and 3pm when the sun is strongest — most sunburn happens under these conditions because people assume there's no need for caution.

HIGH — Index 6–7

Protection against sunburn is needed. Reduce time in the sun between 11am and 4pm. Cover up, wear a hat and sunglasses, and use sunscreen.

VERY HIGH — Index 8–10

Take extra precautions — unprotected skin can burn quickly. Avoid exposure between 10am and 4pm; otherwise seek shade, cover up, wear a hat and sunglasses, and use sunscreen.

EXTREME — Index 11+

Seek shade, cover up, wear a hat and sunglasses, and use sunscreen. Avoid the sun between 9am and 5pm. Unprotected skin can burn in minutes. White sand and other bright surfaces reflect UV and speed up burn times further.