Weather in Southampton Today

Live

Current temperature in Southampton: 21°C (70°F). Partly Cloudy. Today's high 21°C (70°F), low 15°C (59°F).

Live · Current ConditionsDay
21°
Partly Cloudy
RealFeel® 20°C
50%Comfortable
High21°
Low15°
12km/hWWind fromWest· Max 15
Gentle Breeze · Gusts 31 km/h
City
00:00AM
UTC+0:00
Sunrise ·
Sunset ·

Today's Daylight Forecast

Overcast
Fri, Sep 112:30 PMDay
12h 54m daylight today24h view
Sunrise6:34 AMDawn 6:04 AM
Daylight remaining4h 57mNoon 1:01 PMTotal 12h 54m
Sunset7:28 PMDusk 7:58 PM
NowOvercast+21°C

Moon & Islamic Calendar

Health & Activity Advice
✅ Good for OutdoorsAQI 12 · Good

Air quality and UV are both favourable great conditions for a walk, run, or outdoor activity.

5-Day Weather Forecast

Full 15-Day Forecast

Atmospheric Details

Wind
12 km/h
W · Gentle Breeze · Max 15 km/h
Humidity
50 %
Comfortable
UV Index
3
Moderate
Visibility
14 km
Excellent
Pressure
1013 hPa
Stable
Dew Point
10°C
Comfortable

Today vs Normal

21°C+1° above normal

The long-term average high for today is 20°C.

17 of the last 19 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

2026-08-19: 24°C24°2026-08-20: 23°C23°2026-08-21: 22°C22°2026-08-22: 23°C23°2026-08-23: 25°C25°2026-08-24: 23°C23°2026-08-25: 27°C27°2026-08-26: 27°C27°2026-08-27: 24°C24°2026-08-28: 24°C24°2026-08-29: 20°C20°2026-08-30: 22°C22°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Health & Activity Advice

✅ Good for Outdoors

UV index is 3 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Conditions are comfortable for outdoor activity at most points during the day today.

Nearby Regional Outlook

Southampton Weather Radar

Live precipitation · Cloud cover · Wind

View live radar →

Frequently Asked Questions

What is the hottest month in Southampton?

The hottest month in Southampton is typically July, with daytime highs averaging around 22.2°C (72°F), based on 10 years of historical weather data. Overnight lows during this period average near 14°C (57°F).

What is the coldest month in Southampton?

The coldest month in Southampton is typically January, with overnight lows averaging around 2.4°C (36°F) and daytime highs near 8.1°C (47°F), based on 10 years of historical weather data.

Does Southampton have a rainy season?

Southampton doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. October is the wettest month on average (about 100 mm), while April is the driest (about 53 mm).

What's the best time of year to visit Southampton?

The best time to visit Southampton is typically June to August, when daytime highs average a comfortable 21.4°C (71°F). Rainfall during this window averages around 58 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Is Southampton's air quality safe right now?

As of the latest reading, Southampton's air quality index (AQI) is 12, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.