Today's Weather Forecast - Southampton

Today's weather in Southampton. high 22°C (72°F), low 15°C (59°F). Partly Cloudy.

Today’s Hourly Weather Outlook

Morning6 AM – Noon17°
Wind speed
9 km/h
Rain probability
12%
AfternoonNoon – 6 PM21°
Wind speed
12 km/h
Rain probability
0%
Evening6 PM – Midn19°
Wind speed
11 km/h
Rain probability
0%
NightMidn – 6 AM17°
Wind speed
15 km/h
Rain probability
56%

24-Hour Rain & Temperature Forecast

Sunrise & Sunset

Sunrise
Dawn 6:04 AM
Total Daylight
73% of day elapsedSolar noon 1:01 PM
Sunset
Dusk 7:58 PM
Remaining3h 33m
Solar elevation31°
vs yesterday-6 min

Air Quality Index & Health Advice

Air Quality Index

Air quality level
Good
Dominant pollutant
Dominant: O3
Monitoring station
Southampton Centre, United Kingdom
PM2.5
13μg/m³
PM10
6μg/m³
O₃
22.1ppb
NO₂
3.7ppb
SO₂
0.6ppb
0Good → Hazardous300+

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Southampton is forecast to reach a high of 22°C today, with an overnight low around 15°C. That's 2° above the long-term average high of 20°C for this time of year. It continues a recent pattern — 24 of the last 28 days with published data have run warmer than normal. Expect a fair chance of rain (56% probability) and a gentle breeze averaging 15 km/h. Air quality is currently good (AQI 23), with no notable outdoor health concerns.

Today vs Normal

22°C+2° above normal

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

24 of the last 28 days with published data ran above normal.

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

2026-08-28: 24°C24°2026-08-29: 20°C20°2026-08-30: 22°C22°2026-08-31: 23°C23°2026-09-01: 23°C23°2026-09-02: 21°C21°2026-09-03: 24°C24°2026-09-04: 22°C22°2026-09-05: 23°C23°2026-09-06: 26°C26°2026-09-07: 23°C23°2026-09-08: 20°C20°

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.