See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
18°
Overcast
Feels Like: 17°
Min: 13°
Max: 22°
The next few hours will be overcast, with today reaching 22°C and dropping to 12°C. The coming days will be mostly clear
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:49
Sunrise
19:11
Sunset
Moon
Waxing Crescent
12:05
Moonrise
20:23
Moonset
Daily Forecast
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Wednesday
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Friday
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Thursday
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Weather in Southampton today, September 15, 2026
Southampton stays under cloudy skies on September 15, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. Expect a grey start, with morning cloud around 100% by 08:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 22°C and cools toward 13°C. The air stays humid, with relative humidity between 57% and 89% and the peak around 23:00. A lighter breeze peaks around 16:00 near 5.6 km/h.
Afternoon skies stay clogged, peaking close to 100% near 12:00. The grey theme continues rather than clearing out. Visibility holds near 33.2 km, though it can fall to 23.3 km. Expect sunrise at 06:49, sunset at 19:11, and 12 hours 21 minutes of sunlight today overall.
In short, cloud leads the story in Southampton on September 15, 2026; expect limited sun and a peak around 22°C.
Frequently asked questions about weather in Southampton
How warm does it get in Southampton?
The warmest month in Southampton is July, with average high temperatures of 22°C. The average temperature during this period is around 18°C.
How cold does it get in Southampton?
The coldest month in Southampton is January, with average low temperatures of 2°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Southampton?
The wettest month in Southampton is October, with an average of 94mm of precipitation.
What is the driest time of year in Southampton?
The driest month in Southampton is April, with an average of 49mm of precipitation.
