Monthly climate guide
Southampton weather in August
With highs near 22°C (72°F) and lows around 13°C (55°F), August feels warm in Southampton. Rainfall averages about 70 mm (some rain) and the sky is often cloudy. Daytime highs are about the same as July and 2°C warmer than September.
What stands out in August
- Southampton is usually about 4°C warmer than Bournemouth, 40 km away, in August.
- August is Southampton's second warmest month.
- In Southampton, August is late summer.
Avg high
22°C
72°F
Avg low
13°C
55°F
Rainfall
70 mm
some rain
Humidity
76%
relative
Sky
59%
cloud · often cloudy
Southampton weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 3°C / 37°F | 84 mm | 94% | 73% |
| February | 8°C / 46°F | 2°C / 36°F | 64 mm | 92% | 69% |
| March | 10°C / 50°F | 3°C / 37°F | 56 mm | 88% | 64% |
| April | 14°C / 56°F | 5°C / 41°F | 50 mm | 84% | 55% |
| May | 17°C / 62°F | 8°C / 46°F | 49 mm | 80% | 58% |
| June | 20°C / 67°F | 11°C / 51°F | 63 mm | 78% | 61% |
| July | 23°C / 73°F | 13°C / 55°F | 53 mm | 73% | 55% |
| August | 22°C / 72°F | 13°C / 55°F | 70 mm | 76% | 59% |
| September | 20°C / 68°F | 11°C / 51°F | 51 mm | 80% | 58% |
| October | 16°C / 60°F | 9°C / 47°F | 87 mm | 87% | 68% |
| November | 11°C / 52°F | 6°C / 42°F | 85 mm | 92% | 74% |
| December | 9°C / 48°F | 4°C / 39°F | 100 mm | 94% | 74% |
What to pack for August
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is August a good time to visit Southampton?
Compare the months in the chart above to find your ideal window.
Best time to visit Southampton →Other United Kingdom cities in August
Cite or embed this data
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Southampton weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/uk/southampton/august
<a href="https://weathercompare.eu/weather/uk/southampton/august">Southampton weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/uk/southampton" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Southampton weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/uk/southampton/august">Southampton weather in August</a> – WeatherCompare</p>
Southampton in August: quick answers
Is August a good time to visit Southampton?
August is a reasonable time for Southampton: highs around 22°C and about 70 mm of rain, though not one of the three best months.
How warm is Southampton in August?
Average highs are about 22°C (72°F) and average lows about 13°C (55°F), based on 10 years of daily data.
Does it rain a lot in Southampton in August?
Southampton typically gets around 70 mm of rain in August — some rain.
Figures are long-term averages for the area around Southampton (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.