Lower Swanwick Weather in September

September in Lower Swanwick brings pleasant temperatures, with highs of 20°C (68°F) and nights dropping to 12°C (54°F). Rainfall is on the higher side this month, averaging around 62 mm (2.4 in), so keep a rain jacket handy.

Rainfall in Lower Swanwick in September

Historically, September sees about 12 days of rain, with a monthly average of 62 mm (2.4 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Lower Swanwick in September

The perfect temperature in Lower Swanwick in September makes it a solid month to visit, with 20°C (68°F) during the day and 12°C (54°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Lower Swanwick in September

You can expect a moderate amount of sunlight, with approximately 149 hours. This means a pleasant mix of sun and overcast.

Average water temperature in September

The water is 17°C (63°F) this month — cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Lower Swanwick's climate page.

Lower Swanwick Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 20°C (68°F)  

Water Temperature 17°C (63°F) *  

Chance of Rain 39%  

Precipitation 62 mm (2.4 in)  

Rainy days 12 days  

Humidity 82% *  

Sunshine 149 hours *  

Percentage Sunshine 44% *  

* Data from: Southampton, the United Kingdom (8 KM, 5 Miles).

What to Wear in Lower Swanwick in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Expect water temperatures of around 17°C (63°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Lower Swanwick in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Lower Swanwick's climate page.

More climate data for Lower Swanwick

Temperature Rainfall Sunshine Humidity Water Temp

See the full Lower Swanwick climate overview or explore weather in the United Kingdom.