Windermere Weather in September
In Windermere, September brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.
Rainfall in Windermere in September
Typically, you can expect about 19 days of rain this month, with 119 mm (4.7 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Windermere in September
September in Windermere brings typical temperatures with highs around 17°C (63°F) and lows of 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Windermere in September
The month brings about 142 hours of sunlight, offering a comfortable mix of sun and overcast.If you prefer dry days with pleasant temperatures, May, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Windermere's climate page.
Windermere Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
17°C (63°F)
Chance of Rain
62%
Precipitation
119 mm (4.7 in)
Rainy days
19 days
Sunshine
142 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Windermere typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Windermere in September
Browse day-by-day weather records for Windermere spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Windermere historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Windermere.
- On September 8, 2021, temperatures climbed to 27°C (81°F), marking the warmest September day on record.
- The coldest September day was on September 26, 2007, with a maximum of 9°C (48°F).
- Windermere registered its coldest September night on September 22, 2025, with temperatures dropping to 0°C (32°F).
- The wettest day in September Windermere was on September 20, 2023 with 57 mm (2.2 in) of precipitation.
Best Places in the United Kingdom in September
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in September →
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What to Wear in Windermere in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Windermere in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Windermere's climate page.
See the full Windermere climate overview or explore weather in the United Kingdom.
