Windermere weather in August

August in Windermere: nice, rainy, with clean air — fine if you can take 18 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Windermere🇬🇧 United Kingdom · British Isles · Trekking84
  1. 56Jan
  2. 61Feb
  3. 71Mar
  4. 81Apr
  5. 87May
  6. 90Jun
  7. 88Jul
  8. 84Aug
  9. 78Sep
  10. 69Oct
  11. 62Nov
  12. 54Dec

#4 of 12 months in Windermere · #527 of 1413 destinations to visit in August · comfort 84/100 (tier A)

Days
18°C
Nights
11°C
Wet days
18
Sun
8.9 h
Humidity
85%
Daylight
15 h
Windermere, United Kingdom
Photo: Patrick Bate · Pexels

Traveller notes on Windermere in August

Notes from nearby Douglas (105 km away)

Windermere doesn't have its own notes for August yet — these are about Douglas, close enough to share the season.

Isle of Man-forum threads on summer weather are blunt that the TT course running over mountains on an island makes conditions genuinely impossible to predict - the standing advice is to pack layers for everything from fierce sun to getting soaked in a gale, since June, July and August are all described as a lucky dip regardless of which one you book. August itself doesn't buck that pattern: real wind off the sea, real rain mixed through real sun within the same day. The record: 18.5C days feeling like 17C, 13.5C nights, 77mm of rain across 11.4 days, humidity a damp 83 percent, 10.3 hours of sun, a 16.2C sea and wind averaging 34 km/h - cool, breezy and changeable even at the height of summer.
PromenadeAugustRegular · August · 1 month ago · about Douglas · Read more on Tripadvisor ↗

Other months in Windermere

Windermere-forum threads on a February visit describe several seasonal attractions as not open yet, posters noting the ferry to Red Nab doesn't start until March and various other activities wait until Easter. Regulars call walking still rewarding this time of year, several posters planning entire February trips built around train access and lakeside routes rather than boat trips. Posters call road access reliable even in snowy conditions, the A591 typically gritted or plowed and staying open through most winter weather. Regulars recommend real caution around a non-refundable booking regardless of road reliability, weather here still capable of disrupting plans even when the main roads stay clear. Posters recommend real waterproof layers regardless of forecast, February conditions here shifting fast between a clear morning and a genuine downpour. The record: 7.4C days feeling like 5C, 2C nights, an extraordinarily high 132mm across 16 days and 84 percent humidity.
WindermereFebruaryRegular · February · 1 month ago · Read more on Tripadvisor ↗
Windermere-forum threads on a January visit call the weather genuinely unpredictable, posters describing cold, possibly wet, possibly windy conditions as the baseline with darkness setting in by half four. Regulars call the tradeoff a real one though, considerably fewer crowds and better accommodation deals than summer. Posters recommend proper waterproofs, sturdy boots, a map and a compass for anyone walking, fog here capable of rolling in with little warning. Regulars call Kirkstone Pass the most weather-vulnerable major road locally, snow and ice there a genuine possibility though not dramatically more common than elsewhere. Posters call many smaller B&Bs closed for their own winter break in January, checking availability directly standing advice. Regulars recommend planning any walk around the short daylight hours, getting back before dusk a real priority. The record: 6.4C days feeling like 3C, 1C nights, an extraordinarily high 128.9mm across over 15 days and 92 percent humidity.
WindermereJanuaryRegular · January · 1 month ago · Read more on Tripadvisor ↗
Windermere-forum threads on March weather are candid: expect anything, posters describing conditions as capable of turning mild and sunny or properly wet and windy within the same week. Regulars call the danger of serious accumulation mostly past by March, though the high fells can still hold real snow on north-facing ground. Posters recommend the short Orrest Head climb right from town for an easy view without much commitment, a reasonable option on a changeable day. Regulars call Ambleside and Grasmere both a short bus ride away, offering considerably more challenging routes for anyone properly equipped. Posters recommend real waterproof layers regardless of how the morning starts, weather here notoriously quick to flip. Regulars call a lakeside stroll along Claife Heights a genuinely pleasant lower-stakes option on a rougher day. The record: 9.1C days feeling like 6C, 2C nights, an extraordinarily high 106.9mm across over 15 days and 85 percent humidity.
WindermereMarchRegular · March · 1 month ago · Read more on Tripadvisor ↗
Windermere-forum threads on mid-September weather describe daytime readings anywhere from the mid-teens to low-20s Celsius, a real spread depending on the week and year, with a genuine chill in the morning and evening regardless of how warm the afternoon runs. Posters are consistent the Lake District's climate stays changeable and unpredictable through September, real rain likely at some point during any multi-day stay. Regulars describe early September as sometimes delivering a run of still, sunny days, though nothing is guaranteed and posters call it genuinely pot luck year to year. September and October are quieter, often better months than peak summer for anyone flexible, crowds noticeably thinner around the lake. Layering remains the standing advice, temperatures shifting hour to hour and place to place. The record: 16.3C days feeling like 15C, 8.7C nights, an extraordinarily high 176mm across nearly 17 days and 86 percent humidity.
WindermereSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Windermere's card on the map.

Windermere climate normals — August

Daytime high18°C / 65°F😎 nice
Nighttime low11°C / 52°F
Feels like (high)18°C / 64°F
Sea temperature18°C / 65°F🧊 bracing
Rainfall128 mm / 5 in🌧 rainy
Rainy days18 days
Humidity85%💦 very humid
Dew point12°C / 54°F
Sunshine8.9 h/day
Daylight14.8 h
Wind19 km/h / 12 mph
Air quality (US AQI)29🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Windermere in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsPeak Lakes summer, Summer holidays in United Kingdom, school holidays in 6 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Windermere's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherWindermere's weather peaks May–July, best around June.

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Best weatherFair weatherToughest weather

What's on in Windermere in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Season

    Midge season

    20 May – 15 Sep · usuallyInsects & disease

    Still, damp evenings by the water and in the wooded valleys are when they are worst; the open fells and anywhere with a breeze are fine. Nowhere near a Scottish summer, but enough to move a picnic.

  • Holiday

    Peak Lakes summer

    18 Jul – 1 SepSchool holidaysCrowdedBook early

    The A591 through Ambleside crawls, Bowness pier is a queue and the popular fell car parks are full before nine. Starting early or walking from the village solves most of it. Source ↗

What's on around the world in August →

Nearby, and something's on

Within 300 km of Windermere — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Windermere?

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Windermere in August — FAQ

Is August a good time to visit Windermere?
August in Windermere: nice, rainy, with clean air — fine if you can take 18 rainy days. It ranks #4 of 12 months for Windermere on SeasonMap's comfort score (84/100).
What is the weather like in Windermere in August?
In August, Windermere averages a daily high of 18.3°C and a low of 11°C, with about 127.5 mm of rain over roughly 18.2 rainy days.
What is the air quality in Windermere in August?
Windermere has a mean US Air Quality Index of about 29 in August.

Within 300 km: Liverpool's International Beatleweek on 26 Aug – 1 Sep, and Manchester's Manchester Pride around 20 Aug – 1 Sep.