Slough weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: May – September
What is the weather like in Slough in August?
In August, Slough is warm: daytime highs average 21 °C, and nights cool down to about 13 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 60 mm in total. All in all, August is a good month for a holiday in Slough.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 79 | 78 | 77 |
| Day | 21° | 21° | 19° |
| Night | 13° | 13° | 11° |
| Sun | 7 h | 7 h | 5 h |
| Rain days | 11 | 11 | 9 |
More details for August
- Daylight
- 14 h 41 min05:47 – 20:28
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 65 %on averageAll months
- Hot days
- 1 day30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/London
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %58 %
- Few rainy daysweight 30 %53 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Slough in August: quick answers
Is Slough hot in August?
Warm rather than hot: in August, daytime highs in Slough average 21 °C and nights cool to about 13 °C.
Does it rain much in Slough in August?
Rain is frequent, with about 11 rainy days and 60 mm in total.
Slough month by month
The whole year in SloughAll destinations: United KingdomWhere to go in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences