Climate averages 1991–2020
Bournemouth weather
in August.
A mild, moderately wet month: the 2nd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Bournemouth: daytime highs average 20.0°C and nights cool to about 14.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 63 mm of rain on roughly 9 days, which makes August a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 32 min on an average August day.
The nearest other city in this atlas is Poole (7 km away). In August its highs average 20.0°C, about as warm as Bournemouth, with 63 mm of rain.
Among the 143 cities listed in the United Kingdom, Bournemouth ranks joint 66th of 143 for the warmest August highs and joint 57th of 143 for the driest August (rainfall, lowest first). The mean August high of those 143 cities is 19.7°C; Bournemouth is 0.3°C warmer than that mean.
From August to September, average highs fall by 2.1°C to 17.9°C, and monthly rainfall falls from 63 mm to 54 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bournemouth climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.1°C4.5°C | 4.5°C | 71 | 12.3 | 8.59 h |
| February | 8.1°C4.1°C | 4.1°C | 54 | 9.9 | 10.010 h |
| March | 9.9°C5.0°C | 5.0°C | 49 | 9.6 | 11.812 h |
| April | 12.4°C6.6°C | 6.6°C | 53 | 10.1 | 13.814 h |
| May | 15.5°C9.5°C | 9.5°C | 51 | 9.7 | 15.515 h |
| June | 18.1°C12.3°C | 12.3°C | 51 | 9.7 | 16.416 h |
| July | 20.1°C14.3°C | 14.3°C | 47 | 9.3 | 16.016 h |
| August, selected | 20.0°C14.6°C | 14.6°C | 63 | 9.4 | 14.515 h |
| September | 17.9°C13.0°C | 13.0°C | 54 | 9.0 | 12.713 h |
| October | 14.5°C10.6°C | 10.6°C | 82 | 11.9 | 10.811 h |
| November | 11.1°C7.5°C | 7.5°C | 84 | 12.2 | 9.09 h |
| December | 8.7°C5.3°C | 5.3°C | 78 | 11.8 | 8.18 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Poole in AugustUnited Kingdom · 7 kmHigh 20.0°C · Low 14.6°C · 63 mm rain
- Southampton in AugustUnited Kingdom · 39 kmHigh 20.4°C · Low 13.9°C · 65 mm rain
- Portsmouth in AugustUnited Kingdom · 56 kmHigh 20.6°C · Low 14.1°C · 64 mm rain
- Bath in AugustUnited Kingdom · 80 kmHigh 19.8°C · Low 12.6°C · 67 mm rain
- Basingstoke in AugustUnited Kingdom · 82 kmHigh 20.6°C · Low 12.9°C · 64 mm rain
- Swindon in AugustUnited Kingdom · 93 kmHigh 20.2°C · Low 12.5°C · 65 mm rain
- Bristol in AugustUnited Kingdom · 96 kmHigh 20.1°C · Low 13.1°C · 69 mm rain
- Reading in AugustUnited Kingdom · 104 kmHigh 20.9°C · Low 13.1°C · 61 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bournemouth) is explained once on the Bournemouth year overview and on the Sources, method and limits page.
Poole lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.