Climate averages 1991–2020
Eastbourne weather
in September.
A mild, moderately wet month: the 3rd warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Eastbourne: daytime highs average 17.6°C and nights cool to about 13.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 66 mm of rain on roughly 11 days, which makes September a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 41 min on an average September day.
The nearest other city in this atlas is Hastings, United Kingdom (23 km away). In September its highs average 18.1°C, 0.5°C warmer than Eastbourne, with 66 mm of rain.
Among the 143 cities listed in the United Kingdom, Eastbourne ranks joint 64th of 143 for the warmest September highs and joint 107th of 143 for the driest September (rainfall, lowest first). The mean September high of those 143 cities is 17.3°C; Eastbourne is 0.3°C warmer than that mean.
From September to October, average highs fall by 2.9°C to 14.6°C, and monthly rainfall rises from 66 mm to 113 mm.
The annual picture
September 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
Eastbourne climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.9°C4.9°C | 4.9°C | 95 | 14.6 | 8.59 h |
| February | 7.6°C4.5°C | 4.5°C | 66 | 11.6 | 10.010 h |
| March | 9.1°C5.5°C | 5.5°C | 50 | 9.9 | 11.812 h |
| April | 11.3°C7.2°C | 7.2°C | 46 | 9.0 | 13.814 h |
| May | 14.1°C9.9°C | 9.9°C | 47 | 8.5 | 15.515 h |
| June | 16.6°C12.5°C | 12.5°C | 45 | 8.7 | 16.416 h |
| July | 18.6°C14.8°C | 14.8°C | 48 | 8.4 | 16.016 h |
| August | 19.2°C15.4°C | 15.4°C | 61 | 9.5 | 14.515 h |
| September, selected | 17.6°C13.8°C | 13.8°C | 66 | 10.6 | 12.713 h |
| October | 14.6°C11.4°C | 11.4°C | 113 | 14.3 | 10.811 h |
| November | 11.2°C8.1°C | 8.1°C | 121 | 15.8 | 9.09 h |
| December | 8.7°C5.8°C | 5.8°C | 109 | 14.4 | 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
September in nearby cities
- Hastings, United Kingdom in SeptemberUnited Kingdom · 23 kmHigh 18.1°C · Low 12.9°C · 66 mm rain
- Brighton in SeptemberUnited Kingdom · 31 kmHigh 17.8°C · Low 12.7°C · 67 mm rain
- Hove in SeptemberUnited Kingdom · 32 kmHigh 17.8°C · Low 12.7°C · 67 mm rain
- Worthing in SeptemberUnited Kingdom · 47 kmHigh 17.9°C · Low 12.8°C · 66 mm rain
- Crawley in SeptemberUnited Kingdom · 50 kmHigh 18.1°C · Low 11.2°C · 50 mm rain
- Maidstone in SeptemberUnited Kingdom · 58 kmHigh 18.6°C · Low 11.9°C · 50 mm rain
- Purley in SeptemberUnited Kingdom · 69 kmHigh 18.1°C · Low 10.9°C · 51 mm rain
- Gillingham in SeptemberUnited Kingdom · 71 kmHigh 18.3°C · Low 11.9°C · 45 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 Eastbourne) is explained once on the Eastbourne year overview and on the Sources, method and limits page.