Climate averages 1991–2020
Rotherham weather
in September.
A mild, moderately wet month: the 4th warmest and the joint 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Rotherham: daytime highs average 17.3°C and nights cool to about 10.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 58 mm of rain on roughly 10 days, which makes September a moderately wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average September day.
The nearest other city in this atlas is Sheffield (9 km away). In September its highs average 17.1°C, about as warm as Rotherham, with 63 mm of rain.
Among the 143 cities listed in the United Kingdom, Rotherham ranks joint 79th of 143 for the warmest September highs and joint 82nd of 143 for the driest September (rainfall, lowest first). The mean September high of those 143 cities is 17.3°C; Rotherham is 0.1°C warmer than that mean.
From September to October, average highs fall by 3.8°C to 13.5°C, and monthly rainfall rises from 58 mm to 61 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
Rotherham climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.8°C2.2°C | 2.2°C | 53 | 12.1 | 8.18 h |
| February | 7.5°C2.0°C | 2.0°C | 47 | 10.6 | 9.810 h |
| March | 9.7°C3.0°C | 3.0°C | 49 | 10.9 | 11.812 h |
| April | 12.4°C4.6°C | 4.6°C | 58 | 11.7 | 14.014 h |
| May | 15.5°C7.6°C | 7.6°C | 58 | 11.5 | 15.916 h |
| June | 18.2°C10.6°C | 10.6°C | 74 | 12.2 | 16.917 h |
| July | 20.3°C12.7°C | 12.7°C | 69 | 12.1 | 16.516 h |
| August | 19.9°C12.7°C | 12.7°C | 73 | 11.9 | 14.815 h |
| September, selected | 17.3°C10.6°C | 10.6°C | 58 | 9.7 | 12.813 h |
| October | 13.5°C7.9°C | 7.9°C | 61 | 11.5 | 10.611 h |
| November | 9.6°C4.8°C | 4.8°C | 61 | 12.1 | 8.79 h |
| December | 7.0°C2.6°C | 2.6°C | 60 | 12.1 | 7.68 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
- Sheffield in SeptemberUnited Kingdom · 9 kmHigh 17.1°C · Low 10.5°C · 63 mm rain
- Barnsley in SeptemberUnited Kingdom · 16 kmHigh 16.5°C · Low 9.8°C · 63 mm rain
- Doncaster in SeptemberUnited Kingdom · 18 kmHigh 17.5°C · Low 10.3°C · 58 mm rain
- Chesterfield in SeptemberUnited Kingdom · 20 kmHigh 17.0°C · Low 10.2°C · 64 mm rain
- Wakefield in SeptemberUnited Kingdom · 30 kmHigh 16.8°C · Low 10.1°C · 60 mm rain
- High Peak in SeptemberUnited Kingdom · 33 kmHigh 15.3°C · Low 9.1°C · 75 mm rain
- Mansfield in SeptemberUnited Kingdom · 35 kmHigh 17.0°C · Low 9.9°C · 57 mm rain
- Huddersfield in SeptemberUnited Kingdom · 37 kmHigh 16.4°C · Low 10.3°C · 69 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 Rotherham) is explained once on the Rotherham year overview and on the Sources, method and limits page.
Doncaster lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.