Climate averages 1991–2020
Borås weather
in September.
A mild, moderately wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Borås: daytime highs average 15.5°C and nights cool to about 9.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 83 mm of rain on roughly 13 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 52 min on an average September day.
The nearest other city in this atlas is Gothenburg (58 km away). In September its highs average 16.2°C, 0.7°C warmer than Borås, with 93 mm of rain.
Among the 21 cities listed in Sweden, Borås ranks joint 14th of 21 for the warmest September highs and 20th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 15.5°C; Borås is level with that mean.
From September to October, average highs fall by 5.7°C to 9.8°C, and monthly rainfall falls from 83 mm to 81 mm.
The annual picture
September in context
Monthly precipitation
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
Borås climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.9°C-3.1°C | -3.1°C | 70 | 12.1 | 7.37 h |
| February | 1.5°C-3.5°C | -3.5°C | 56 | 10.5 | 9.49 h |
| March | 4.8°C-1.7°C | -1.7°C | 50 | 10.5 | 11.812 h |
| April | 10.7°C2.3°C | 2.3°C | 53 | 10.1 | 14.314 h |
| May | 15.6°C6.9°C | 6.9°C | 71 | 12.5 | 16.617 h |
| June | 18.6°C10.6°C | 10.6°C | 99 | 13.8 | 18.018 h |
| July | 20.6°C13.1°C | 13.1°C | 94 | 13.5 | 17.417 h |
| August | 19.6°C12.9°C | 12.9°C | 106 | 15.0 | 15.315 h |
| September, selected | 15.5°C9.7°C | 9.7°C | 83 | 12.6 | 12.913 h |
| October | 9.8°C5.4°C | 5.4°C | 81 | 13.3 | 10.410 h |
| November | 5.0°C1.7°C | 1.7°C | 63 | 11.8 | 8.08 h |
| December | 1.9°C-1.5°C | -1.5°C | 75 | 12.7 | 6.77 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Gothenburg in SeptemberSweden · 58 kmHigh 16.2°C · Low 10.6°C · 93 mm rain
- Jönköping in SeptemberSweden · 72 kmHigh 15.6°C · Low 10.2°C · 62 mm rain
- Halmstad in SeptemberSweden · 116 kmHigh 16.4°C · Low 10.5°C · 76 mm rain
- Växjö in SeptemberSweden · 146 kmHigh 15.5°C · Low 9.5°C · 59 mm rain
- Linköping in SeptemberSweden · 175 kmHigh 15.9°C · Low 9.6°C · 53 mm rain
- Helsingborg in SeptemberSweden · 187 kmHigh 16.7°C · Low 10.8°C · 62 mm rain
- Aalborg in SeptemberDenmark · 196 kmHigh 16.3°C · Low 11.2°C · 61 mm rain
- Fredrikstad in SeptemberNorway · 203 kmHigh 15.6°C · Low 10.6°C · 81 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 Borås) is explained once on the Borås year overview and on the Sources, method and limits page.