Climate averages 1991–2020
Aalborg weather
in September.
A mild, moderately wet month: the 4th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Aalborg: daytime highs average 16.3°C and nights cool to about 11.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 61 mm of rain on roughly 11 days, which makes September a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 51 min on an average September day.
The nearest other city in this atlas is Århus (101 km away). In September its highs average 16.6°C, about as warm as Aalborg, with 54 mm of rain.
Among the 5 cities listed in Denmark, Aalborg ranks joint 4th of 5 for the warmest September highs and 4th of 5 for the driest September (rainfall, lowest first). The mean September high of those 5 cities is 16.6°C; Aalborg is 0.3°C cooler than that mean.
From September to October, average highs fall by 4.7°C to 11.6°C, and monthly rainfall rises from 61 mm to 71 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
Aalborg climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.4°C-0.2°C | -0.2°C | 57 | 11.5 | 7.57 h |
| February | 3.6°C-0.4°C | -0.4°C | 44 | 9.4 | 9.49 h |
| March | 6.1°C0.7°C | 0.7°C | 44 | 10.3 | 11.812 h |
| April | 10.8°C3.8°C | 3.8°C | 46 | 10.0 | 14.214 h |
| May | 15.0°C7.7°C | 7.7°C | 62 | 10.9 | 16.516 h |
| June | 18.1°C11.2°C | 11.2°C | 77 | 11.6 | 17.818 h |
| July | 20.4°C13.6°C | 13.6°C | 72 | 11.6 | 17.217 h |
| August | 20.0°C13.9°C | 13.9°C | 79 | 12.6 | 15.215 h |
| September, selected | 16.3°C11.2°C | 11.2°C | 61 | 10.8 | 12.913 h |
| October | 11.6°C7.4°C | 7.4°C | 71 | 12.0 | 10.410 h |
| November | 7.2°C3.8°C | 3.8°C | 54 | 11.0 | 8.28 h |
| December | 4.3°C1.0°C | 1.0°C | 54 | 11.4 | 6.87 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
- Århus in SeptemberDenmark · 101 kmHigh 16.6°C · Low 11.2°C · 54 mm rain
- Gothenburg in SeptemberSweden · 143 kmHigh 16.2°C · Low 10.6°C · 93 mm rain
- Kristiansand in SeptemberNorway · 167 kmHigh 15.4°C · Low 10.7°C · 127 mm rain
- Halmstad in SeptemberSweden · 183 kmHigh 16.4°C · Low 10.5°C · 76 mm rain
- Odense in SeptemberDenmark · 186 kmHigh 17.2°C · Low 11.4°C · 51 mm rain
- Borås in SeptemberSweden · 196 kmHigh 15.5°C · Low 9.7°C · 83 mm rain
- Esbjerg in SeptemberDenmark · 197 kmHigh 16.3°C · Low 12.3°C · 85 mm rain
- Helsingborg in SeptemberSweden · 203 kmHigh 16.7°C · Low 10.8°C · 62 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 Aalborg) is explained once on the Aalborg year overview and on the Sources, method and limits page.