Climate averages 1991–2020
Flensburg weather
in April.
A cool, moderately wet month: the 7th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Flensburg: daytime highs average 11.7°C and nights cool to about 3.9°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 43 mm of rain on roughly 10 days, which makes April a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 03 min on an average April day.
The nearest other city in this atlas is Kiel (69 km away). In April its highs average 12.1°C, about as warm as Flensburg, with 43 mm of rain.
Among the 120 cities listed in Germany, Flensburg ranks 120th of 120 for the warmest April highs and joint 12th of 120 for the driest April (rainfall, lowest first). The mean April high of those 120 cities is 14.0°C; Flensburg is 2.3°C cooler than that mean.
From April to May, average highs rise by 4.1°C to 15.7°C, and monthly rainfall rises from 43 mm to 55 mm.
The annual picture
April 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
Flensburg climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.7°C-0.2°C | -0.2°C | 64 | 12.7 | 7.98 h |
| February | 4.2°C-0.3°C | -0.3°C | 50 | 10.5 | 9.610 h |
| March | 7.0°C0.9°C | 0.9°C | 50 | 10.7 | 11.812 h |
| April, selected | 11.7°C3.9°C | 3.9°C | 43 | 9.6 | 14.114 h |
| May | 15.7°C7.9°C | 7.9°C | 55 | 10.6 | 16.116 h |
| June | 18.6°C11.2°C | 11.2°C | 68 | 11.5 | 17.217 h |
| July | 20.8°C13.6°C | 13.6°C | 74 | 12.3 | 16.717 h |
| August | 20.6°C13.8°C | 13.8°C | 76 | 12.8 | 15.015 h |
| September | 17.0°C11.3°C | 11.3°C | 63 | 11.0 | 12.813 h |
| October | 12.4°C7.5°C | 7.5°C | 65 | 12.6 | 10.611 h |
| November | 7.6°C3.7°C | 3.7°C | 57 | 11.8 | 8.59 h |
| December | 4.6°C1.0°C | 1.0°C | 63 | 12.6 | 7.37 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
April in nearby cities
- Kiel in AprilGermany · 69 kmHigh 12.1°C · Low 4.4°C · 43 mm rain
- Neumünster in AprilGermany · 87 kmHigh 12.5°C · Low 4.2°C · 45 mm rain
- Odense in AprilDenmark · 91 kmHigh 11.5°C · Low 3.9°C · 42 mm rain
- Esbjerg in AprilDenmark · 98 kmHigh 10.3°C · Low 4.6°C · 42 mm rain
- Norderstedt in AprilGermany · 126 kmHigh 12.9°C · Low 4.4°C · 45 mm rain
- Lübeck in AprilGermany · 130 kmHigh 12.7°C · Low 4.4°C · 44 mm rain
- Hamburg in AprilGermany · 142 kmHigh 13.3°C · Low 4.3°C · 47 mm rain
- Bremerhaven in AprilGermany · 148 kmHigh 12.4°C · Low 5.6°C · 52 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 Flensburg) is explained once on the Flensburg year overview and on the Sources, method and limits page.