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Flensburg, Schleswig-Holstein climate
Cfb Oceanic / temperate
Flensburg has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 22°C, while the coldest is January averaging around −1°C at night. Around 890 mm of precipitation falls each year, peaking in July (93 mm) and easing off in April (42 mm). At latitude 55°N, day length swings from 7.0 hours in midwinter to 17.0 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsFlensburg climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 4 | 8 | 13 | 17 | 20 | 22 | 22 | 18 | 13 | 8 | 5 |
| Avg temp (°C) | 2 | 2 | 4 | 8 | 12 | 15 | 17 | 17 | 14 | 10 | 5 | 3 |
| Avg low (°C) | −1 | −1 | 1 | 4 | 7 | 11 | 13 | 13 | 10 | 7 | 3 | 1 |
| Precipitation (mm) | 81 | 61 | 58 | 42 | 56 | 76 | 93 | 90 | 81 | 90 | 75 | 86 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 4 | 8 | 13 | 17 | 20 |
| Avg temp (°C) | 2 | 2 | 4 | 8 | 12 | 15 |
| Avg low (°C) | −1 | −1 | 1 | 4 | 7 | 11 |
| Precipitation (mm) | 81 | 61 | 58 | 42 | 56 | 76 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 18 | 13 | 8 | 5 |
| Avg temp (°C) | 17 | 17 | 14 | 10 | 5 | 3 |
| Avg low (°C) | 13 | 13 | 10 | 7 | 3 | 1 |
| Precipitation (mm) | 93 | 90 | 81 | 90 | 75 | 86 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 15 | 12 | 13 | 14 | 14 | 15 | 15 | 17 | 18 | 18 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.0 | 0.3 | 0.1 | — | — | — | — |
| Days with low ≤ 0°C (days) | 16 | 15 | 12 | 4 | 0.2 | — | — | — | — | 2 | 7 | 13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 15 | 12 | 13 | 14 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.0 |
| Days with low ≤ 0°C (days) | 16 | 15 | 12 | 4 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 15 | 15 | 17 | 18 | 18 |
| Days with high ≥ 32°C (days) | 0.3 | 0.1 | — | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 2 | 7 | 13 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 77 | 74 | 68 | 67 | 71 | 69 | 70 | 73 | 76 | 81 | 80 |
| Clear days (≤ 30% cloud) | 2 | 1 | 2 | 4 | 5 | 3 | 4 | 3 | 3 | 2 | 0.8 | 2 |
| Partly cloudy days (30–70%) | 7 | 7 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 6 | 6 |
| Cloudy days (≥ 70%) | 22 | 20 | 20 | 17 | 18 | 19 | 19 | 19 | 20 | 21 | 23 | 23 |
| Relative humidity (%) | 94 | 92 | 88 | 83 | 80 | 80 | 81 | 82 | 84 | 88 | 93 | 94 |
| Wind speed (km/h) | 16.2 | 15.8 | 15.1 | 12.8 | 12.5 | 12.7 | 12.1 | 12.0 | 13.0 | 14.1 | 14.2 | 14.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 77 | 74 | 68 | 67 | 71 |
| Clear days (≤ 30% cloud) | 2 | 1 | 2 | 4 | 5 | 3 |
| Partly cloudy days (30–70%) | 7 | 7 | 9 | 9 | 9 | 9 |
| Cloudy days (≥ 70%) | 22 | 20 | 20 | 17 | 18 | 19 |
| Relative humidity (%) | 94 | 92 | 88 | 83 | 80 | 80 |
| Wind speed (km/h) | 16.2 | 15.8 | 15.1 | 12.8 | 12.5 | 12.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 70 | 73 | 76 | 81 | 80 |
| Clear days (≤ 30% cloud) | 4 | 3 | 3 | 2 | 0.8 | 2 |
| Partly cloudy days (30–70%) | 9 | 9 | 8 | 8 | 6 | 6 |
| Cloudy days (≥ 70%) | 19 | 19 | 20 | 21 | 23 | 23 |
| Relative humidity (%) | 81 | 82 | 84 | 88 | 93 | 94 |
| Wind speed (km/h) | 12.1 | 12.0 | 13.0 | 14.1 | 14.2 | 14.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Schleswig, a weather station, about 30 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.