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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 72°F, while the coldest is January averaging around 31°F at night. Around 35 inches of precipitation falls each year, peaking in July (3.7 inches) and easing off in April (1.6 inches). 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 (°F) | 39 | 40 | 46 | 55 | 62 | 67 | 72 | 71 | 64 | 55 | 46 | 40 |
| Avg temp (°F) | 35 | 35 | 40 | 47 | 54 | 59 | 63 | 63 | 57 | 50 | 42 | 37 |
| Avg low (°F) | 31 | 31 | 34 | 39 | 45 | 51 | 55 | 55 | 50 | 44 | 38 | 33 |
| Precipitation (in) | 3.2 | 2.4 | 2.3 | 1.6 | 2.2 | 3.0 | 3.7 | 3.6 | 3.2 | 3.5 | 3.0 | 3.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 39 | 40 | 46 | 55 | 62 | 67 |
| Avg temp (°F) | 35 | 35 | 40 | 47 | 54 | 59 |
| Avg low (°F) | 31 | 31 | 34 | 39 | 45 | 51 |
| Precipitation (in) | 3.2 | 2.4 | 2.3 | 1.6 | 2.2 | 3.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 72 | 71 | 64 | 55 | 46 | 40 |
| Avg temp (°F) | 63 | 63 | 57 | 50 | 42 | 37 |
| Avg low (°F) | 55 | 55 | 50 | 44 | 38 | 33 |
| Precipitation (in) | 3.7 | 3.6 | 3.2 | 3.5 | 3.0 | 3.4 |
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 ≥ 90°F (days) | — | — | — | — | — | 0.0 | 0.3 | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (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 ≥ 90°F (days) | — | — | — | — | — | 0.0 |
| Days with low ≤ 32°F (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 ≥ 90°F (days) | 0.3 | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (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 (mph) | 10.0 | 9.8 | 9.4 | 8.0 | 7.8 | 7.9 | 7.5 | 7.4 | 8.1 | 8.7 | 8.8 | 9.3 |
| 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 (mph) | 10.0 | 9.8 | 9.4 | 8.0 | 7.8 | 7.9 |
| 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 (mph) | 7.5 | 7.4 | 8.1 | 8.7 | 8.8 | 9.3 |
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.