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Nyköping, Sweden climate
Cfb Oceanic / temperate
Nyköping has a seasonal cold-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 74°F, while the coldest is January averaging around 23°F at night. Around 21 inches of precipitation falls each year, peaking in August (2.8 inches) and easing off in March (0.9 inches). At latitude 59°N, day length swings from 5.8 hours in midwinter to 18.2 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 countsNyköping climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 34 | 41 | 52 | 62 | 69 | 74 | 71 | 62 | 50 | 41 | 35 |
| Avg temp (°F) | 28 | 29 | 34 | 42 | 51 | 59 | 63 | 61 | 54 | 43 | 37 | 30 |
| Avg low (°F) | 23 | 23 | 27 | 32 | 41 | 48 | 53 | 51 | 45 | 37 | 32 | 25 |
| Precipitation (in) | 1.4 | 1.1 | 0.9 | 1.0 | 1.5 | 2.4 | 2.3 | 2.8 | 1.7 | 2.2 | 1.6 | 1.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 34 | 41 | 52 | 62 | 69 |
| Avg temp (°F) | 28 | 29 | 34 | 42 | 51 | 59 |
| Avg low (°F) | 23 | 23 | 27 | 32 | 41 | 48 |
| Precipitation (in) | 1.4 | 1.1 | 0.9 | 1.0 | 1.5 | 2.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 74 | 71 | 62 | 50 | 41 | 35 |
| Avg temp (°F) | 63 | 61 | 54 | 43 | 37 | 30 |
| Avg low (°F) | 53 | 51 | 45 | 37 | 32 | 25 |
| Precipitation (in) | 2.3 | 2.8 | 1.7 | 2.2 | 1.6 | 1.6 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 6 | 5 | 4 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 9 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | — | 0.2 | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (days) | 23 | 21 | 21 | 13 | 4 | 0.3 | — | — | 2 | 9 | 14 | 20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 6 | 5 | 4 | 6 | 6 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | — |
| Days with low ≤ 32°F (days) | 23 | 21 | 21 | 13 | 4 | 0.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 6 | 6 | 7 | 8 | 9 |
| Days with high ≥ 90°F (days) | 0.2 | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (days) | — | — | 2 | 9 | 14 | 20 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 74 | 70 | 68 | 67 | 68 | 66 | 68 | 70 | 75 | 74 | 76 |
| Clear days (≤ 30% cloud) | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 2 | 2 |
| Partly cloudy days (30–70%) | 7 | 8 | 11 | 11 | 11 | 11 | 12 | 12 | 11 | 10 | 8 | 8 |
| Cloudy days (≥ 70%) | 22 | 18 | 17 | 16 | 17 | 16 | 16 | 16 | 17 | 20 | 19 | 21 |
| Relative humidity (%) | 97 | 96 | 90 | 82 | 77 | 75 | 75 | 78 | 83 | 91 | 96 | 98 |
| Wind speed (mph) | 0.9 | 0.9 | 1.3 | 1.6 | 1.6 | 1.7 | 1.6 | 1.6 | 1.7 | 1.5 | 1.1 | 0.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 77 | 74 | 70 | 68 | 67 | 68 |
| Clear days (≤ 30% cloud) | 2 | 2 | 3 | 3 | 3 | 3 |
| Partly cloudy days (30–70%) | 7 | 8 | 11 | 11 | 11 | 11 |
| Cloudy days (≥ 70%) | 22 | 18 | 17 | 16 | 17 | 16 |
| Relative humidity (%) | 97 | 96 | 90 | 82 | 77 | 75 |
| Wind speed (mph) | 0.9 | 0.9 | 1.3 | 1.6 | 1.6 | 1.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 68 | 70 | 75 | 74 | 76 |
| Clear days (≤ 30% cloud) | 3 | 2 | 2 | 1 | 2 | 2 |
| Partly cloudy days (30–70%) | 12 | 12 | 11 | 10 | 8 | 8 |
| Cloudy days (≥ 70%) | 16 | 16 | 17 | 20 | 19 | 21 |
| Relative humidity (%) | 75 | 78 | 83 | 91 | 96 | 98 |
| Wind speed (mph) | 1.6 | 1.6 | 1.7 | 1.5 | 1.1 | 0.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Eskilstuna_mo, a weather station, about 77 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.