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Pärnu, Estonia climate
Dsb Mediterranean-influenced warm-summer humid continental
Pärnu has a seasonal cool-temperate climate (Mediterranean-influenced warm-summer humid continental, Köppen Dsb). The hottest month is July with an average daily high near 23°C, while the coldest is February averaging around −6°C at night. Precipitation totals about 803 mm a year and is strongly seasonal — November alone averages 140 mm while July barely receives 32 mm. At latitude 58°N, day length swings from 6.1 hours in midwinter to 17.9 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 figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Pärnu climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | −1 | 3 | 10 | 16 | 20 | 23 | 22 | 16 | 10 | 5 | 1 |
| Avg temp (°C) | −3 | −4 | 0 | 6 | 11 | 16 | 19 | 18 | 13 | 8 | 3 | 0 |
| Avg low (°C) | −5 | −6 | −3 | 2 | 7 | 12 | 15 | 15 | 10 | 6 | 1 | −2 |
| Precipitation (mm) | 63 | 71 | 45 | 49 | 50 | 68 | 32 | 59 | 56 | 100 | 140 | 70 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −1 | −1 | 3 | 10 | 16 | 20 |
| Avg temp (°C) | −3 | −4 | 0 | 6 | 11 | 16 |
| Avg low (°C) | −5 | −6 | −3 | 2 | 7 | 12 |
| Precipitation (mm) | 63 | 71 | 45 | 49 | 50 | 68 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 23 | 22 | 16 | 10 | 5 | 1 |
| Avg temp (°C) | 19 | 18 | 13 | 8 | 3 | 0 |
| Avg low (°C) | 15 | 15 | 10 | 6 | 1 | −2 |
| Precipitation (mm) | 32 | 59 | 56 | 100 | 140 | 70 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 12 | 10 | 8 | 6 | 7 | 6 | 6 | 7 | 10 | 10 | 13 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | — | 0.2 | — | — | — | — | — |
| Days with low ≤ 0°C (days) | 13 | 17 | 19 | 10 | 1 | — | — | — | 0.4 | 5 | 10 | 12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 12 | 10 | 8 | 6 | 7 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | — |
| Days with low ≤ 0°C (days) | 13 | 17 | 19 | 10 | 1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 6 | 7 | 10 | 10 | 13 |
| Days with high ≥ 32°C (days) | 0.2 | — | — | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.4 | 5 | 10 | 12 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 70 | 64 | 63 | 58 | 63 | 61 | 62 | 67 | 72 | 76 | 77 |
| Relative humidity (%) | 95 | 95 | 92 | 85 | 79 | 78 | 76 | 77 | 82 | 88 | 93 | 95 |
| Wind speed (m/s) | 4.4 | 4.1 | 3.8 | 3.3 | 3.1 | 3.1 | 3.0 | 3.1 | 3.5 | 3.8 | 4.0 | 4.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 70 | 64 | 63 | 58 | 63 |
| Relative humidity (%) | 95 | 95 | 92 | 85 | 79 | 78 |
| Wind speed (m/s) | 4.4 | 4.1 | 3.8 | 3.3 | 3.1 | 3.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 62 | 67 | 72 | 76 | 77 |
| Relative humidity (%) | 76 | 77 | 82 | 88 | 93 | 95 |
| Wind speed (m/s) | 3.0 | 3.1 | 3.5 | 3.8 | 4.0 | 4.3 |
Methodology & sources
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 2 years of daily observations at Pjarnu, a weather station, about 2 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.