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Greenock, Scotland climate
Cfb Oceanic / temperate
Greenock has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 19°C, while the coldest is December averaging around 1°C at night. Around 2595 mm of precipitation falls each year, peaking in January (321 mm) and easing off in June (132 mm). At latitude 56°N, day length swings from 6.7 hours in midwinter to 17.3 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 countsGreenock climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 9 | 12 | 15 | 17 | 19 | 18 | 16 | 13 | 10 | 7 |
| Avg temp (°C) | 4 | 5 | 6 | 8 | 11 | 13 | 15 | 15 | 13 | 9 | 7 | 4 |
| Avg low (°C) | 2 | 2 | 3 | 4 | 6 | 9 | 11 | 11 | 9 | 6 | 4 | 1 |
| Precipitation (mm) | 321 | 245 | 224 | 143 | 132 | 132 | 152 | 186 | 198 | 269 | 281 | 311 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 8 | 9 | 12 | 15 | 17 |
| Avg temp (°C) | 4 | 5 | 6 | 8 | 11 | 13 |
| Avg low (°C) | 2 | 2 | 3 | 4 | 6 | 9 |
| Precipitation (mm) | 321 | 245 | 224 | 143 | 132 | 132 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 19 | 18 | 16 | 13 | 10 | 7 |
| Avg temp (°C) | 15 | 15 | 13 | 9 | 7 | 4 |
| Avg low (°C) | 11 | 11 | 9 | 6 | 4 | 1 |
| Precipitation (mm) | 152 | 186 | 198 | 269 | 281 | 311 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 24 | 22 | 22 | 19 | 18 | 19 | 21 | 21 | 20 | 23 | 24 | 24 |
| Days with low ≤ 0°C (days) | 11 | 10 | 8 | 4 | 2 | 0.0 | — | — | 0.2 | 2 | 6 | 11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 24 | 22 | 22 | 19 | 18 | 19 |
| Days with low ≤ 0°C (days) | 11 | 10 | 8 | 4 | 2 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 21 | 21 | 20 | 23 | 24 | 24 |
| Days with low ≤ 0°C (days) | — | — | 0.2 | 2 | 6 | 11 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 79 | 79 | 77 | 75 | 82 | 82 | 81 | 78 | 78 | 80 | 78 |
| Clear days (≤ 30% cloud) | 1 | 1.0 | 0.9 | 2 | 3 | 1 | 1 | 0.9 | 2 | 1 | 0.8 | 2 |
| Partly cloudy days (30–70%) | 7 | 6 | 8 | 6 | 7 | 5 | 5 | 6 | 6 | 7 | 7 | 6 |
| Cloudy days (≥ 70%) | 23 | 21 | 22 | 22 | 21 | 24 | 25 | 25 | 22 | 22 | 22 | 23 |
| Relative humidity (%) | 93 | 92 | 90 | 87 | 84 | 84 | 86 | 87 | 89 | 91 | 92 | 93 |
| Wind speed (m/s) | 5.2 | 5.1 | 4.8 | 4.2 | 3.9 | 3.6 | 3.4 | 3.5 | 4.0 | 4.4 | 4.6 | 4.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 79 | 79 | 77 | 75 | 82 |
| Clear days (≤ 30% cloud) | 1 | 1.0 | 0.9 | 2 | 3 | 1 |
| Partly cloudy days (30–70%) | 7 | 6 | 8 | 6 | 7 | 5 |
| Cloudy days (≥ 70%) | 23 | 21 | 22 | 22 | 21 | 24 |
| Relative humidity (%) | 93 | 92 | 90 | 87 | 84 | 84 |
| Wind speed (m/s) | 5.2 | 5.1 | 4.8 | 4.2 | 3.9 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 82 | 81 | 78 | 78 | 80 | 78 |
| Clear days (≤ 30% cloud) | 1 | 0.9 | 2 | 1 | 0.8 | 2 |
| Partly cloudy days (30–70%) | 5 | 6 | 6 | 7 | 7 | 6 |
| Cloudy days (≥ 70%) | 25 | 25 | 22 | 22 | 22 | 23 |
| Relative humidity (%) | 86 | 87 | 89 | 91 | 92 | 93 |
| Wind speed (m/s) | 3.4 | 3.5 | 4.0 | 4.4 | 4.6 | 4.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Benmore: Younger Botanic Garde, a weather station, about 17 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.