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Coimbra, Portugal climate
Csa Hot-summer Mediterranean
Coimbra has a mildly seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 29°C, while the coldest is January averaging around 5°C at night. Precipitation totals about 891 mm a year and is strongly seasonal — October alone averages 128 mm while July barely receives 10 mm.
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 countsCoimbra climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 16 | 19 | 20 | 23 | 26 | 28 | 29 | 27 | 22 | 18 | 15 |
| Avg temp (°C) | 10 | 11 | 14 | 15 | 17 | 20 | 22 | 22 | 20 | 17 | 13 | 11 |
| Avg low (°C) | 5 | 6 | 8 | 9 | 12 | 14 | 16 | 16 | 14 | 12 | 8 | 6 |
| Precipitation (mm) | 115 | 77 | 69 | 79 | 70 | 25 | 10 | 16 | 61 | 128 | 123 | 119 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 16 | 19 | 20 | 23 | 26 |
| Avg temp (°C) | 10 | 11 | 14 | 15 | 17 | 20 |
| Avg low (°C) | 5 | 6 | 8 | 9 | 12 | 14 |
| Precipitation (mm) | 115 | 77 | 69 | 79 | 70 | 25 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 29 | 27 | 22 | 18 | 15 |
| Avg temp (°C) | 22 | 22 | 20 | 17 | 13 | 11 |
| Avg low (°C) | 16 | 16 | 14 | 12 | 8 | 6 |
| Precipitation (mm) | 10 | 16 | 61 | 128 | 123 | 119 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 11 | 13 | 11 | 6 | 3 | 4 | 8 | 14 | 13 | 14 |
| Days with high ≥ 32°C (days) | — | — | — | 0.3 | 2 | 4 | 6 | 7 | 3 | 0.3 | — | — |
| Days with low ≤ 0°C (days) | 3 | 1 | 0.3 | — | — | — | — | — | — | — | 0.4 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 11 | 13 | 11 | 6 |
| Days with high ≥ 32°C (days) | — | — | — | 0.3 | 2 | 4 |
| Days with low ≤ 0°C (days) | 3 | 1 | 0.3 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 4 | 8 | 14 | 13 | 14 |
| Days with high ≥ 32°C (days) | 6 | 7 | 3 | 0.3 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | — | 0.4 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 52 | 52 | 55 | 51 | 44 | 35 | 34 | 41 | 51 | 54 | 57 |
| Clear days (≤ 30% cloud) | 9 | 9 | 10 | 8 | 9 | 11 | 16 | 17 | 13 | 10 | 8 | 7 |
| Partly cloudy days (30–70%) | 10 | 9 | 10 | 10 | 11 | 12 | 11 | 11 | 11 | 10 | 10 | 11 |
| Cloudy days (≥ 70%) | 12 | 10 | 11 | 12 | 10 | 6 | 4 | 4 | 6 | 11 | 12 | 13 |
| Relative humidity (%) | 88 | 84 | 79 | 77 | 73 | 65 | 56 | 54 | 61 | 73 | 85 | 88 |
| Wind speed (km/h) | 1.8 | 1.8 | 1.9 | 1.9 | 1.8 | 1.8 | 1.9 | 1.9 | 1.8 | 1.8 | 1.8 | 1.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 52 | 52 | 55 | 51 | 44 |
| Clear days (≤ 30% cloud) | 9 | 9 | 10 | 8 | 9 | 11 |
| Partly cloudy days (30–70%) | 10 | 9 | 10 | 10 | 11 | 12 |
| Cloudy days (≥ 70%) | 12 | 10 | 11 | 12 | 10 | 6 |
| Relative humidity (%) | 88 | 84 | 79 | 77 | 73 | 65 |
| Wind speed (km/h) | 1.8 | 1.8 | 1.9 | 1.9 | 1.8 | 1.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 34 | 41 | 51 | 54 | 57 |
| Clear days (≤ 30% cloud) | 16 | 17 | 13 | 10 | 8 | 7 |
| Partly cloudy days (30–70%) | 11 | 11 | 11 | 10 | 10 | 11 |
| Cloudy days (≥ 70%) | 4 | 4 | 6 | 11 | 12 | 13 |
| Relative humidity (%) | 56 | 54 | 61 | 73 | 85 | 88 |
| Wind speed (km/h) | 1.9 | 1.9 | 1.8 | 1.8 | 1.8 | 1.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 20 years of daily observations at Coimbra, a weather station, inside the city. 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.